Manual

AT8902M Hardware Description

Page 3 - 24 AT8902M User Guide

Fabric Interface Uplink

The mezzanine supports four fabric interface uplinks to the front panel of the Hub Board. The

switch is connected to the RJ45 connector with integrated status LEDs on the front panel via a

quad PHY and two 10/100/1000BASE-T dual magnetics. GbE channel 0/1 to 0/4 of the switch

maps to uplink channel 1 to 4.

The standard RJ45 connector has the following pin assignment:

Table 3-22: Fabric Uplink (J40/J41) LEDs Signification

Table 3-21: Fabric Uplink (J40/J41) Pin Assignment

Signal Pin

DB+ 1

DB- 2

DA+ 3

DD+ 4

DD- 5

DA- 6

DC+ 7

DC- 8

Speed LED (yellow)

OFF 10BASE-T

BLINK 100BASE-TX

ON 1000BASE-T

Status LED (green)

OFF Link Down

ON Link Up and no activity

BLINK Link Up and activity

Yellow

Green

Yellow

Green