CADM-SPO401-LR8C 400G QSFP-DD PSM8 10km Optical Transceiver Module R02

400G QSFP-DD PSM8 10km Optical Transceiver ModuleFeatures♦

8 channels full-duplex transceiver modules♦

Transmission data rate up to 53Gbps per channel♦

8x53Gbps PAM4 transmitter and PAM4 receiver♦

8 channels1310nm uncooled EML♦

8 channels PIN photo detector array♦

Internal CDR circuits on both receiver and transmitter channels♦

Power consumption <11W♦

Hot Pluggable QSFP DD form factor and Compliant with CMIS 4.0♦

Maximum link length of 2km G.652 SMF with KP-FEC♦

MPO16 APC connector receptacle♦

Built-in digital diagnostic functions♦

Operating case temperature 0℃ to +70℃♦

3.3V power supply voltage♦

RoHS compliant(lead free)Applications♦IEEE 802.3bs 200GBASE-DR4Description
CA OPTRONICS GROUP CADM-SPO401-LR8C is an Eight-Channel, Pluggable, Parallel, FiberOptic QSFP Double Density for 2x200 Gigabit Ethernet Applications. This transceiver is a highperformance module for short-range multi-lane data communication and interconnection applications. It
integrates eight data lanes in each direction with 8x26.5625GBd. Each lane can operate at 53.125Gbps up
to 10km using G.652 SMF with KP-FEC. These modules are designed to operate over singlemode fiber
systems using a nominal wavelength of 1310nm. The electrical interface uses a 76 contact edge typeconnector. The optical
Managementinterface

uses

a

MPO16/MTP16

APC

connector.

TheCommon

Interface

CA OPTRONICS GROUP INC

www.caoptronicsgroup.com+1-510-366-7353

1

CADM-SPO401-LR8C 400G QSFP-DD PSM8 10km Optical Transceiver Module R02

Specification (CMIS) for QSFP DD modules, This module incorporates CA OPTRONICS GROUP
Technologies proven circuit and EML technology to provide reliable long life, high performance, andconsistent service.

Figure1. Module Block Diagram

2x200GBASE-DR4 QSFP DD is one kind of parallel transceiver. EML and PIN array package are
key technique, through I2C system can contact with module.

Absolute Maximum Ratings
Parameter

SymbolMinMax

Unit

Supply Voltage

Vcc-0.3

3.6

V

Input Voltage

Vin-0.3

Vcc+0.3

V

Storage TemperatureTst-2085℃

Case Operating Temperature

Top070℃

Humidity(non-condensing)

Rh

595%

CA OPTRONICS GROUP INC

www.caoptronicsgroup.com+1-510-366-73532CADM-SPO401-LR8C 400G QSFP-DD PSM8 10km Optical Transceiver Module R02

Recommended Operating Conditions
Parameter

SymbolMin

TypicalMax

Unit

Supply Voltage

Vcc

3.13

3.3

3.47

V

Operating Case temperature

Tca

070℃

Data Rate Per Lane

fd

Humidity

Rh

Power DissipationPm

26.5625

GBd

585%

11W

Electrical Specifications
Parameter

SymbolMin

TypicalMax

Unit

Differential input impedanceZin

90100110ohm

Differential Output impedanceZout

90100110ohm

Differential input voltage
amplitude
Differential output voltage
amplitude

ΔVin900mVp-p

ΔVout900mVp-pSkew

Sw300

ps

Bit Error Rate

BER

2.4E-4-Near-end Eye Width at 10^-6probability(EW6)
Near-end Eye Height at 10^-6probability(EH6)
Far-end Eye Width at 10^-6probability(EW6)
Far-end Eye Height at 10^-6probability(EH6)
Near-end Eye Linearity

0.265

UI70mV

0.20

UI30mV

0.85-Note：
1. BER=2.4E-4; PRBS31Q@26.5625GBd. Pre-FEC
2.

Differential input voltage amplitude is measured between TxnP and TxnN.

3.

Differential output voltage amplitude is measured between RxnP and RxnN.

Optical Characteristics

CA OPTRONICS GROUP INC

www.caoptronicsgroup.com+1-510-366-7353

3CADM-SPO401-LR8C 400G QSFP-DD PSM8 10km Optical Transceiver Module R02

Table 3 - Optical Characteristics
Parameter

SymbolMin

TypicalMax

Unit

Notes

Transmitter
Centre Wavelength

λc1304.5--1317.5nm-

Side-mode suppression
ratio

SMSR

30-

--dB-

Average launch power,
each lane

Pout-5.1-

3dBm-

Optical Modulation
Amplitude(OMAouter), each lane

OMA-32.8dBm-Transmitter and dispersion
eye closure(TDEC),eachlane

TDEC

3.4dB

Extinction Ratio

ER-dB--30dB-

1317.5

nm-

3.5

-

Average launch power ofOFF
transmitter, each lane
ReceiverCentre WavelengthλcReceiver Sensitivity inOMAouter

