Emerson 752I Manuel D’Utilisation

 I/O Interface

752i User’s Manual

The Zircon PM provides 24 user-definable input/output (I/O) pins. The following table 
shows how the Katana

752i implements these pins.

Table 11-1:

GPIO0

TEMP1_OS

unused

GPIO1

TEMP2_OS

unused

GPIO[2:3]

–

unused

GPIO4

750GL1_IPMI_RST_R*

active low IPMI reset input from 750GL 
processor 

GPIO5

–

unused

GPIO6

IPMI_TIMEROUT_D

unused

GPIO7

–

unused

GPIO8

POST_FAULT

active high input that signals a system 
firmware error

GPIO9

–

unused

GPIO10

I2C_holdoff

active high input that signals Zircon PM off 
the #1 I

2

C bus

GPIO11

750GL1_WD_LATCH

active high input that signals a watchdog 
expiration event on 750GL processor 

GPIO12

–

unused

GPIO13

HS_FAULT_R*

active low output that shuts power down 
to the board via the Hot Swap controller 

GPIO14

–

unused

GPIO[15:19]

GA[4:0] 

Geographical Address inputs from J2 
connector

GPIO20 –

unused

GPIO[21:23]

750GL_TEMP_INT*

unused