Document:

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                          CREDIT ENHANCEMENT AGREEMENT

                                      AMONG

                         U.S. BANK NATIONAL ASSOCIATION

                                   AS TRUSTEE,

                                  DISCOVER BANK

                     AS MASTER SERVICER, SERVICER AND SELLER

                                       AND

                   DISCOVER RECEIVABLES FINANCING CORPORATION

                         AS CREDIT ENHANCEMENT PROVIDER

                                   ----------

                          DATED AS OF DECEMBER 19, 2000

                                   ----------

                          DISCOVER CARD MASTER TRUST I

                                  SERIES 2000-9

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                                TABLE OF CONTENTS

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Section 1. Defined Terms...............................................................................1

Section 2. Loan........................................................................................2

Section 3. Calculation of Amount of Interest Payable on the Loan.......................................3

Section 4. Payment of Interest on the Loan.............................................................3

Section 5. Repayment of Principal of the Loan..........................................................3

Section 6. Payments to the Holder of the Seller Certificate and the Master Servicer....................4

Section 7. Deposits to and Withdrawals from the Credit Enhancement Account.............................5

Section 8. Certain Additional Loans....................................................................5

Section 9. Limited Obligation; Waiver of Setoff; Obligations Absolute..................................6

Section 10. Investments and Information................................................................7

Section 11. Servicing Transfer.........................................................................7

Section 12. Representations and Warranties.............................................................7

Section 13. Covenants..................................................................................9

Section 14. Governing Law..............................................................................9

Section 15. Termination................................................................................9

Section 16. Notices...................................................................................10

Section 17. Bankruptcy................................................................................10

Section 18. Limitation of Remedies....................................................................11

Section 19. No Petition...............................................................................11

Section 20. Amendments................................................................................11

Section 21. Successors and Assigns; Replacement of Credit Enhancement Provider........................11

Section 22. Participation.............................................................................12
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         CREDIT ENHANCEMENT AGREEMENT, dated as of December 19, 2000, among U.S.
BANK NATIONAL ASSOCIATION (formerly First Bank National Association, successor
trustee to Bank of America Illinois, formerly Continental Bank, National
Association) as trustee (together with its successors and assigns as trustee,
the "Trustee") for Discover Card Master Trust I (the "Trust"), DISCOVER BANK
(formerly Greenwood Trust Company) ("Discover Bank") as Master Servicer,
Servicer and Seller with respect to the Trust and DISCOVER RECEIVABLES FINANCING
CORPORATION as cash collateral depositor (the "Credit Enhancement Provider").

                                   WITNESSETH

         WHEREAS, Discover Bank as Master Servicer, Servicer and Seller and the
Trustee have entered into a Pooling and Servicing Agreement, dated as of October
1, 1993 (as the same may from time to time be amended, modified or otherwise
supplemented, the "Pooling and Servicing Agreement"), and that certain Series
Supplement, dated as of December 19, 2000 (as the same may from time to time be
amended, modified or otherwise supplemented, the "Series Supplement");

         WHEREAS, the Trust, pursuant to the Pooling and Servicing Agreement and
the Series Supplement, is issuing $526,316,000 in aggregate principal amount of
Investor Certificates of Discover Card Master Trust I, Series 2000-9 (the
"Series"), which will entitle the holders thereof to interest during the
Revolving Period, the Accumulation Period, and the Amortization Period, if any,
and principal on the Class A Expected Final Payment Date, the Class B Expected
Final Payment Date and during the Amortization Period, if any;

         WHEREAS, the principal and interest payments on the Investor
Certificates are to be funded by Principal Collections and Finance Charge
Collections received by the Trust on the Receivables; and

         WHEREAS, it is a condition to the issuance of the Investor Certificates
that at the closing on the date hereof, the Credit Enhancement Provider make a
term loan (the "Loan") to the Trust, for the benefit of the Investor
Certificateholders of the Series, of $28,947,380 (5.5% of the Series Initial
Investor Interest), for deposit in the Credit Enhancement Account to provide
additional funds to make payments on the Investor Certificates under certain
circumstances.

         NOW, THEREFORE, in consideration of the mutual covenants herein
contained, and other good and valuable consideration, the receipt and adequacy
of which are hereby expressly acknowledged, the parties hereto agree as follows:

         SECTION 1. DEFINED TERMS.

         (a) The capitalized terms used herein and not otherwise defined herein
shall have the meanings assigned to them in the Pooling and Servicing Agreement
or the Series Supplement, as applicable.

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         (b) The following terms have the definitions set forth below:

         "Interest Period" means (i) with respect to the initial Distribution
Date, the period commencing on the Series Closing Date and ending on the day
immediately preceding the initial Distribution Date and (ii) with respect to
each subsequent Distribution Date, the period commencing on the preceding
Distribution Date and ending on the day immediately preceding such Distribution
Date.

         "Lender Rate" means, with respect to each Interest Period, the prime
commercial lending rate per annum established by the Trustee, as in effect on
each day in the Interest Period.

         "LIBOR-Based Rate" means, with respect to each Interest Period, the per
annum interest rate equal to the London Interbank Offered Rate which appears on
Telerate Page 3750 at approximately 11:00 a.m. (London time) two LIBOR Business
Days prior to the first day of such Interest Period for deposits of United
States dollars for a period of time comparable to the Interest Period, and in an
amount comparable to the principal amount of the Loan, plus 0.75%.

         "Portfolio Yield" means, with respect to any Due Period, the annualized
percentage equivalent of a fraction, the numerator of which shall be the sum of
(i) the amount of Finance Charge Collections received during such Due Period,
(ii) the amount of Series Yield Collections for each Series then outstanding for
such Due Period and (iii) the amount of Series Additional Funds for each Series
then outstanding for such Due Period, and the denominator of which shall be the
total amount of Principal Receivables in the Trust as of the first day of such
Due Period.

         "Provider Amount" means, with respect to each Distribution Date, the
lesser of (i) the unpaid principal amount of the Loan (including any amounts
loaned by the Credit Enhancement Provider pursuant to Section 8 hereof) and (ii)
the amount on deposit in the Credit Enhancement Account, in each case before
giving effect to any payments, allocations or distributions on such Distribution
Date.

         "Series Interest Payment Amount" means, for any Distribution Date, an
amount equal to the amount of interest payable on the Loan on such Distribution
Date, including any accrued but unpaid interest with respect to previous
Interest Periods and interest thereon, less the amount paid to the Credit
Enhancement Provider on such Distribution Date pursuant to Section 4(a) hereof.
The Series Interest Payment Amount shall be the amount of interest payable
pursuant to this Agreement for purposes of calculating the "Credit Enhancement
Fee" for the purpose of, and as such term is defined in, the Series Supplement
and such amount shall be paid in accordance with the provisions of the Series
Supplement.

         SECTION 2. LOAN. The Credit Enhancement Provider hereby makes a term
loan to the Trust, for the benefit of the Investor Certificateholders of the
Series, on the Series Closing Date in an amount equal to $28,947,380, receipt of
which is hereby acknowledged by the Trustee. The amount of such Loan shall be
increased by the amount of any additional loan made by the Credit Enhancement
Provider pursuant to Section 8 hereof.