RXsen

-6.6

dBm

1

Stressed Receiver
Sensitivity in OMAouter

SRS-4.1dBm

1

Average power at receiver ,each lane
input, each lane

Pin

3dBm

--12

dB-

dBm

-dBm

-dB-

1304.5---8.1

Receiver Reflectance
LOS Assert-10

LOS De-Assert – OMA
LOS Hysteresis

-7.5
0.5

Note：
1． Measured with conformance test signal at TP3 for BER = 2.4E-4 Pre-FEC

CA OPTRONICS GROUP INC

www.caoptronicsgroup.com+1-510-366-7353

4

CADM-SPO401-LR8C 400G QSFP-DD PSM8 10km Optical Transceiver Module R02

Pin Description

CA OPTRONICS GROUP INC

www.caoptronicsgroup.com+1-510-366-7353

5

CADM-SPO401-LR8C 400G QSFP-DD PSM8 10km Optical Transceiver Module R02

CA OPTRONICS GROUP INC

www.caoptronicsgroup.com+1-510-366-7353

6

CADM-SPO401-LR8C 400G QSFP-DD PSM8 10km Optical Transceiver Module R02

Figure2. Electrical Pin-out Details

CA OPTRONICS GROUP INC

www.caoptronicsgroup.com+1-510-366-7353

7

CADM-SPO401-LR8C 400G QSFP-DD PSM8 10km Optical Transceiver Module R02

ModSelL Pin
The ModSelL is an input signal that shall be pulled to Vcc in the QSFP-DD module. When held low by
the host, the module responds to 2-wire serial communication commands. The ModSelL allows the useof multiple QSFP-DD modules on a single 2-wire interface bus. When ModSelL is “High”, the module
shall not respond to or acknowledge any 2-wire interface communication from the host.

In order to avoid conflicts, the host system shall not attempt 2-wire interface communications within theModSelL de-assert time after any QSFP-DD modules are deselected. Similarly, the host must wait atleast for the period of the ModSelL assert time before communicating with the newly selected module.
The assertion and de-asserting periods of different modules may overlap as long as the above timing
requirements are met.

ResetL Pin
The ResetL signal shall be pulled to Vcc in the module. A low level on the ResetL signal for longer thanthe minimum pulse length (t_Reset_init) initiates a complete module reset, returning all user module
settings to their default state.

LPMode Pin
LPMode is an input signal. The LPMode signal shall be pulled up to Vcc in the QSFP-DD module.
LPMode is used in the control of the module power mode. See CMIS Section 6.3.1.3.

ModPrsL Pin
ModPrsL shall be pulled up to Vcc Host on the host board and pulled low in the module. The ModPrsL
is asserted “Low” when the module is inserted. The ModPrsL is deasserted “High” when the module isphysically absent from the host connector due to the pull-up resistor on the host board.

IntL Pin
IntL is an output signal. The IntL signal is an open collector output and shall be pulled to Vcc Host on
the host board. When the IntL signal is asserted Low it indicates a change in module state, a possible
module operational fault or a status critical to the host system. The host identifies the source of theinterrupt using the 2-wire serial interface. The IntL signal is deasserted “High” after all set interrupt
flags are read.

CA OPTRONICS GROUP INC

www.caoptronicsgroup.com+1-510-366-73538CADM-SPO401-LR8C 400G QSFP-DD PSM8 10km Optical Transceiver Module R02

Power Supply Filtering
The host board should use the power supply filtering shown in Figure3.

Figure3. Host Board Power Supply Filtering

Optical Interface Lanes and Assignment
The optical interface port is a male MPO16(MTP16) APC connector.

Figure 4. Optical Receptacle and Channel Orientation

DIAGNOSTIC MONITORING INTERFACE
Digital diagnostics monitoring function is available on all CA OPTRONICS GROUP QSFP DD products. A
2-wire serial interface provides user to contact with module.

CA OPTRONICS GROUP INC

www.caoptronicsgroup.com+1-510-366-7353

9

CADM-SPO401-LR8C 400G QSFP-DD PSM8 10km Optical Transceiver Module R02

Memory Structure and MappingThis limits the management memory that can be directly accessed by the host to 256 bytes, which is
divided in Lower Memory (addresses 00h through 7Fh) and Upper Memory (addresses 80h through FFh).

A larger addressable management memory is required for all but the most basic modules. This is
supported by a structure of 128-byte pages, together with a mechanism for dynamically mapping any ofthe 128-byte pages from a larger internal management memory space into Upper Memory the hostaddressable space.

