Example Gigabit I/O Applications; Front Panel Multi-Gigabit I/O Control & Status Signals; Table 7 Board Control Signals; Table 8 Optical Module Control Signals - Alpha Data ADM-XRC-5T2-ADV User Manual

4.7.2.1. Important Notes on using Optical Modules
Optical modules provide a signal ('sense_l') indicating that they are present; however the
presence of optical modules cannot be distinguished from a copper connection by relying on
this signal alone.
Whilst the optical module supplies are disabled by default and protected by current limiting,
the method shown in the example code should always be used to ensure that supplies do not
drive into the short circuit presented when a copper cable is fitted.
Caution
This equipment uses Class 1 Laser devices; such devices are not considered to be
hazardous when used for their intended purpose. Use of controls, adjustments or
performance of procedures other than those specified herein may result in hazardous
laser light exposure.

4.7.3. Example Gigabit I/O Applications

•
Dual Infiniband 4x ( 4 lanes at 2.5Gb/s over copper or optical fibre)
•
Dual 10Gb/s Ethernet CX4 ( 4 lanes at 3.125Gb/s over copper or optical fibre)
•
Dual 10Gb/s FibreChannel ( 4 lanes at 3.1875Gb/s over copper or optical fibre)
•
Dual 4 x OC-48 SONET
4.7.4. Front Panel multi-gigabit I/O Control & Status Signals
Signal
BREFCK_ENA
B
STATUS_1
ATTEN_1
STATUS_2
ATTEN_2
Signal FCN Pin
SENSE G7
FAULT G6
ODIS G2
PSUEN G8 (3V3
Pwr)
OC_L -
ADM-XRC-5T2-ADV User Manual
Version 1.0
Page 12
Pin
Location
AC38
AC40
AM42
AC39
AM41

Table 7 Board Control Signals

Connector 1 (J5)
FPGA Pin
AR5
AT6
AT7
AP7
AP5

Table 8 Optical Module Control Signals

ADM-XRC-5T2-ADV User Manual
Description
-high to enable the 156.25MHz oscillator on the
board (pull-up on board)
-Infiniband STATUS led (yellow) connector 1
-Infiniband ATTEN led (green) connector 1
-Infiniband STATUS led (yellow) connector 2
-Infiniband ATTEN led (green) connector 2
Connector 2 (J4) Description
FPGA Pin
AM6 low indicates that an opto module
has been fitted
AN5 low indicates that no data detected
on the opto Rx channel
AN6 low to disable Tx on any module
fitted on the channel
AP6 high to enable the opto power
supply
AL7 low indicates overcurrent on opto
supply