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Table 3-21: miscellaneous pin assignment – IEI Integration ICE-DB-T6 User Manual

Page 73

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Type 6 Carrier Board Design Guide

Page 63

"PS_ON" and can be used to control an ATX power supply.

B66

WAKE0#

I CMOS

PCI Express wake up signal.

B67 WAKE1#

I CMOS General purpose wake up signal. May be used to

implement wake-up on PS2 keyboard or mouse activity.

A27

BATLOW#

I CMOS

Indicates that external battery is low.

B35

THRM#

I CMOS

Input from off-module temp sensor indicating an over-temp
situation.

A35

THERMTRIP#

O CMOS

Active low output indicating that the CPU has entered
thermal shutdown.

B102

FAN_TACHOIN

I CMOS

0V~5V Fan Tachometer Input

B101

FAN_PWMOUT

O CMOS

Fan Speed Control PWM Control

B13
B14

SMB_C
SMB_DAT

I/O 3.3V
OD
CMOS

System Management Bus (SMBus) is used by the COM
Express module for memory configuration and clock
synthesizer configuration. It is also used by the external
PCI Express slots and ExpressCard slots.

B15 SMB_ALERT#

I

3.3V

CMOS

The SMBus alert signal used by the SMBus slave to inform
the SMBus master " Optional signal used by the SMBus
slave. that a slave transaction is pending.

B33
B34

I2C_CK
I2C_DAT

I/O 3.3V
CMOS

General purpose I2C bus for common usage on the carrier
board.

B32 SPKR

O CMOS

Output for audio enunciator - the "speaker" in PC-AT
systems

A34

BIOS_DISABLE#

I CMOS

Module BIOS disable input. Pull low to disable module
BIOS. Used to allow off-module BIOS implementations.

B88 BIOS_DIS1#

I

CMOS Selection

straps to determine the BIOS boot device. The

Carrier should only float these or pull them low.

B27 WDT

O CMOS

Output indicating that a watchdog time-out event has
occurred.

A54
A63
A67
A85

GPI0
GPI1
GPI2
GPI3

I CMOS

General purpose input pins.

A93
B54
B57
B63

GPO0
GPO1
GPO2
GPO3

O CMOS

General purpose output pins.

A91

SPI_VCC

O 3.3V

BIOS flash interface

A92

SPI_MISO

O CMOS

Data in to Module from Carrier SPI

A94

SPI_CLK

O CMOS

Clock from Module to Carrier SPI

A95

SPI_MOSI

O CMOS

Data out from Module to Carrier SPI

B97

SPI_CS#

O CMOS

Chip select for carrier board SPI

A96

PP_TPM

I CMOS

Trusted Platform Module (TPM). Active high. TPM chip has
an internal pull down. This signal is used to indicate
Physical Presence to the TPM.

A98 RS1_TX

O

UART

A99 RS1_RX

I

UART

A101 RS2_TX

O

UART

A102 RS2_RX

I

UART

Table 3-21: Miscellaneous Pin Assignment