**Note on TDC Mezzanine Pinout for the XFT System**

August 27, 1997

Theresa Shaw

**IMPORTANT - Please Note**

**\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\***

The Wire number referred to in the below Tables represent a specific COT
Wire geometry. **This is not neccessarily the same as the WIRE_DATA\_#
referred to in the TDC document.** To understand that relationship, one
must know how the TDC is being cabled at its input. This information was
not known when we last inquired.

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

The below figure represnts our definition of Wires 0-95 with respect to
the COT Wire geometry:

![](media/image1.emf)

The TDC Transition card will feed two Ansley Cables. Information will be
sent in 6 time slices within the 132 ns CDF_CLOCK. An edge strobe will
be sent with the data, as well as a Beam_zero Marker (set high for all
Beam_zero events) and a Word_zero Marker (set high in time slice 0).

  ------- ------- -------- ------ ----------- ------ ------- --------------- --------
  Time    Pairs   Pair 3   Pair 4 Pair 5      Pair 6 Pair 7  Pairs 8-23      Pairs
  Slice   1,2                                                                24,25

  0       GND     STROBE   GND    Beam_zero   GND    logic   Wires 0-15      GND
                                                     high    Prompt          

  1       GND     STROBE   GND    Beam_zero   GND    logic   Wires 16-31     GND
                                                     low     Prompt          

  2       GND     STROBE   GND    Beam_zero   GND    logic   Wires 32-47     GND
                                                     low     Prompt          

  3       GND     STROBE   GND    Beam_zero   GND    logic   Wires 0-15      GND
                                                     low     Delay           

  4       GND     STROBE   GND    Beam_zero   GND    logic   Wires 16-31     GND
                                                     low     Delay           

  5       GND     STROBE   GND    Beam_zero   GND    logic   Wires 32-47     GND
                                                     low     Delay           
  ------- ------- -------- ------ ----------- ------ ------- --------------- --------

TDC Tarnsition Module Cable 1 - Low Phi Channels (Wires) 0-47

  ------- ------- -------- ------ ----------- ------ ------- --------------- --------
  Time    Pairs   Pair 3   Pair 4 Pair 5      Pair 6 Pair 7  Pairs 8-23      Pairs
  Slice   1,2                                                                24,25

  0       GND     STROBE   GND    Beam_zero   GND    logic   Wires 48-63     GND
                                                     high    Prompt          

  1       GND     STROBE   GND    Beam_zero   GND    logic   Wires 64-79     GND
                                                     low     Prompt          

  2       GND     STROBE   GND    Beam_zero   GND    logic   Wires 80-95     GND
                                                     low     Prompt          

  3       GND     STROBE   GND    Beam_zero   GND    logic   Wires 48-63     GND
                                                     low     Delay           

  4       GND     STROBE   GND    Beam_zero   GND    logic   Wires 64-79     GND
                                                     low     Delay           

  5       GND     STROBE   GND    Beam_zero   GND    logic   Wires 80-95     GND
                                                     low     Delay           
  ------- ------- -------- ------ ----------- ------ ------- --------------- --------

TDC Transition Module Cable 2 - High Phi Channels (Wires) 48-95

To feed these cables, we require the following signals from the
Mezzanine card:

Data (15:0) - represents multiplexed Wire data from Wire set (47:0)

Data (31:16) - represents multiplexed Wire data from Wire set (95:48)

Beam_Zero

Word_Zero

Strobe

**TABLE TDC (J4/J5) Connector Pin Assignments**

  ----------- ----------- ----------- ----------- ----------- -----------
  PIN         ROW A       ROW B       ROW C       ROW D       ROW E

  1                                                           Data (0)

  2                                                           Data (1)

  3                                                           Data (2)

  4                                                           Data (3)

  5                                                           Data (4)

  6                                                           Data (5)

  7                                                           Data (6)

  8                                                           Data (7)

  9                                                           Data (8)

  10                                                          Data (9)

  11                                                          Data (10)

  12                                                          Data (11)

  13                                                          Data (12)

  14                                                          Data (13)

  15                                                          Data (14)

  16                                                          Data (15)

  17                                                          

  18                                                          Word_Zero

  19                                                          Beam_Zero

  20                      **NC**      **NC**      **NC**      **NC**

  21          **NC**      **NC**      **NC**      **NC**      **NC**

  22          **NC**      **NC**      **NC**      **NC**      **NC**

  23                                                          Strobe

  24                                                          

  25                                                          Data (16)

  26                                                          Data (17)

  27                                                          Data (18)

  28                                                          Data (19)

  29                                                          Data (20)

  30                                                          Data (21)

  31                                                          Data (22)

  32                                                          Data (23)

  33                                                          Data (24)

  34                                                          

  35                                  Alignment               
                                      Pins                    

  36                                                          

  37                                                          Data (25)

  38                                                          Data (26)

  39                                                          Data (27)

  40                                                          Data (28)

  41                                                          Data (29)

  42                                                          Data (30)

  43                                                          Data (31)

  44                                                          

  45                      **NC**      **NC**      **NC**      **NC**

  46          **NC**      **NC**      **NC**      **NC**      **NC**

  47          **NC**      **NC**      **NC**      **NC**      **NC**
  ----------- ----------- ----------- ----------- ----------- -----------