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         SECTION 3. CALCULATION OF AMOUNT OF INTEREST PAYABLE ON THE LOAN.

         (a) The Loan shall bear interest for each day during each Interest
Period with respect thereto at a rate per annum determined for such day as
follows. To the extent the unpaid portion of the principal of the Loan during
such Interest Period equals or is less than the amount on deposit in the Credit
Enhancement Account, the rate for such Interest Period on such principal portion
shall be the LIBOR-Based Rate. To the extent any portion of the unpaid principal
of the Loan exceeds such amount on deposit, the rate for such Interest Period on
such principal portion shall be the Lender Rate.

         (b) Interest shall be payable monthly in arrears on each Distribution
Date. Interest on the Loan shall be calculated on the basis of the actual number
of days elapsed during the applicable Interest Period divided by (i) 360, to the
extent the LIBOR-Based Rate is applicable, or (ii) 365 or 366, as the case may
be, to the extent the Lender Rate is applicable. The Trustee shall, as soon as
practicable, notify the Seller, the Master Servicer and the Credit Enhancement
Provider of each determination of the Lender Rate and of the LIBOR-Based Rate.
Each determination thereof by the Trustee pursuant to the provisions of this
Agreement shall be conclusive and binding on the Seller, the Master Servicer and
the Credit Enhancement Provider, in the absence of manifest error.

         (c) If any portion of interest due and payable on a Distribution Date
is not paid on such Distribution Date, the unpaid portion of such interest shall
be due and payable on the next succeeding Distribution Date. Any interest that
is not paid on the due date thereof shall accrue interest from the Distribution
Date on which such interest was due and payable to the date such interest is
actually paid at a rate per annum equal to the Lender Rate.

         SECTION 4. PAYMENT OF INTEREST ON THE LOAN. On each Distribution Date,
the Trustee as administrator of the Credit Enhancement shall pay or cause to be
paid to the Credit Enhancement Provider the amount of accrued but unpaid
interest on the Loan from the funds and in the order of priority set forth
below; provided, however, that such payments shall not exceed the amount of
accrued but unpaid interest on the Loan and that such payments will be made only
to the extent such funds are available:

         (a) interest and earnings (net of losses and investment expenses)
accrued since the preceding Distribution Date on the Provider Amount; and

         (b) the Series Interest Payment Amount, to the extent such amount has
been paid to the Trustee as administrator of the Credit Enhancement pursuant to
the Series Supplement.

         SECTION 5. REPAYMENT OF PRINCIPAL OF THE LOAN. The principal amount of
the Loan shall be due and payable on the Series Termination Date. The Trust
shall repay the unpaid principal balance of the Loan in full on or before the
Series Termination Date in accordance with the provisions of this Agreement;
provided, however, that the unpaid

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principal amount of the Loan shall only be paid from the funds described below,
and only to the extent such funds are available.

         (a) If, as of any Distribution Date, after giving effect to all other
deposits to and withdrawals from the Credit Enhancement Account as of such
Distribution Date, the amount on deposit in the Credit Enhancement Account
exceeds the Total Maximum Credit Enhancement Amount, (i) the amount of such
excess, up to the amount, if any, by which the amount on deposit in the Credit
Enhancement Account exceeds the unpaid principal amount of the Loan, shall be
withdrawn from the Credit Enhancement Account and paid to Discover Bank on
behalf of the Holder of the Seller Certificate and (ii) the remaining amount of
such excess, if any, after payment of any amounts to be paid to Discover Bank on
behalf of the Holder of the Seller Certificate pursuant to clause (i) of this
Section 5(a), shall be withdrawn from the Credit Enhancement Account and paid to
the Credit Enhancement Provider for application toward the unpaid principal
amount of the Loan.

         (b) On the earlier to occur of (i) the Series Termination Date and (ii)
the day on which the Class Invested Amount with respect to each Class of the
Series is paid in full, and after payment of any amounts to be paid on such day
from the Credit Enhancement Account to or for the benefit of the Investor
Certificateholders of the Series, all amounts remaining on deposit in the Credit
Enhancement Account, up to the amount of the unpaid principal amount of the
Loan, shall be withdrawn from such account and paid to the Credit Enhancement
Provider for application toward the unpaid principal amount of the Loan.

         SECTION 6. PAYMENTS TO THE HOLDER OF THE SELLER CERTIFICATE AND THE
MASTER SERVICER.

         (a) On each Distribution Date, the Trustee as administrator of the
Credit Enhancement shall pay or cause to be paid to Discover Bank on behalf of
the Holder of the Seller Certificate (i) the interest and earnings (net of
losses and investment expenses) accrued since the preceding Distribution Date on
an amount equal to the positive difference, if any, between (x) the amount on
deposit in the Credit Enhancement Account and (y) the Provider Amount and (ii)
the positive difference, if any, between (x) the amount of interest and earnings
(net of losses and investment expenses) accrued since the preceding Distribution
Date on the Provider Amount and (y) the amount paid to the Credit Enhancement
Provider on such Distribution Date pursuant to Section 4(a).

         (b) On each Distribution Date, an amount equal to the amount, if any,
paid to the Trustee as administrator of the Credit Enhancement pursuant to
Section 9(b)(27) of the Series Supplement, shall be paid to Discover Bank on
behalf of the Holder of the Seller Certificate.

         (c) On the earlier to occur of (i) the Series Termination Date and (ii)
the day on which the Class Invested Amount with respect to each Class of the
Series is paid in full, and after payment of any amounts to be paid on such day
from the Credit Enhancement Account to or for the benefit of the Investor
Certificateholders of the Series, any amounts remaining on deposit in the Credit
Enhancement Account that are not paid to the Credit Enhancement Provider

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pursuant to Section 5(b) hereof shall be withdrawn from such account and paid to
Discover Bank on behalf of the Holder of the Seller Certificate.

         SECTION 7. DEPOSITS TO AND WITHDRAWALS FROM THE CREDIT ENHANCEMENT
ACCOUNT.

         (a) The proceeds of the Loan made by the Credit Enhancement Provider to
the Trust pursuant to Section 2 hereof, for the benefit of the Investor
Certificateholders of the Series, on the Series Closing Date and the proceeds of
any additional loan made by the Credit Enhancement Provider pursuant to Section
8 hereof, shall be deposited into the Credit Enhancement Account. In addition,
any amounts paid to the Trustee as administrator of the Credit Enhancement on
any Distribution Date with respect to the Total Available Credit Enhancement
Amount or the Available Class B Credit Enhancement Amount pursuant to the terms
of the Series Supplement also shall be deposited into the Credit Enhancement
Account upon receipt of such funds by the Trustee.

         (b) Any withdrawals from the Credit Enhancement Account for the benefit
of the Investor Certificateholders pursuant to Section 9 of the Series
Supplement may be made by the Master Servicer or by the Trustee as administrator
of the Credit Enhancement and shall be deemed to be made first from amounts on
deposit in the Credit Enhancement Account as a result of payments of Series
Excess Servicing and other amounts to the Trustee as administrator of the Credit
Enhancement to fund the Total Available Credit Enhancement Amount, including any
Series Excess Servicing or other such amounts on deposit in the Credit
Enhancement Account as a result of an Alternative Credit Support Election having
been made or as a result of the occurrence of a Supplemental Credit Enhancement
Event, and only after such amounts are exhausted shall any such withdrawals be
deemed to be made from amounts on deposit in the Credit Enhancement Account that
are attributable to the Loan.

