IEI Integration ICE-DB-9S - Manual (Page 95)

ICE Module
Page 82
4.14 Miscellaneous
This section describes some signals which are not described above, including PI[3:0],
GPO[3:0], Watch Dog Timer, Speaker Out, System Reset, Carrier Board Reset,
Suspend Control, Power Good, Smart Fan Control,I2C Data, Alert#.
4.14.1 Signal Description
Table 4-24: Miscellaneous pin assignment
Pin Signal I/O Description
B12 PWRBTN# I CMOS Power button to bring system out of S5 (soft off), active on
rising edge.
B49 SYS_RESET# I CMOS Reset button input. Active low input. System is held in
hardware reset while this input is low, and comes out of
reset upon release.
B50 CB_RESET# O CMOS Reset output from module to Carrier Board. Active low.
Issued by module chipset and may result from a low
SYS_RESET# input, a low PWR_OK input, a VCC_12V
power input that falls below the minimum specification, a
watchdog timeout, or may be initiated by the module
software.
PWR_OK I CMOS Power OK from main power supply. A high value indicates
that the power
B18 SUS_STAT# O CMOS Indicates imminent suspend operation; used to notify LPC
devices.
A15 PM_SLP_S3# O CMOS Indicates system is in Suspend to RAM state. Active low
output.
A18 PM_SLP_S4# O CMOS Indicates system is in Suspend to Disk state. Active low
output.
A24 PM_SLP_S5# O CMOS Indicates system is in Soft Off state. Also known as
"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.
C77 FAN_TACHOIN I CMOS 0V~5V Fan Tachometer Input
C67 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.
B33
B34 I2C_CK
I2C_DAT I/O 3.3V
CMOS General purpose I2C bus for common usage on the carrier
board.
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.
B32 SPKR O CMOS Output for audio enunciator - the "speaker" in PC-AT