User Guide CCM-BOOGIE • High Performance Core
TM
2 Duo 3U
CompactPCI
®
CPU Board
© EKF -56- ekf.com
GPIO Usage
GPIO Usage ICH9
CCM-BOOGIE GPIO Usage ICH9
GPIO
Type
Tol.
Function
Description
GPIO 0
I/O
3.3V
PMSYNC#
Multiplexed with chipset internal function
GPIO 1
I
3.3V
EXP_SMI#
Expansion Interface SMI Request (J_EXP Pin 15)
GPIO 2
I
5V
CPCI_INTP
CompactPCI Interrupt Request Line INTP
GPIO 3
I
5V
CPCI_ENUM#
CompactPCI System Enumeration Line ENUM#
GPIO 4
I
5V
CPCI_FAL#
CompactPCI Power Failure Line FAL#
GPIO 5
I
5V
CPCI_DEG#
CompactPCI Power Degeneration Line DEG#
GPIO 6
O
3.3V
CPCI_INTS_EN
Connect SERIRQ to CompactPCI Line INTS
LOW: SERIRQ disconnected from INTS
HIGH: SERIRQ connected to INTS
GPIO 7
I
3.3V
CPCI_SYSEN#
Sense CompactPCI System Slot Enable Line SYSEN#
GPIO 8
I
3.3V
HM_INT#
Hardware Monitor LM87 Interrupt Line
GPIO 9
I/O
3.3V
N/A
Not used on CCM (fixed via resistor to GND)
GPIO 10
I
3.3V
N/A
Not used on CCM (fixed via resistor to +3.3V)
GPIO 11
I
3.3V
GP_JUMP#
BIOS CMOS Values Reset Jumper P_GP
GPIO 12
I
3.3V
N/A
Not used on CCM (fixed via resistor to GND)
GPIO 13
I
3.3V
N/A
Not used on CCM (fixed via resistor to GND)
GPIO 14
I
3.3V
N/A
Not used on CCM (fixed via resistor to +3.3V)
GPIO 15
O
3.3V
STP_PCI#
Fixed to chipset internal function
GPIO 16
O
3.3V
DPRSLPVR
Multiplexed with chipset internal function
GPIO 17
O
3.3V
CPCI_CLKEN
Enable CompactPCI Clock Buffer
GPIO 18
O
3.3V
GP_LED_RED
General Purpose LED Control (via PLD)
GPIO 19
O
3.3V
PLD_SCL
Local Option Reg Interface (within PLD)
GPIO 20
O
3.3V
SE_SYS_WP
General Purpose Serial EEPROM Write Protection
GPIO 21
O
3.3V
PLD_SDA
Local Option Reg Interface (within PLD)
GPIO 22
I
3.3V
HWREV2
PCB Revision Code Bit 2 (see GPIO 34)
GPIO 23
I
3.3V
LPC_DRQEXP#
Expansion Interface LPC DMA Request Line
GPIO 24
O
3.3V
CPCI_SMB_EN
Connect SMBus of CPCI IPMB/J_EXP to local SMBus
LOW: IPMB/J_EXP disconnected from SMBus
HIGH: IPMB/J_EXP connected to SMBus
GPIO 25
O
3.3V
STP_CPU#
Fixed to chipset internal function
GPIO 26
O
3.3V
N/A
Multiplexed to chipset internal function
GPIO 27
O
3.3V
VGA_SWITCH
VGA Switching Line:
LOW: VGA via Rear I/O
HIGH: VGA via Front I/O