The addressing structure of the additional internal management memory2 is shown in Figure 8-2. The
management memory inside the module is arranged as a unique and always host accessible address
space of 128 bytes (Lower Memory) and as multiple upper address subspaces of 128 bytes each (Pages),only one of which is selected as host visible in Upper Memory. A second level of Page selection ispossible for Pages for which several instances exist (e.g. where a bank of pages with the same Page
number exists).

This structure supports a flat 256 byte memory for passive copper modules and permits timely access toaddresses in the Lower Memory, e.g. Flags and Monitors. Less time critical entries, e.g. serial ID
information and threshold settings, are available with the Page Select function in the Lower Page. For
more complex modules which require a larger amount of management memory the host needs to use
dynamic mapping of the various Pages into the host addressable Upper Memory address

space,

whenever needed.

Note: The management memory map has been designed largely after the QSFP memory map. This memory map has
been changed in order to accommodate 8 electrical lanes and to limit the required memory space. The single addressapproach is used as found in QSFP. Paging is used in order to enable time critical interactions between host and module.

Supported Pages
A basic 256 byte subset of the Management Memory Map is mandatory for all CMIS compliant devices.
Other parts are only available for paged memory modules, or when advertised by the module. See CMIS
V4.0 for details regarding the advertisement of supported management memory spaces.

CA OPTRONICS GROUP INC

www.caoptronicsgroup.com+1-510-366-7353

10

CADM-SPO401-LR8C 400G QSFP-DD PSM8 10km Optical Transceiver Module R02

In particular, support of the Lower Memory and of Page 00h is required for all modules, including
passive copper cables. These pages are therefore always implemented. Additional support for Pages 01h,
02h and bank 0 of Pages 10h and 11h is required for all paged memory modules.

Bank 0 of pages 10h-1Fh, provides lane-specific registers for the first 8 lanes, and each additional bankprovides support for additional 8 lanes. Note, however, that the allocation of information over the banks
may be page specific and may not to be related to grouping data for 8 lanes.

The structure allows address space expansion for certain types of modules by allocating additional Pages.
Moreover, additional banks of pages

CA OPTRONICS GROUP INC

www.caoptronicsgroup.com+1-510-366-7353

11

CADM-SPO401-LR8C 400G QSFP-DD PSM8 10km Optical Transceiver Module R02

Figure5. QSFP DD Memory Map

Mechanical Dimensions

Figure6. Mechanical Specifications

CA OPTRONICS GROUP INC

www.caoptronicsgroup.com+1-510-366-7353

12CADM-SPO401-LR8C 400G QSFP-DD PSM8 10km Optical Transceiver Module R02

Regulatory Compliance
CA OPTRONICS GROUP CADM-SPO401-LR8C transceivers are Class 1 Laser Products. They arecompliant with the following standards:
FeatureLaser Safety

Electrical Safety

Environmental protection

CE EMCFCCStandard
IEC 60825-1:2014 (3rd Edition)
IEC 60825-2:2004/AMD2:2010
EN 60825-1-2014
EN 60825-2:2004+A1+A2
EN 62368-1: 2014
IEC 62368-1:2014
UL 62368-1:2014
Directive 2011/65/EU with amendment(EU)2015/863
EN55032：2015
EN55035：2017
EN61000-3-2:2014
EN61000-3-3:2013
FCC Part 15, Subpart B
ANSI C63.4-2014

References
1. QSFP DD MAS Rev5.0
2. CMIS V4.0
3. IEEE802.3bs 200GBASE-DR4
4. OIF CEI-56G-VSR-PAM4

CAUTION:Use of controls or adjustment or performance of procedures other than those specified herein may resultin hazardous radiation exposure.

Ordering information
Part Number

Product Description

CADM-SPO401-LR8C

QSFP DD, 2x200GBASE-DR4, 10km on Singlemode Fiber (SMF),with DSP
Power consumption <11W, MPO16(MTP16) APC connector.

Important Notice
Performance figures, data and any illustrative material provided in this data sheet are typical and must be
specifically confirmed in writing by CA OPTRONICS GROUP before they become applicable to any
particular order

CA OPTRONICS GROUP INC

www.caoptronicsgroup.com+1-510-366-7353

13

CADM-SPO401-LR8C 400G QSFP-DD PSM8 10km Optical Transceiver Module R02

or contract. In accordance with the CA OPTRONICS GROUP policy of continuous improvement
specifications may change without notice.

The publication of information in this data sheet does not imply freedom from patent or other protective
rights of CA OPTRONICS GROUP or others. Further details are available from any CA OPTRONICSGROUP sales representative.

E-mail:sales@caoptronicsgroup.com
Official Site:www.caoptronicsgroup.com

CA OPTRONICS GROUP INC

www.caoptronicsgroup.com+1-510-366-7353

14