Table 31 Power And System Management Signal Descriptions - Congatec COM Express conga-TS175 User Manual

Signal Pin # Description
GPI0 A54 General purpose input pins. Pulled high internally on the module.
Shared with SD_DATA0. Bidirectional signal
GPI1 A63 General purpose input pins. Pulled high internally on the module.
Shared with SD_DATA1. Bidirectional signal
GPI2 A67 General purpose input pins. Pulled high internally on the module.
Shared with SD_DATA2. Bidirectional signal
GPI3 A85 General purpose input pins. Pulled high internally on the module.
Shared with SD_DATA3. Bidirectional signal.
Note
The conga-TS175 provides GPIO signals on the COM Express connector by default.

Table 31 Power and System Management Signal Descriptions

Signal Pin # Description
PWRBTN# B12 Power button to bring system out of S5 (soft off), active on falling edge.
Note: For proper detection, assert a pulse width of at least 16 ms.
SYS_RESET# B49 Reset button input. Active low input. Edge triggered.
System will not be held in hardware reset while this input is kept low.
Note: For proper detection, assert a pulse width of at least 16 ms.
CB_RESET# B50 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 B24 Power OK from main power supply. A high value indicates that the power is good.
SUS_STAT# B18 Indicates imminent suspend operation; used to notify LPC devices.
SUS_S3# A15 Indicates system is in Suspend to RAM state. Active-low output. An inverted copy of SUS_S3# on
the carrier board (also known as "PS_ON") may be used to enable the non-standby power on a
typical ATX power supply.
SUS_S4# A18 Indicates system is in Suspend to Disk state. Active low output.
SUS_S5# A24 Indicates system is in Soft Off state.
WAKE0# B66 PCI Express wake up signal.
WAKE1# B67 General purpose wake up signal. May be used to implement wake-up on PS/2 keyboard or
mouse activity.
BATLOW# A27 Battery low input. This signal may be driven low by external circuitry to signal that the system
battery is low, or may be used to signal some other external power-management event.
THRM# B35 Input from off-module temp sensor indicating an over-temp situation.
THERMTRIP# A35 Active low output indicating that the CPU has entered thermal shutdown.
SMB_CK B13 System Management Bus bidirectional clock line.
Copyright © 2017 congatec AG
I/O PU/PD Comment
I 3.3V PU 10K 3.3V
I 3.3V PU 10K 3.3V
I 3.3V PU 10K 3.3V
I 3.3V PU 10K 3.3V
I/O
I 3.3VSB
I 3.3VSB
O 3.3V
I 3.3V
O 3.3VSB
O 3.3VSB
O 3.3VSB
O 3.3VSB
I 3.3VSB
I 3.3VSB
I 3.3VSB
I 3.3V
O 3.3V
I/O 3.3VSB
TSKLm16
PU/PD Comment
PU 10k 3.3VSB
PU 10k 3.3VSB
PD 100k
Set by resistor divider
to accept 3.3V.
Not supported
PU 1k 3.3VSB
PU 10k 3.3VSB
PU 8k2 3.3VSB
PU 10k 3.3V
PU 10k 3.3V
PU 2k2 3.3VSB
63/71