         (c) On or before any Distribution Date on which Discover Bank is the
Master Servicer, all payments made pursuant to this Agreement or the Series
Supplement between the Master Servicer or the Holder of the Seller Certificate
and the Credit Enhancement Account, may be aggregated for such Distribution Date
such that Discover Bank, acting as Master Servicer and as agent of the Holder of
the Seller Certificate, may make only one payment to the Credit Enhancement
Account in satisfaction of all payments of the Master Servicer and the Holder of
the Seller Certificate pursuant to this Agreement or the Series Supplement, to
the extent that all payment obligations of the Master Servicer and the Holder of
the Seller Certificate to the Credit Enhancement Account on such Distribution
Date exceed all payment obligations of the Credit Enhancement Account to the
Master Servicer and the Holder of the Seller Certificate on such Distribution
Date.

         SECTION 8. CERTAIN ADDITIONAL LOANS.

         (a) Alternative Credit Support Election. In the event that an
Alternative Credit Support Election is made pursuant to the provisions of the
Series Supplement, Discover Bank on behalf of the Holder of the Seller
Certificate may cause the Additional Credit Support Amount to be funded by
Series Excess Servicing and other amounts paid to the Trustee as administrator
of

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the Credit Enhancement to fund the Available Class B Credit Enhancement Amount,
pursuant to Section 9 of the Series Supplement, or may request that the Credit
Enhancement Provider make an additional loan in the amount of the Additional
Credit Support Amount. If Discover Bank on behalf of the Holder of the Seller
Certificate makes such request, and if the Credit Enhancement Provider elects to
make such loan, the amount of such loan shall be added to the unpaid principal
amount of the Loan. In the event that the Alternative Credit Support Election
does not become effective, the Additional Credit Support Amount (or, if the
entire amount of the Additional Credit Support Amount is not then on deposit in
the Credit Enhancement Account, the portion of the Additional Credit Support
Amount that is then on deposit) shall be withdrawn from the Credit Enhancement
Account and repaid to Discover Bank on behalf of the Holder of the Seller
Certificate (or, if such amount was loaned by the Credit Enhancement Provider,
returned to the Credit Enhancement Provider).

         (b) Supplemental Credit Enhancement Event. In the event that a
Supplemental Credit Enhancement Event occurs, Discover Bank as Servicer may
cause the Supplemental Credit Enhancement Amount to be funded by Series Excess
Servicing and other amounts paid to the Trustee as administrator of the Credit
Enhancement to fund the Available Class B Credit Enhancement Amount, or may
request that the Credit Enhancement Provider make an additional loan in the
amount of the Supplemental Credit Enhancement Amount. If Discover Bank as
Servicer makes such a request, and if the Credit Enhancement Provider elects to
make such loan, the amount of such loan shall be equal to the Supplemental
Credit Enhancement Amount and shall be added to the unpaid principal amount of
the Loan.

         (c) Notice. The Credit Enhancement Provider shall give prior written
notice to Moody's of the making of any loan by the Credit Enhancement Provider
other than the additional loans described in this Section 8.

         (d) At the time of any additional loan described in this Section 8,
Discover Bank as Servicer and the Credit Enhancement Provider may agree in
writing that the Supplemental Credit Enhancement Amount or the Additional Credit
Support Amount, as applicable, shall bear interest at a different LIBOR-Based
Rate, which rate shall reflect prevailing market conditions and the expected
duration of such additional loan.

         SECTION 9. LIMITED OBLIGATION; WAIVER OF SETOFF; OBLIGATIONS ABSOLUTE.

         (a) Notwithstanding any provision in any other section of this
Agreement to the contrary, the obligation to repay the Loan, together with
interest thereon, shall be without recourse to any Seller, the Master Servicer,
any Servicer, the Trustee, the Trust, any Certificateholder, or any affiliate,
officer, director, employee or person acting on behalf of any of them, and the
obligation to pay such amounts shall be limited solely to the application of
funds pursuant to this Agreement, in the manner and to the extent such funds are
available, except for the direct recourse indemnification obligation of each
successor Master Servicer pursuant to Section 11 hereof. The Credit Enhancement
Provider agrees that its interest in funds on deposit in the Credit Enhancement
Account is subordinated to the interests of the Investor Certificateholders of
the Series, as provided in this Agreement and in the Series Supplement. The

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Credit Enhancement Provider further agrees that it shall have no right of setoff
or lender's lien against any Seller, the Master Servicer, any Servicer, the
Trustee, the Trust, or any Certificateholder.

         (b) The obligations of the Seller, the Trustee, the Credit Enhancement
Provider and the Master Servicer under this Agreement shall be absolute,
unconditional and irrevocable, and shall be performed strictly in accordance
with the terms of this Agreement.

         SECTION 10. INVESTMENTS AND INFORMATION.

         (a) The Trustee shall from time to time during the term of this
Agreement invest all amounts on deposit in the Credit Enhancement Account as the
Master Servicer shall direct, which investments shall at all times be made in
compliance with the terms of the Pooling and Servicing Agreement and the Series
Supplement.

         (b) The Master Servicer shall provide the Credit Enhancement Provider
with such background information and data with respect to the Credit Enhancement
Account as the Credit Enhancement Provider may reasonably request.

         (c) The Master Servicer shall obtain the consent of the Credit
Enhancement Provider prior to the investment in any Permitted Investments with a
stated maturity, the maturity of which is longer than as would cause them to
mature on or prior to the following Distribution Date as provided in Section
8(e) of the Series Supplement.

         SECTION 11. SERVICING TRANSFER. In the event that a successor Master
Servicer is appointed pursuant to the Pooling and Servicing Agreement, from and
after the effective date of such transfer of servicing, the successor Master
Servicer appointed pursuant to the Pooling and Servicing Agreement, and not the
former Master Servicer, shall (a) be responsible for the performance of all
servicing functions to be performed from and after such date, (b) agree to be
bound by the terms, covenants and conditions contained herein applicable to the
Master Servicer and be subject to the duties and obligations of the Master
Servicer hereunder, and (c) agree to indemnify and hold harmless the Credit
Enhancement Provider from and against any and all claims, damages, losses,
liabilities, costs or expenses whatsoever which the Credit Enhancement Provider
may incur (or which may be claimed against the Credit Enhancement Provider) by
reason of the gross negligence or willful misconduct of the successor Master
Servicer in exercising its powers and carrying out its obligations under the
Pooling and Servicing Agreement and the Series Supplement. Such transfer of
servicing shall not affect any rights or obligations of the former Master
Servicer under this Agreement that arose prior to the effective date of the
transfer of servicing, except that such former Master Servicer shall have no
obligation to indemnify the Credit Enhancement Provider as a result of any act
or failure to act of any successor Master Servicer in the performance of the
servicing functions.

         SECTION 12. REPRESENTATIONS AND WARRANTIES.

