
Product Overview
Intel® Server Board SE7520BD2 Technical Product Specification
22
Revision
1.3
All unused GPI pins must be pulled high or low, so that they are at a predefined level and do not
cause undue side effects.
Additional notes:
•
GPIO 0:15 sticky bits on input, level triggered, 61 usec min time for latch
•
GPI’s only: 0:15, 40-47 (note 42-47 unimplemented)
•
GPO’s only: 16-23, 48-55 (note 49-55 unimplemented)
•
GPI or GPO: 24-39 (note 35-39 unimplemented, GPIO[33] is changed to S-ATA LED
and this GPIO is NOT available)
•
GPIO resume power well: 8-15, 24-25, 27-28
•
GPIO core power well: 0-7, 16-23, 32-34, 40-41, 48
Table 6. GPIO on the Intel® Server Board SE7520BD2
ICH5-R Signal
Type
Pin
PWR Well
Tolerant
Intel® Server Board SE7520BD2 Usage
INTRUDER DETECT
Input
Y12
Core
3.3V
TP
GPI0/REQA
Input
A5
Core
5V
Board SKU 0
GPI1/REQB/REQ5#
Input
E7
Core
5V
Board SKU 1
GPI6/AGPBUSY#
Input
R5
Core
5V
Bios Recover Boot
GPI7 Input
U3
Core
5V
MCH
PME
GPI8 Input
Y2
Resume
3.3V
WAKE#/PCI
PME#
GPI9/OC[4]# Input
B14
Resume
3.3V
Reserved for USB OC4 (3 in back, 2 in
front)
GPI10/OC[5]#
Input
A14
Resume
3.3V
PERR# for PCI 32bit/33Mhz slot
GPI11/SMBALERT#
Input
AC3
Resume
3.3V
Board ID 0
GPI12 Input
W4
Resume
3.3V
SIO
SMI
GPI13 Input
W5
Resume
3.3V
BMC
IRQ
SMI
GPI14/OC[6]#
Input
D13
Resume
3.3V
SIO > ICH5-R PME
GPI15/OC[7]# Input
C13
Resume
3.3V
Password
clear
GPO16/GNTA# Output
E8
Core
3.3V
TP
GPO17/GNTB#/GNT[5]# Output B4 Core
3.3V
TP
GPO18/STP_PCI# Output
U21
Core 3.3V
TP
GPO19/SLP_S1#
Output
T20
Core
3.3V
PWRGD Toggle (for PLL Select) TP
GPO20/STP_CPU# Output
U22
Core 3.3V
Video
Disable
GPO21/C3_STAT# Output
R1
Core 3.3V
SCSI
Disable
GPO22/CPUPERF# Output
U20
Core 3.3V TP
GPO23/SSMUXSEL# Output
F22
Core
3.3V
Legend connector
POST complete Indicator
GPIO24/CLKRUN#
I/O
AC1
Resume
3.3V
Board ID 1
GPIO25
I/O
W3
Resume
3.3V
Board ID 2
GPIO27 I/O
V3
Resume
3.3V
TP
GPIO28
I/O
W2
Resume
3.3V
SM Module Present
GPIO32
I/O
T1
Core
3.3V
Board SKU 2
GPIO34
I/O
F21
Core
3.3V
IDE Primary Cable Sense
GPI40/REQ4# Input
C6
Core
3.3V
CMOS
Clear
GPI41/LDRQ1# Input
R2
Core
3.3V
Emergency
Bank
Select