Intel Compatible E40GQSFPSR Quick Spec:

Part Number: E40GQSFPSR E40GQSFPSR-EXT E40GQSFPSR-IND

Form Factor: QSFP

TX Wavelength: 850nm

Reach: 400m

Cable Type: MMF

Rate Category: 40GBase

Interface Type: eSR4

DDM: Yes

Connector Type: MPO

Optical Power Budget: 2.4 dB

TX Power Min/Max: -7.50 to 1.00 dBm

RX Power Min/Max: -9.9 to 2.4 dBm

Intel Compatible E40GQSFPSR Product Features

• 4 independent full-duplex channels

• Up to 11.2 Gbps data rate per wavelength

• MTP/MPO optical connector

• QSFP+ MSA compliant

• Digital diagnostic capabilities

• Up to 300m transmission on OM3 multimode ribbon fiber

• CML compatible electrical I/O

• Single +3.3V power supply

• Operating case temperature:

  • Standard 0 to 70 °C

  • Extended -5 to +85 °C

  • Industrial -40 to +85 °C

• XLPPI electric interface

• Maximum power consumption 1.5W

• RoHS-6 compliant

  
  

  Intel Compatible E40GQSFPSR Applications

• Rack to Rack

• Data Center

• Infiniband QDR, DDR and SDR

• 40G Ethernet

Intel Compatible E40GQSFPSR Overview

The E40GQSFPSR is a parallel 40 Gbps Quad Small Form-factor Pluggable (QSFP+) optical module. It provides increased port density and total system cost savings. The QSFP+ full-duplex optical module offers 4 independent transmit and receive channels, each capable of 10 Gbps operation for an aggregate data rate of 40 Gbps on 300 meters of OM3 multi-mode fiber. An optical fiber ribbon cable with an MTP/MPO connector can be plugged into the QSFP+ module receptacle. Proper alignment is ensured by the guide pins inside the receptacle. The cable usually can’t be twisted for proper channel to channel alignment.

Electrical connection is achieved through a pluggable 38-pin IPASS® connector. The module operates via a single +3.3V power supply. LVCMOS/LVTTL global control signals, such as Module Present, Reset, Interrupt and Low Power Mode, are available with the modules. A 2-wire serial interface is available to send and receive more complex control signals, and to receive digital diagnostic information. Individual channels can be addressed and unused channels can be shut down for maximum design flexibility. The product is designed with form factor, optical/electrical connection and digital diagnostic interface according to the QSFP+ Multi-Source Agreement (MSA). It has been designed to meet the harshest external

operating conditions including temperature, humidity and EMI interference. The module offers very high functionality and feature integration, accessible via a two-wire serial interface.

Intel Compatible E40GQSFPSR Functional Diagram

This product converts the 4-channel 10 Gbps electrical input data into CWDM optical signals (light), by a driven 4- wavelength Distributed Feedback Laser (DFB) array. The light is combined by the MUX parts as a 40 Gbps data, propagating out of the transmitter module from the SMF. The receiver module accepts the 40 Gbps CWDM optical signals input, and de-multiplexes it into 4 individual 10Gbps channels with different wavelengths. Each wavelength is collected by a discrete avalanche photodiode (APD), and then outputted as electric data after amplified first by a TIA and then by a post amplifier. Figure 1 shows the functional block diagram of this product.

A single +3.3V power supply is required to power up this product. Both power supply pins VccTx and VccRx are internally connected and should be applied concurrently. As per MSA specifications the module offers 7 low speed hardware control pins (including the 2-wire serial interface): ModSelL, SCL, SDA, ResetL, LPMode, ModPrsL and IntL.

Module Select (ModSelL) is an input pin. When held low by the host, this product responds to 2-wire serial communication commands. The ModSelL allows the use of this product on a single 2-wire interface bus – individual ModSelL lines must be used.

Laser Driver Array (4ch)

DFB

Laser Array (4ch)

Micro- optics

MPT/MPO

Tx3 Tx2 Tx1 Tx0

Rx3 Rx2 Rx1 Rx0

Figure 1. Functional diagram

Serial Clock (SCL) and Serial Data (SDA) are required for the 2-wire serial bus communication interface and enable the host to access the QSFP+ memory map.

The ResetL pin enables a complete reset, returning the settings to their default state, when a low level on the ResetL pin is held for longer than the minimum pulse length. During the execution of a reset the host shall disregard all status bits until it indicates a completion of the reset interrupt. The product indicates this by posting an IntL (Interrupt) signal with the Data_Not_Ready bit negated in the memory map. Note that on power up (including hot insertion) the module should post this completion of reset interrupt without requiring a reset.

Low Power Mode (LPMode) pin is used to set the maximum power consumption for the product in order to protect hosts that are not capable of cooling higher power modules, should such modules be accidentally inserted.

Module Present (ModPrsL) is a signal local to the host board which, in the absence of a product, is normally pulled up to the host Vcc. When the product is inserted into the connector, it completes the path to ground though a resistor on the host board and asserts the signal. ModPrsL then indicates its present by setting ModPrsL to a “Low” state.

Interrupt (IntL) is an output pin. “Low” indicates a possible operational fault or a status critical to the host system. The host identifies the source of the interrupt using the 2-wire serial interface. The IntL pin is an open collector output and must be pulled to the Host Vcc voltage on the Host board.

Absolute Maximum Ratings

Recommended Operating Conditions

Recommended Power Supply Filter

Electrical Characteristics

Electrical Characteristics – Transmitter (each lane)

Electrical Characteristics – Receiver (each lane)

Notes:

1. Power-on initialization time is the time from when the power supply voltages reach and remain above the minimum recommended operating supply voltages to the time when the moduleis fully functional.

2. The single ended input voltage tolerance is the allowable range of the instantaneous input signals.

Optical Characteristics - Transmitter

Note: Transmitter optical characteristics are measured with a single mode fiber.

Optical Characteristics - Receiver

Notes:

1. Even if the TDP < 0.8 dB, the OMA min must exceed theminimum value specified here.

2. The receiver shall be able to tolerate, without damage, continuous exposure to a modulated optical input signal having this power level on one lane. The receiver does not have to operate correctly at this input power.

3. Measured with conformance test signal at receiver inputfor BER = 1x10-12.

4. Vertical eye closure penalty and stressed eye jitter are test conditions for measuring stressed receiver sensitivity. They are not characteristics of the receiver.

Digitial Diagnostics Function

The following digital diagnostic characteristics are defined over the normal operating conditions unless otherwise specified.

Note 1: Due to measurement accuracy of different multi-mode fibers, there could be an additional ±1dB fluctuation, or ± 3dB total accuracy.

Mode-Conditioning Patch Cable

Figure 2. shows the orientation of the multi-mode facets of the optical connector.

Fiber 1

Figure 2. Optical connector

PIN Assignment and Function Definitions

PIN Assignment

PIN Definition

Notes:

1. All Ground (GND) are common within the QSFP+ module and all module voltages are referenced to this potential unless noted otherwise. Connect these directly to the host board signal common ground plane.

2. VccRx, Vcc1 and VccTx are the receiving and transmission power suppliers and shall be applied concurrently. The connector pins are each rated for a maximum current of 500mA.

Licensing

The following U.S. patents are licensed by Finisar to FluxLight, Inc.:

U.S. Patent Nos: 7,184,668, 7,079,775, 6,957,021, 7,058,310, 6,952,531, 7,162,160, 7,050,720