         (a) The Credit Enhancement Provider hereby represents and warrants to
the Master Servicer and the Trustee that:

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         (i) The Credit Enhancement Provider has been duly incorporated and is
validly existing as a corporation in good standing under the laws of the State
of Delaware, and has the corporate power and authority to execute, deliver and
perform its obligations under this Agreement.

         (ii) This Agreement has been duly authorized, executed and delivered on
the part of the Credit Enhancement Provider.

         (iii) When executed and delivered, this Agreement will constitute a
valid and binding agreement of the Credit Enhancement Provider enforceable
against the Credit Enhancement Provider in accordance with its terms, except (A)
as the same may be limited by insolvency, bankruptcy or reorganization or other
laws relating to or affecting the enforcement of creditors' rights and (B) as
the same may be limited by general equity principles (whether considered in a
proceeding at law or in equity) and by the discretion of the court before which
any proceeding therefor may be brought.

         (b) The Master Servicer hereby represents and warrants to the Credit
Enhancement Provider and the Trustee that:

         (i) The Master Servicer has been duly incorporated and is validly
existing as a banking corporation in good standing under the laws of the State
of Delaware, and has the corporate power and authority to execute, deliver and
perform its obligations under the Pooling and Servicing Agreement, the Series
Supplement and this Agreement.

         (ii) This Agreement, the Pooling and Servicing Agreement and the Series
Supplement have been duly authorized, executed and delivered on the part of the
Master Servicer.

         (iii) When executed and delivered, each of this Agreement, the Pooling
and Servicing Agreement and the Series Supplement will constitute a valid and
binding agreement of the Master Servicer enforceable against the Master Servicer
in accordance with its terms, except (A) as the same may be limited by
insolvency, bankruptcy, receivership or reorganization or other laws relating to
or affecting the enforcement of creditors' rights and (B) as the same may be
limited by general equity principles (whether considered in a proceeding at law
or in equity) and by the discretion of the court before which any proceeding
therefor may be brought.

         (c) The Trustee hereby represents and warrants to the Credit
Enhancement Provider and the Master Servicer that:

         (i) The Trustee is organized, existing and in good standing under the
laws of the United States of America.

         (ii) The Trustee has full power, authority and right to execute,
deliver and perform this Agreement, the Pooling and Servicing Agreement and the
Series Supplement, and has taken all necessary action to authorize the
execution, delivery and performance by it of this Agreement, the Pooling and
Servicing Agreement and the Series Supplement.

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         (iii) Each of this Agreement, the Pooling and Servicing Agreement and
the Series Supplement have been duly executed and delivered by the Trustee.

         SECTION 13. COVENANTS. Discover Bank, as Master Servicer and on behalf
of the Holder of the Seller Certificate, covenants and agrees that, so long as
this Agreement shall remain in effect or any monetary obligation arising
hereunder or under the Series Supplement shall remain unpaid, it will change the
terms and provisions of a Credit Agreement with respect to a Discover Bank
Discover Card Account or any other Account with respect to which it is the
Servicer (including, without limitation, the calculation of the amount, or the
timing, of charge-offs) only if it does not believe, after a good faith
assessment of the expected effects of such change, that such change will result
in a reduction of the Portfolio Yield, for any Due Period beginning prior to the
termination of the Series, to less than the Base Rate unless such change (i) is
required by any Requirements of Law or (ii) is deemed necessary by Discover Bank
in its sole reasonable judgment to maintain its credit card business on a
competitive basis. For purposes of this Section 13, "Base Rate" shall mean (i)
the weighted average of the Certificate Rates for each Class of each Series then
outstanding plus (ii) 1% per annum. For purposes of the immediately preceding
sentence, the Certificate Rate for each Class that does not have a fixed
Certificate Rate shall be the actual Certificate Rate for such Class for the
Interest Accrual Period commencing in the immediately preceding Due Period. In
the event that any Additional Seller shall transfer Receivables in Additional
Accounts to the Trust, Discover Bank on behalf of the Holder of the Seller
Certificate shall cause the Servicer with respect to such Additional Accounts to
make the covenant set forth above with respect to such Additional Accounts.

         SECTION 14. GOVERNING LAW. THIS AGREEMENT SHALL BE CONSTRUED IN
ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK, WITHOUT REFERENCE TO
ITS CONFLICT OF LAW PROVISIONS, AND THE OBLIGATIONS, RIGHTS AND REMEDIES OF THE
PARTIES HEREUNDER SHALL BE DETERMINED IN ACCORDANCE WITH SUCH LAWS.

         SECTION 15. TERMINATION. This Agreement shall terminate on the date on
which the Series terminates in accordance with the provisions of the Pooling and
Servicing Agreement and the Series Supplement; provided, however, that this
Agreement may be terminated by the Master Servicer at any time, without penalty,
provided that such termination does not cause the ratings of the Investor
Certificates to be lowered or withdrawn by either of the Rating Agencies; and
provided, further, that all amounts owing to the Credit Enhancement Provider
hereunder with respect to principal and interest on the Loan shall have been
paid in full. Notwithstanding the foregoing, the Credit Enhancement Provider
shall have no rights under this Agreement, and shall not be entitled to any
payments hereunder, if and for so long as there is no Loan outstanding hereunder
and no accrued but unpaid interest.

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         SECTION 16. NOTICES. Unless specifically indicated otherwise herein,
all notices and other communications provided for hereunder shall be in writing
and, if to the Credit Enhancement Provider, addressed to:

                   Discover Receivables Financing Corporation
                                  12 Read's Way
                           New Castle, Delaware 19720
                  Attn: Executive Vice President and Secretary
                              Phone: (302) 323-7167
                               Fax: (302) 323-7393

or, if to the Seller or the Master Servicer, addressed to:

                                  Discover Bank
                                  12 Read's Way
                           New Castle, Delaware 19720
                            Attn: Michael F. Rickert
                              Phone: (302) 323-7434
                               Fax: (302) 323-7393

or, if to the Trustee, addressed to:

                         U.S. Bank National Association
                               One Illinois Center
                       111 East Wacker Drive - Suite 3000
                             Chicago, Illinois 60601
                             Attn: Patricia M. Child
                              Phone: (312) 228-9413
                               Fax: (312) 228-9401

or as to any party at such other address as shall be designated by such party in
a written notice to the other parties.

         Any notice or other communication shall be sufficiently given and shall
be deemed given when delivered to the addressee in writing or when transmitted
by telecopier, receipt of which by the addressee is confirmed by telephone.

         SECTION 17. BANKRUPTCY. To the extent that the Trustee, the Master
Servicer or Discover Bank on behalf of the Holder of the Seller Certificate
makes a payment to the Credit Enhancement Provider or the Credit Enhancement
Provider receives any payment or proceeds with respect to the Loan, which
payment or proceeds or any part thereof are subsequently invalidated, declared
to be fraudulent or preferential, set aside or required to be repaid to a
trustee, receiver or any other party under any state or federal insolvency or
bankruptcy law then, to the extent such payment or proceeds are set aside, the
amount or part thereof intended to be satisfied shall be revived and continue in
full force and effect, as if such payment or proceeds had not been received by
the Credit Enhancement Provider.

