Dell PowerEdge M520 User Manual - Page 22

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Rev 1.0

Table 8 - SFP+ Pinout

Symbol Name

VccR

VccT

VeeT

TD+

TD-

VeeT

a. Circuit ground is internally isolated from chassis ground.

b. T

FAULT

Ohms resistor on the host board if intended for use. Pull up voltage should be between 2.0V

to Vcc + 0.3V. A high output indicates a transmitter fault caused by either the TX bias cur-

rent or the TX output power exceeding the preset alarm thresholds. A low output indicates

normal operation. In the low state, the output is pulled to <0.8V.

c. Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V

d. Should be pulled up with 4.7kΩ – 10kΩ on host board to a voltage between 2.0V and 3.6V.

MOD_ABS pulls line low to indicate module is plugged in.

e. LOS is open collector output. Should be pulled up with 4.7kΩ – 10kΩ on host board to a

voltage between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of

signal.

Receiver Power Supply

Transmitter Power Supply

Transmitter Ground (Common with Receiver Ground)

Transmitter Non-Inverted DATA in. AC Coupled.

Transmitter Inverted DATA in. AC Coupled.

Transmitter Ground (Common with Receiver Ground)

is an open collector/drain output, which should be pulled up with a 4.7k – 10k

Description