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2013
congatec
AG
QMX6m03
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9.17
Miscellaneous
Table 22 Miscellaneous Signal Descriptions
Signal
Pin #
Description
I/O
PU/PD
Comment
WDTRIG#
70
Watchdog trigger signal. This signal restarts the watchdog timer of the Qseven
®
module on the falling edge of a low active pulse.
I 3.3V
Connected to GPIO
WDOUT
72
Watchdog event indicator. High active output used for signaling a missing watchdog
trigger. Will be deasserted by software, system reset or a system power down.
O 3.3V
Connected to GPIO
GP0_I2C_CLK
66
General Purpose I²C bus #0 clock line
I/O 3.3V OD PU 4k7 3.3V
GP0_I2C_DAT
68
General Purpose I²C bus #0 data line
I/O 3.3V OD PU 4k7 3.3V
SMB_CLK
/GP1_I2C_CLK
60
Clock line of System Management Bus.
Multiplexed with General Purpose I²C bus #1 clock line
I/O 3.3VSB
OD
PU 4k7 3.3V Connected to I2C
SMB_DAT
/GP1_I2C_DAT
62
Data line of System Management Bus.
Multiplexed with General Purpose I²C bus #1 data line
I/O 3.3VSB
OD
PU 4k7 3.3V Connected to I2C
SMB_ALERT#
64
System Management Bus Alert input. This signal may be driven low by SMB
devices to signal an event on the SM Bus.
I/O 3.3VSB
OD
PU 10k 3.3V Connected to GPIO.
SPKR
/GP_PWM_OUT2
194
Primary functionality is output for audio enunciator, the “speaker” in PC AT systems.
When not in use for this primary purpose it can be used as General Purpose PWM
Output.
O 3.3V
Not supported.
BIOS_DISABLE#
/BOOT_ALT#
41
Pin is used to select Boot mode.
I 3.3V
PU 4k7 3.3V
RSVD
56,132,134,144,
146,154
Do not connect
NC
GP_1-Wire_Bus
124
General Purpose 1-Wire bus interface. Can be used for consumer electronics
control bus (CEC) of HDMI.
I/O 3.3V
Currently implemented
as HDMI Consumer
Electronics Control
Bus.