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         SECTION 18. LIMITATION OF REMEDIES. The Credit Enhancement Provider
shall not have the right to cause the Loan or any portion thereof to become due
and payable prior to the due date for the Loan as set forth herein.

         SECTION 19. NO PETITION.

         (a) The Credit Enhancement Provider, by entering into this Agreement,
hereby covenants and agrees that it will not at any time institute, join in or
otherwise cause the institution of, against any Seller, the Master Servicer or
the Trust, any bankruptcy, reorganization, arrangement, insolvency or
liquidation proceedings, or other proceedings under any United States federal or
state or similar law prior to a year and a day after the final payment of all
investor certificates issued by any trust with respect to which Discover Bank is
the seller.

         (b) Each of Discover Bank and the Trustee, by entering into this
Agreement, hereby covenants and agrees that it will not at any time institute,
join in or otherwise cause the institution of, against the Credit Enhancement
Provider, any bankruptcy, reorganization, arrangement, insolvency or liquidation
proceedings, or other proceedings under any United States federal or state or
similar law prior to a year and a day after the final payment of all investor
certificates issued by any trust with respect to which Discover Bank is the
seller.

         SECTION 20. AMENDMENTS. This Agreement shall not be amended or modified
without the written consent of each of the parties hereto. No amendment hereto
shall become effective without prior confirmation from the Rating Agencies that
such amendment will not cause a lowering or withdrawal of the then current
ratings of the Investor Certificates of the Series. The Master Servicer shall
provide a copy of any amendment hereto to the Rating Agencies.

         SECTION 21. SUCCESSORS AND ASSIGNS; REPLACEMENT OF CREDIT ENHANCEMENT
PROVIDER.

         (a) This Agreement shall be binding upon, and inure to the benefit of,
the Trustee, the Sellers, the Servicers, the Master Servicer and the Credit
Enhancement Provider and their respective successors and permitted assigns.

         (b) No Seller shall assign its interests hereunder and under the
Pooling and Servicing Agreement or the Series Supplement, or any portion of such
interests, except by an assignment that transfers each such interest to the same
assignee.

         (c) In the event that a successor trustee is appointed pursuant to the
provisions of the Pooling and Servicing Agreement to replace the then current
Trustee, such successor trustee, from and after its appointment, shall be the
Trustee for purposes of this Agreement and shall assume all of the rights and
obligations of the Trustee hereunder.

         (d) The Credit Enhancement Provider may not assign any of its rights or
obligations hereunder without the prior written consent of Discover Bank on
behalf of the Holder of the Seller Certificate and without prior written
confirmation from the Rating Agencies that

                                       11
<PAGE>   14

such assignment will not result in the lowering or withdrawal of the rating of
any Class of any Series then outstanding.

         SECTION 22. PARTICIPATION. Any successor Credit Enhancement Provider
that is not a special-purpose corporation that is an affiliate of Discover Bank
may, without the consent of the Trustee, the Trust, any Seller, the Master
Servicer, any Servicer or any Certificateholder of the Series, sell
participations to one or more banks or other entities in all or a portion of its
rights under this Agreement (including all or a portion of the Loan); provided,
however, that (a) the Credit Enhancement Provider's obligations under this
Agreement shall remain unchanged, (b) the Credit Enhancement Provider shall
remain solely responsible to the other parties hereto for the performance of
such obligations, (c) the Trustee, the Trust, the Sellers and the Master
Servicer shall continue to deal solely and directly with the Credit Enhancement
Provider in connection with the Credit Enhancement Provider's rights and
obligations under this Agreement, and (d) the Credit Enhancement Provider shall
retain the sole right to enforce the obligations of the Trustee, the Trust, the
Sellers or the Master Servicer under this Agreement and to approve any
amendment, modification or waiver of any provision of this Agreement.

                                       12
<PAGE>   15

         IN WITNESS WHEREOF, the parties hereby have caused this Agreement to be
duly executed and delivered by the undersigned thereunto duly authorized as of
the day and year first above written.

                                    DISCOVER RECEIVABLES FINANCING
                                      CORPORATION,
                                    as Credit Enhancement Provider

                                    By  /s/ Jai Sooklal
                                       ---------------------------------------
                                    Name:  Jai Sooklal
                                    Title: Vice President

                                    DISCOVER BANK,
                                    as Master Servicer, Servicer and Seller

                                    By  /s/ Michael F. Rickert
                                       ---------------------------------------
                                    Name:  Michael F. Rickert
                                    Title: Vice President, Chief Accounting
                                           Officer and Treasurer

                                    U.S. BANK NATIONAL ASSOCIATION, as Trustee

                                    By  /s/ Patricia M. Child
                                       ---------------------------------------
                                    Name:  Patricia M. Child
                                    Title: Vice President

                                       13<PAGE>   1
                                                                     EXHIBIT 4.3

          BOOK-ENTRY-ONLY COLLATERALIZED MORTGAGE OBLIGATIONS (CMOs) -
             WITHOUT OWNER OPTION TO REDEEM/PASS-THROUGH SECURITIES/
                           AND ASSET-BACKED SECURITIES

                           Letter of Representations*
                      [to be Completed by Issuer and Agent]

                   Discover Card Master Trust I, Series 2000-9
                   -------------------------------------------
                                [Name of Issuer]

                         U.S. Bank National Association
                         ------------------------------
                                 [Name of Agent]

                                                               December 19, 2000
                                                                    ------------
                                                                          [Date]

Attention:  General Counsel's Office
The Depository Trust Company
55 Water Street 49th Floor
New York, NY 10041-0099

         Re:     6.35% Class A Credit Card Pass-Through Certificates and
                 ---------------------------------------------------------------
                 Floating Rate Class B Credit Card Pass-Through Certificates,
                 ---------------------------------------------------------------
                 Discover Card Master Trust 1, Series 2000-9____________________
                 ---------------------------------------------------------------
                           [Issue description ("The Securities")]

Ladies and Gentlemen:

         This letter sets forth our understanding with respect to certain
matters relating to the Securities. Agent shall act as trustee, paying agent,
fiscal agent, or other such agent of Issuer with respect to the Securities. The
Securities have been issued pursuant to a trust indenture, trust agreement,
pooling and servicing agreement or other such document authorizing the issuance
of

----------

*    This Letter of Representations includes the Addendum attached hereto, which
     modifies and supercedes this Letter of Representations to the extent set
     forth therein.

<PAGE>   2
the Securities dated October 1, 1993 (the "Document"). Morgan Stanley & Co.
Incorporated; ABN AMRO Incorporated; Banc of America Securities LLC; Barclays
Capital Inc.; Dresdner Kleinwort Benson North America LLC
["Underwriter/Placement Agent"] is distributing the Securities through The
Depository Trust Company ("DTC").

