Filter
Top Products
User Guide XB1 COM Express Module
©EKF -27- ekf.com
GPIO Usage
GPIO Usage ICH6
XB1 COM Express Module GPIO Usage ICH6
GPIO Type Tol. Function Description
GPI 0 I 5V EXCD1_CPPE# PCI ExpressCard PCI Express capable card 1 request
GPI 1 I 5V EXCD0_CPPE# PCI ExpressCard PCI Express capable card 0 request
GPI 2 I 5V PG_VR33 Power Good signal from 3.3V voltage regulator
GPI 3 I 5V WAKE1# General purpose wake up signal from carrier board
GPI 4 I 5V PWR_OK Power OK from main power supply
GPI 5 I 5V BATLOW# Indicates that external battery is low
GPI 6 I 3.3V GP_JUMP# BIOS CMOS Values Reset Jumper JGP
GPI 7 I 3.3V HM_INT# Hardware Monitor LM87 Interrupt Line
GPI 8 I 3.3V I2C_DAT I
2
C emulated data signal (input only, see also GPIO 28)
GPI 9 I 3.3V USB_OC45# USB Ports 4 & 5 Overcurrent Detect Line (GPI9/10 joined)
GPI 10 I 3.3V USB_OC45# USB Ports 4 & 5 Overcurrent Detect Line (GPI9/10 joined)
GPI 11 I 3.3V SMB_ALERT# System Management Bus Alert
GPI 12 I 3.3V PEG_ENABLE# If pulled low externally, enables the PCI Express x 16 external
graphics interface and disables internal graphics (internally
pulled up 10k/3.3V)
GPI 13 I 3.3V I2C_CK I
2
C emulated clock signal (input only, see also GPIO 27)
GPI 14 I 3.3V USB_OC67# USB Ports 6 & 7 Overcurrent Detect Line (GPI14/15 joined)
GPI 15 I 3.3V USB_OC67# USB Ports 6 & 7 Overcurrent Detect Line (GPI14/15 joined)
GPO 16 O 3.3V EXCD1_RST# PCI ExpressCard reset card 1
GPO 17 O 3.3V EXCD0_RST# PCI ExpressCard reset card 0
GPO 18 O 3.3V ICH_GPO18 Control output to PLD
GPO 19 O 3.3V ICH_GPO19 Control output to PLD
GPO 20 O 3.3V ICH_GPO20 Control output to PLD
GPO 21 O 3.3V ICH_GPO21 Control output to PLD
GPO 23 O 3.3V not used - open
GPIO 24 I/O 3.3V ICH_GPIO24 for future use as PLD control signal (either input or output)
GPIO 25 O 3.3V not used - open (configured as output by BIOS)
GPI 26 I 3.3V CLK_64HZ 64Hz clock from 4040 binary counter
GPIO 27 O 3.3V I2C_CK I
2
C emulated clock signal (output only, see also GPI 13)
GPIO 28 O 3.3V I2C_DAT I
2
C emulated data signal (output only, see also GPI 8)
GPI 29 I 3.3V BOARD_CFG1 Board configuration options line 1