**TABLE Mezzanine Connector 2**

  ----------- ----------- ----------- ----------- ----------- ------------
  Pin         Signal      Pin         Signal      Pin         Signal

  1           **GND**     48          Data (7)    95          

  2           **GND**     49                      96          Data (13)

  3           **GND**     50                      97          

  4           **GND**     51                      98          

  5                       52                      99          

  6                       53          Data (8)    100         

  7                       54                      101         Data (14)

  8                       55                      102         

  9           Data (0)    56                      103         

  10                      57          **GND**     104         

  11                      58          **GND**     105         

  12                      59          **SPARE**   106         Data (15)

  13                      60          **SPARE**   107         **GND**

  14          Data (1)    61          **VCC**     108         **GND**

  15                      62          **VCC**     109         

  16                      63          **VCC**     110         

  17                      64          **VCC**     111         

  18                      65          **VCC**     112         

  19          Data (2)    66          **VCC**     113         

  20                      67          **VCC**     114         

  21          **GND**     68          **VCC**     115         

  22          **GND**     69          **SPARE**   116         

  23                      70          **SPARE**   117         

  24                      71          **GND**     118         Word_Zero

  25                      72          **GND**     119         

  26          Data (3)    73                      120         

  27                      74          Data (9)    121         

  28                      75                      122         

  29                      76                      123         Beam_Zero

  30                      77                      124         

  31          Data (4)    78                      125         **GND**

  32                      79          Data (10)   126         **GND**

  33                      80                      127         **AS\***

  34                      81                      128         **AK\***

  35                      82                      129         **DS\***

  36          Data (5)    83                      130         **DK\***

  37                      84          Data (11)   131         **R/W\***

  38                      85                      132         **INIT\***

  39          **GND**     86                      133         **PROG\***

  40          **GND**     87                      134         **SCLK\***

  41                      88                      135         **SDATA**

  42                      89          **GND**     136         **DONE**

  43          Data (6)    90          **GND**     137         **GND**

  44                      91          Data (12)   138         **GND**

  45                      92                      139         **GND**

  46                      93                      140         **GND**

  47                      94                                  
  ----------- ----------- ----------- ----------- ----------- ------------

**TABLE Mezzanine Connector 3**

  ----------- ----------- ----------- ----------- ----------- -----------
  Pin         Signal      Pin         Signal      Pin         Signal

  1           **GND**     48          Data (21)   95          

  2           **GND**     49                      96          Data (27)

  3           **GND**     50                      97          

  4           **GND**     51                      98          

  5                       52                      99          

  6                       53          Data (22)   100         

  7                       54                      101         Data (28)

  8                       55                      102         

  9           Strobe      56                      103         

  10                      57          **GND**     104         

  11                      58          **GND**     105         

  12                      59          **SPARE**   106         Data (29)

  13                      60          **SPARE**   107         **GND**

  14                      61          **VCC**     108         **GND**

  15                      62          **VCC**     109         

  16                      63          **VCC**     110         

  17                      64          **VCC**     111         

  18                      65          **VCC**     112         

  19          Data (16)   66          **VCC**     113         Data (30)

  20                      67          **VCC**     114         

  21          **GND**     68          **VCC**     115         

  22          **GND**     69          **SPARE**   116         

  23                      70          **SPARE**   117         

  24                      71          **GND**     118         Data (31)

  25                      72          **GND**     119         

  26          Data (17)   73                      120         

  27                      74          Data (23)   121         

  28                      75                      122         

  29                      76                      123         

  30                      77                      124         

  31          Data (18)   78                      125         **GND**

  32                      79          Data (24)   126         **GND**

  33                      80                      127         **AD0**

  34                      81                      128         **AD1**

  35                      82                      129         **AD2**

  36          Data (19)   83                      130         **AD3**

  37                      84          Data (25)   131         **AD4**

  38                      85                      132         **AD5**

  39          **GND**     86                      133         **AD6**

  40          **GND**     87                      134         **AD7**

  41                      88                      135         **NC**

  42                      89          **GND**     136         **NC**

  43          Data (20)   90          **GND**     137         **GND**

  44                      91          Data (26)   138         **GND**

  45                      92                      139         **GND**

  46                      93                      140         **GND**

  47                      94                                  
  ----------- ----------- ----------- ----------- ----------- -----------