User's Manual l TQMx50UC UM 0101 l © 2018 TQ-Group
Page 17
Table 10:
COM Express™ Connector Pin Assignment (continued)
Pin
Pin-Signal
Description
Type
Remark
B1
GND(FIXED)
Ground
GND
B2
GBE0_ACT#
Gigabit Ethernet Controller 0 active indicator
OD
B3
LPC_FRAME#
LPC frame indicates the start of an LPC cycle
I/O
B4
LPC_AD0
LPC multiplexed address, command and data bus
I/O
B5
LPC_AD1
LPC multiplexed address, command and data bus
I/O
B6
LPC_AD2
LPC multiplexed address, command and data bus
I/O
B7
LPC_AD3
LPC multiplexed address, command and data bus
I/O
B8
(LPC_DRQ0#) GPIO
LPC serial DMA request
I/O
N/A TQ-flexiCFG
B9
(LPC_DRQ1#) GPIO
LPC serial DMA request
I/O
N/A TQ-flexiCFG
B10
LPC_CLK
LPC clock output
O
B11
GND(FIXED)
Ground
GND
B12
PWRBTN#
Power button input
I PU
TQ-flexiCFG
B13
SMB_CK
System Management Bus bidirectional clock line
I/O
B14
SMB_DAT
System Management Bus bidirectional data line
I/O
B15
SMB_ALERT#
System Management Bus Alert
I PU
B16
S
SATA differential transmit pairs
O
B17
SATA1_TX–
SATA differential transmit pairs
O
B18
SUS_STAT#
Indicates imminent suspend operation
O
B19
S
SATA differential receive pairs
I
B20
SATA1_RX–
SATA differential receive pairs
I
B21
GND(FIXED)
Ground
GND
B22
S
SATA differential transmit pairs
O
B23
SATA3_TX–
SATA differential transmit pairs
O
B24
PWR_OK
Power OK from main power supply
I PU
TQ-flexiCFG
B25
S
SATA differential receive pairs
I
B26
SATA3_RX–
SATA differential receive pairs
I
B27
WDT
watchdog time-out
O
TQ-flexiCFG
B28
AC/HDA_SDIN2
Serial TDM data input
I PU
N/A
B29
AC/HDA_SDIN1
Serial TDM data input
I PU
B30
AC/HDA_SDIN0
Serial TDM data input
I PU
B31
GND(FIXED)
Ground
GND
B32
SPKR
PC Audio Speaker output
O
B33
I2C_CK
General purpose I2C port clock output
I/O
TQ-flexiCFG
B34
I2C_DAT
General purpose I2C port data I/O line
I/O
TQ-flexiCFG
B35
THRM#
Input from carrier temperature sensor
I PU
B36
USB7–
USB differential pairs
I/O
B37
USB7+
USB differential pairs
I/O
B38
USB_4_5_OC#
USB over-current sense, USB channels 4 and 5
I PU
B39
USB5–
USB differential pairs
I/O
B40
USB5+
USB differential pairs
I/O
B41
GND(FIXED)
Ground
GND
B42
USB3–
USB differential pairs
I/O
B43
USB3+
USB differential pairs
I/O
B44
USB_0_1_OC#
USB over-current sense, USB channels 0 and 1
I PU
B45
USB1–
USB differential pairs
I/O
B46
USB1+
USB differential pairs
I/O
B47
EXCD1_PERST#
PCI ExpressCard: reset, active low, one per card
O
TQ-flexiCFG
B48
EXCD1_CPPE#
PCI ExpressCard: PCI Express capable card request, active low
I PU
TQ-flexiCFG
B49
SYS_RESET#
Reset button input
I PU
TQ-flexiCFG
B50
CB_RESET#
Reset output from TQMx50UC to Carrier Board
O
TQ-flexiCFG
B51
GND(FIXED)
Ground
GND
B52
P
PCI Express differential receive pairs
I
N/A
B53
PCIE_RX5–
PCI Express differential receive pairs
I
N/A
B54
GPO1/SD_CMD
GPO1 / SDIO Command
O PD TQ-flexiCFG
B55
P
PCI Express differential receive pairs
I
N/A