                  To induce DTC to accept the Securities as eligible for deposit
at DTC, and to act in accordance with its Rules with respect to the Securities,
Issuer and Agent make the following representations to DTC:

                  1. Prior to closing on the Securities on December 19, 2000
there shall be deposited with DTC one or more Security certificates registered
in the name of DTC's nominee, Cede & Co., for each stated maturity of the
Securities in the face amounts set forth on Schedule A hereto, the total of
which represents 100% of the principal amount of such Securities. If however,
the aggregate principal amount of any maturity exceeds $400 million, one
certificate shall be issued with respect to each $400 million of principal
amount and an additional certificate shall be issued with respect to any
remaining principal amount. Each Security certificate shall bear the following
legend:

                           Unless this certificate is presented by an authorized
         representative of The Depository Trust Company, a New York corporation
         ("DTC"), to Issuer or its agent for registration of transfer, exchange,
         or payment, and any certificate issued is registered in the name of
         Cede & Co. or in such other name as is requested by an authorized
         representative of DTC (and any payment is made to Cede & Co. or to such
         other entity as is requested by an authorized representative of DTC),
         ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR
         TO ANY PERSON IS WRONGFUL inasmuch as the registered owner hereof, Cede
         & Co., has an interest herein.

Issuer represents:

                  The Security certificate(s) shall remain in Agent's custody as
a "Balance Certificate" subject to the provisions of the Balance Certificate
Agreement between Agent and DTC currently in effect.

                  On each day on which Agent is open for business and on which
it receives an instruction originated by a DTC participant ("Participant")
through DTC's Deposit/Withdrawal at Custodian ("DWAC") system to increase the
Participant's account by a specified number of Securities (a "Deposit
Instruction"), Agent shall, no later than 6:30 p.m. (Eastern Time) that day,
either approve or cancel the Deposit Instruction through the DWAC system.

                  On each day on which Agent is open for business and on which
it receives an instruction originated by Participant through the DWAC system to
decrease the Participant's

<PAGE>   3

account by a specified number of Securities (a "Withdrawal Instruction"), Agent
shall, no later than 6:30 pm. (Eastern Time) that day, either approve or cancel
the Withdrawal Instruction through the DWAC system.

                  Agent agrees that its approval of a Deposit or Withdrawal
Instruction shall be deemed to be the receipt by DTC of a new reissued or
reregistered certificated Security on registration of transfer to the name of
Cede & Co. for the quantity of Securities evidenced by the Balance Certificate
after the Deposit or Withdrawal Instruction is effected.

                  2. Issuer: (a) understands that DTC has no Obligation to, and
will not, communicate to its Participants or to any person having an interest in
the Securities any information contained in the Security certificate(s); and (b)
acknowledges that neither DTC's Participants nor any person having an interest
in the Securities shall be deemed to have notice of the provisions of the
Security certificates by virtue of submission of such certificate(s) to DTC.

                  3. In the event of any solicitation of consents from or voting
by holders of the Securities, Issuer or Agent shall establish a record date for
such purposes (with no provision for revocation of consents or votes by
subsequent holders) and shall send notice of such record date to DTC no fewer
than 15 calendar days in advance of such record date. Notices to DTC pursuant to
this Paragraph by telecopy shall be directed to DTC's Reorganization Department,
Proxy Unit at (212) 855-5181 or (212) 855-5182. If the party sending the notice
does not receive a telecopy receipt from DTC confirming that the notice has been
received, such party shall telephone (212) 855-5202. Notices to DTC pursuant to
this Paragraph, by mail or by any other means, shall be sent to:

                                    Supervisor, Proxy Unit
                                    Reorganization Department
                                    The Depository Trust Company
                                    55 Water Street 50th Floor
                                    New York, NY 10041-0099

                  4. In the event of a full or partial redemption, Issuer or
Agent shall send a notice to DTC specifying: (a) the amount of the redemption or
refunding; (b) in the case of a refunding, the maturity date(s) established
under the refunding; and (c) the date such notice is to be distributed to
Security holders (the "Publication Date"). Such notice shall be sent to DTC by a
secure means (e.g. legible telecopy, registered or certified mail, overnight
delivery) in a timely manner designed to assure that such notice is in DTC's
possession no later than the close of business on the business day before or, if
possible, two business days before the Publication Date. Issuer or Agent shall
forward such notice either in a separate secure transmission for each CUSIP
number or in a secure transmission for multiple CUSIP numbers (if applicable)
which includes a manifest or list of each CUSIP number submitted in that
transmission. (The party sending such notice shall have a method to verify
subsequently the use of such means and the timeliness of such notice). The
Publication Date shall be no fewer than 30 days nor more than 60 days prior to
the redemption date or, in the case of an advance refunding, the date that the
proceeds are deposited in escrow. Notices to DTC pursuant to this Paragraph by
telecopy shall

<PAGE>   4

be directed to DTC's Call Notification Department at (516) 227-4164 or (516)
227-4190. If the party sending the notice does not receive a telecopy receipt
from DTC confirming that the notice has been received, such party shall
telephone (516) 227-4070. Notices to DTC pursuant to this Paragraph, by mail or
by any other means, shall be sent to:

                                    Manager, Call Notification Department
                                    The Depository Trust Company
                                    711 Stewart Avenue
                                    Garden City, NY  11530-4719

                  5. In the event of an invitation to tender the Securities
(including mandatory tenders, exchanges, and capital changes), notice by Issuer
or Agent to Security holders shall be sent to DTC specifying the terms of the
tender and the Publication Date of such notice. Such notice shall be sent to DTC
by a secure means (e.g. legible telecopy, registered or certified mail,
overnight delivery) in a timely manner designed to assure that such notice is in
DTC's possession no later than the close of business on the business day before
or, if possible, two business days before the Publication Date. Issuer or Agent
shall forward such notice either in a separate secure transmission for each
CUSIP number or in a secure transmission for multiple CUSIP numbers (if
applicable) which includes a manifest or list of each CUSIP number submitted in
that transmission. (The party sending such notice shall have a method to verify
subsequently the use and timeliness of such notice.) Notices to DTC pursuant to
this Paragraph and notices of other corporate actions by telecopy shall be
directed to DTC's Reorganization Department at (212) 855-5488. If the party
sending the notice does not receive a telecopy receipt from DTC confirming that
the notice has been received, such party shall telephone (212) 855-5290. Notices
to DTC pursuant to this Paragraph, by mail or by any other means, shall be sent
to:

                                    Manager, Reorganization Department
                                    Reorganization Window
                                    The Depository Trust Company
                                    55 Water Street 50TH Floor
                                    New York, NY  10041-0099

                  6. It is understood that if the Security holders shall at any
time have the right to tender the Securities to Issuer and require that Issuer
repurchase such holders' Securities pursuant to the document and Cede & Co., as
nominee of DTC, or its registered assigns, as the record owner, is entitled to
tender the Securities, such tenders will be effected by means of DTC's Repayment
Option Procedures. Under the Repayment Option Procedures, DTC shall receive,
during the applicable tender period, instructions from its Participants to
tender Securities for purchase. Issuer and Agent agree that such tender for
purchase may be made by DTC by means of a book-entry credit of such Securities
to the account of Agent, provided that such credit is made on or before the
final day of the applicable tender period. DTC agrees that promptly after the
recording of any such book-entry credit, it will provide to Agent an Agent
Receipt and Confirmation or the equivalent, in accordance with the Repayment
Option Procedures, identifying the Securities and the aggregate principal amount
thereof as to which such tender for purchase has been made.

