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Ref: ATGBICS_AFBR-79EQPZ-R1-C_V1

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Product Datasheet

31

LVTTL-I

LPMode

Low Power

Mode

32

GND

Ground

1

33

CML-I

Tx3p

Transmitter

Inverted

Data Output

34

CML-I

Tx3n

Transmitter

Non-

Inverted

Data Output

35

GND

Ground

1

36

CML-I

Tx1p

Transmitter

Inverted

Data Output

37

CML-I

Tx1n

Transmitter

Non-

Inverted

Data Output

38

GND

Ground

1

Notes:

1. GND is the symbol for single and supply(power) common for QSFP modules, All are common

within the QSFP module and all module voltages are referenced to this potential otherwise noted.

Connect these directly to the host board signal common ground plane. Laser output disabled on

TDIS >2.0V or open, enabled on TDIS <0.8V.

2. VccRx, Vcc1 and VccTx are the receiver and transmitter power suppliers and shall be applied

concurrently. Recommended host board power supply filtering is shown below. VccRx, Vcc1 and

VccTx may be internally connected within the QSFP transceiver module in any combination. The

connector pins are each rated for maximum current of 500mA.