<PAGE>   5

                  Agent shall send DTC notice regarding such optional tender by
hand or by a secure means (e.g., legible facsimile transmission, registered or
certified mail, overnight delivery) in a timely manner designed to assure that
such notice is in DTC's possession no later than the close of business two
business days before the Publication Date. The Publication Date shall be no
fewer than 15 days prior to the expiration date of the applicable tender period.
Such notice shall state whether any partial redemption of the Securities is
scheduled to occur during the applicable optional tender period. Notices to DTC
pursuant to this Paragraph by telecopy shall be directed to DTC's Put Bond Unit
at (212) 855-5235. If the party sending the notice does not receive a telecopy
receipt from DTC confirming that the notice has been received, such party shall
telephone (212) 855-5230. Notices to DTC pursuant to this Paragraph, by mail or
by any other means, shall be sent to:

                                    Supervisor, Put Bond Unit
                                    Reorganization Window
                                    The Depository Trust Company
                                    55 Water Street 50TH Floor
                                    New York, NY  10041-0099

                  7. All notices and payment advices sent to DTC shall contain
the CUSIP number of the Securities.

                  8. Issuer or Agent shall send DTC written notice with respect
to the dollar amount per $1,000 original face value (or other minimum authorized
denomination if less than $1,000 face value) payable on each payment date
allocated as to the interest and principal portions thereof preferably five, but
no fewer than two, business days prior to such payment date. Such notices, which
shall also contain the current pool factor, any special adjustments to
principal/interest rates (e.g., adjustments due to deferred interest or
shortfall), and Agent contact's name and telephone number, shall be sent by
telecopy to DTC's Dividend Department at (212) 855-4555, and receipt of such
notices shall be confirmed by telephoning (212) 855-4550. Notices to DTC,
pursuant to this Paragraph, by mail or by any other means, shall be sent to:

                                    Manager, Announcements
                                    Dividend Department
                                    The Depository Trust Company
                                    55 Water Street 25TH Floor
                                    New York, NY  10041-0099

                  9. Issuer represents: The interest accrual period is payment
date to payment date.

                  10. Issuer or Agent shall provide a written notice of interest
payment information, including the stated coupon rate information, to DTC as
soon as the information is available. Issuer or Agent shall provide such notice
directly to DTC electronically, as previously arranged by Issuer or Agent and
DTC. If electronic transmission has not been arranged, absent any other
arrangements between Issuer or Agent and DTC, such information shall be sent by

<PAGE>   6

telecopy to DTC's Dividend Department at (212) 855-4555 or (212) 855-4556. If
the party sending the notice does not receive a telecopy receipt from DTC
confirming that the notice has been received, such party shall telephone (212)
855-4550. Notices to DTC pursuant to this Paragraph, by mail or by any other
means, shall be sent to DTC's Dividend Department as indicated in Paragraph 8.

                  11. Interest payments and principal payments that are part of
periodic principal-and-interest payments shall be received by Cede & Co., as
nominee of DTC, or its registered assigns, in same-day funds no later than 2:30
p.m. (Eastern Time) on each payment date. Issuer shall remit by 1:00 p.m.
(Eastern Time) on the payment date all such interest payments due Agent, or at
such earlier time as may be required by Agent to guarantee that DTC shall
receive payment in same-day funds no later than 2:30 p.m. (Eastern Time) on the
payment date. Absent any other arrangements between Issuer or Agent and DTC,
such funds shall be wired to the Dividend Deposit Account number that will be
stamped on the signature page hereof at the time DTC executes this Letter of
Representations.

                  12. Issuer or Agent shall provide DTC's Dividend Department,
no later than 12:00 noon (Eastern Time) on the payment date, automated
notification of CUSIP-level detail. If the circumstances prevent the funds paid
to DTC from equaling the dollar amount associated with the detail payments by
12:00 noon (Eastern Time), Issuer or Agent must provide CUSIP-level
reconciliation to DTC no later than 2:30 p.m. (Eastern Time). Reconciliation
must be provided by either automated means or written format. Such
reconciliation notice, if sent by telecopy, shall be directed to DTC Dividend
Department at (212) 855-4633 and receipt of such reconciliation notice shall be
confirmed by telephoning (212) 855-4430.

                  13. Maturity and redemption payments allocated with respect to
each CUSIP number shall be received by Cede & Co., as nominee of DTC, or its
registered assigns, in same-day funds no later than 2:30 p.m. (Eastern Time) on
the payment date. Issuer shall remit by 1:00 p.m. (Eastern Time) on the payment
date all such maturity and redemption payments due Agent, or at such earlier
time as required by Agent to guarantee that DTC shall receive payment in
same-day funds no later than 2:30 p.m. (Eastern Time) on the payment date.
Absent any other arrangements between Issuer or Agent and DTC, such funds shall
be wired to the Redemption Deposit Account number that will be stamped on the
signature page hereof at the time DTC executes this Letter of Representations.

                  14. Principal payments (plus accrued interest, if any) as the
result of optional tenders for purchase effected by means of DTC's Repayment
Option Procedures shall be received by Cede & Co., as nominee of DTC, or its
registered assigns, in same-day funds no later than 2:30 p.m. (Eastern Time) on
the payment date. Issuer shall remit by 1:00 p.m. (Eastern Time) on the payment
date all such reorganization payments due Agent, or at such earlier time as
required by Agent to guarantee that DTC shall receive payment in same-day funds
no later than 2:30 p.m. (Eastern Time) on the payment date. Absent any other
arrangements between Issuer or Agent and DTC, such funds shall be wired to the
Reorganization Deposit Account number that will be stamped on the signature page
hereof at the time DTC executes this Letter of Representations.

<PAGE>   7

                  15. Agent shall send DTC all periodic certificate holders
remittance reports with respect to the Securities. If sent by facsimile
transmission, such reports shall be sent to (212) 855-4777. If the party sending
the report does not receive a telecopy receipt from DTC confirming that the
notice has been received, such party shall telephone (212) 855-4590.

                  16. DTC may direct Issuer or Agent to use any other number or
address as the number or address to which notices or payments of interest or
principal may be sent.

                  17. In the event of a redemption, acceleration, or any other
similar transaction (e.g., tender made and accepted in response to Issuer's or
Agent's invitation) necessitating a reduction in the aggregate principal amount
of Securities outstanding or an advance refunding of part of the Securities
outstanding, DTC, in its discretion: (a) may request Issuer or Agent to issue
and authenticate a new Security certificate; or (b) may make an appropriate
notation on the Security certificate indicating the date and amount of such
reduction in principal except in the case of final maturity, in which case the
certificate will be presented to Issuer or Agent prior to payment, if required.

                  18. In the event that Issuer determines that beneficial owners
of Securities shall be able to obtain certificated Securities, Issuer or Agent
shall notify DTC of the availability of certificates. In such event, Issuer or
Agent shall issue, transfer, and exchange certificates in appropriate amounts,
as required by DTC and others.

                  19. DTC may discontinue providing its services as securities
depository with respect to the Securities at any time be giving reasonable
notice to Issuer or Agent (at which time DTC will confirm with Issuer or Agent
the aggregate principal amount of Securities outstanding). Under such
circumstances, at DTC's request Issuer and Agent shall cooperate fully with DTC
by taking appropriate action to make available one or more separate certificates
evidencing Securities to any Participant having Securities credited to its DTC
accounts.

                  20. Nothing herein shall be deemed to require Agent to advance
funds on behalf of Issuer.

                  21. This Letter of Representations may be executed in any
number of counterparts, each of which when so executed shall be deemed to be an
original, but all such counterparts together shall constitute but one and the
same instrument.

                  22. This Letter of Representations shall be governed by, and
construed in accordance with, the laws of the State of New York, without giving
effect to principles of conflicts of law.

                  23. The sender of each notice delivered to DTC pursuant to
this Letter of Representations is responsible for confirming that such notice
was properly received by DTC.

                  24. Issuer recognizes that DTC does not in any way undertake
to, and shall not have any responsibility to, monitor or ascertain the
compliance of any transactions in the Securities with the following, as amended
from time to time: (a) any exemptions from

<PAGE>   8

registration under the Securities Act of 1933; (b) the Investment Company Act of
1940; (c) the Employee Retirement Income Security Act of 1974; (d) the Internal
Revenue Code of 1986; (e) any rules of any self-regulatory organizations (as
defined under the Securities Exchange Act of 1934); or (f) any other local,
state, or federal laws or regulations thereunder.

                  25. Issuer hereby authorizes DTC to provide to Agent listings
of Participants' holdings, known as Securities Position Listings ("SPLs") with
respect to the Securities from time to time at the request of the Agent. DTC
charges a fee for such SPLs. This authorization, unless revoked by Issuer, shall
continue with respect to the Securities while any Securities are on deposit at
DTC, until and unless Agent shall no longer be acting. In such event, Issuer
shall provide DTC with similar evidence, satisfactory to DTC, of the
authorization of any successor thereto so to act. Requests for SPLs shall be
sent by telecopy to the Proxy Unit of DTC's Reorganization Department at (212)
855-5181 or (212) 855-5182. Receipt of such requests shall be confirmed by
telephoning (212) 855-5202. Requests for SPLs, sent by mail or by any other
means, shall be directed to the address indicated in Paragraph 3.

                  26. Issuer and Agent shall comply with the applicable
requirements stated in DTC's Operational Arrangements, as they may be amended
from time to time. DTC's Operational Arrangements are posted on DTC's website at
"www.DTC.org."

                  27. The following riders(s), attached hereto, are hereby
incorporated into this Letter of Representations:

                  (1) Addendum;

                  (2) Schedule A

<PAGE>   9

NOTES:

A. IF THERE IS AN AGENT (AS DEFINED IN THIS LETTER OF REPRESENTATIONS), AGENT AS
WELL AS ISSUER MUST SIGN THIS LETTER. IF THERE IS NO AGENT, IN SIGNING THIS
LETTER ISSUER ITSELF UNDERTAKES TO PERFORM ALL OF THE OBLIGATIONS SET FORTH
HEREIN.

B. SCHEDULE B CONTAINS STATEMENTS THAT DTC BELIEVES ACCURATELY DESCRIBE DTC, THE
METHOD OF EFFECTING BOOK-ENTRY TRANSFERS OF SECURITIES DISTRIBUTED THROUGH DTC,
AND CERTAIN RELATED MATTERS.

                                             Very truly yours,

                                             DISCOVER CARD MASTER TRUST I,
                                             by DISCOVER BANK,
                                             as MASTER SERVICER
                                             -----------------------------------
                                                       [Issuer]

                                             By:  /s/ Michael F. Rickert
                                                --------------------------------
                                                [Authorized Officer's Signature]

                                                U.S. BANK NATIONAL ASSOCIATION
                                             -----------------------------------
                                                           [Agent]

                                             By:  /s/ Patricia M. Child
                                                --------------------------------
                                                [Authorized Officer's Signature]

Received and Accepted:
THE DEPOSITORY TRUST COMPANY

By:      /s/ Richard B. Nesson
   --------------------------------

Funds should be wired to:
The Chase Manhattan Bank
ABA #021 000 021
For credit to a/c Cede & Co.
c/o The Depository Trust  Company

[Select Appropriate Account.]

Dividend Deposit Account #066-026776
Redemption Deposit Account #066-027306
Reorganization Deposit Account #066-027608

cc:      Underwriter/Placement Agent
         Underwriter's/Placement Agent's Counsel

<PAGE>   10

                                 A D D E N D U M

                                       to

                  Letter of Representations dated December 19, 2000
                  Discover Card Master Trust I, Series 2000-9

General:          For purposes of this Letter of Representations:

                  "Securities" shall mean the $500,000,000 aggregate principal
                  amount of 6.35% Class A Credit Card Pass-Through Certificates
                  and the $26,316,000 aggregate principal amount of Floating
                  Rate Class B Credit Card Pass-Through Certificates issued by
                  Discover Card Master Trust I, Series 2000-9 and "Security
                  holders" shall mean the holders of such certificates;

                  "Issuer" shall mean Discover Bank (formerly known as Greenwood
                  Trust Company) ("Discover") on behalf of Discover Card Master
                  Trust I, Series 2000-9; and

                  "Document" shall mean the Pooling and Servicing Agreement
                  dated as of October 1, 1993, as amended and as supplemented by
                  the Series Supplement dated as of December 19, 2000, each by
                  and between Discover as Master Servicer, Servicer and Seller
                  and the Agent.

Paragraph 8:      The following is hereby added after the third sentence of
                  Paragraph 8:

                           "Issuer or Agent will forward such notice either in a
                           separate secure transmission for each CUSIP number or
                           in a secure transmission for multiple CUSIP numbers
                           (if applicable) which includes a manifest or list of
                           each CUSIP submitted in that transmission."

Paragraph 16:     The following is hereby inserted after the word "Agent" in
                  line 1 of Paragraph 16:

                           ", and if requested, shall confirm such direction in
                           writing if practicable,"

Paragraph 17:     The following is hereby inserted at the end of Paragraph 17
                  before the period:

                           "provided, however, that this paragraph shall not
                           apply to any event that causes a reduction in the
                           aggregate principal amount of Securities outstanding
                           that occurs in accordance with their terms,
                           including, without limitation, an Amortization Event
                           (as defined in the Document)".

<PAGE>   11

                                   SCHEDULE A

                   DISCOVER CARD MASTER TRUST I, SERIES 2000-9

   $500,000,000 6.35% CLASS A CREDIT CARD PASS-THROUGH CERTIFICATES
   AND $26,316,000 FLOATING RATE CLASS B CREDIT CARD PASS-THROUGH CERTIFICATES

<TABLE>
<CAPTION>

                                Principal Amount      Maturity Date*       Interest Rate
                                ----------------      --------------       -------------
<S>                             <C>                   <C>                  <C>
     Class A Certificates
         CUSIP Number
         ------------
          25466KDG1

     Certificate Number:
     -------------------
              1                 $400,000,000        July 16, 2008              6.35%
              2                 $100,000,000        July 16, 2008              6.35%

     Class B Certificates
         CUSIP Number
         ------------
          25466KDH9

     Certificate Number:
     ------------------
              1                 $ 26,316,000        July 16, 2008          Floating Rate

</TABLE>

--------

* Last Possible Distribution Date

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