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MSC C6C-AL
MSC C6C-AL User Manual
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2.12.10 Serial Interface Signals
Signal
Pin
Type
Signal
Level
Power
Rail
Remark /
Tolerance
PU/PD/SR
Description
Source /
Target
SER0_TX
O
CMOS 3.3V
12V, 7mA
General purpose serial port transmitter (output)
AL SOC
SER0_RX
I
CMOS 3.3V
12V
ePU = 47 KΩ General purpose serial port receiver (input)
AL SOC
SER1_TX
O
CMOS 3.3V
12V, 7mA
General purpose input serial port transmitter (output)
AL SOC
SER1_RX
I
CMOS 3.3V
12V
ePU = 47 KΩ General purpose serial port receiver (input)
AL SOC
NOTICE: Functionality based on the 16550 and 16750 industry standards. HSUART Slave Mode is not supported. Serial Infrared (SIR) per the
Infrared Data Association (IrDA) 1.0 is not supported.
2.12.11 Miscellaneous
Signal
Pin
Type
Signal
Level
Power
Rail
Remark /
Tolerance
PU/PD/SR
Description
Source / Target
I2C_CK
I/O
CMOS 3.3V Sus 3.3V
ePU = 2.2
KΩ General purpose I2C port clock output
AL SOC
I2C_DAT
I/O
CMOS 3.3V Sus 3.3V
ePU = 2.2
KΩ General purpose I2C port data I/O line
AL SOC
SPKR
O
CMOS 3.3V
3.3V, 7mA
Output for audio enunciator - the "speaker" in PC-AT systems
AL SOC
BIOS_DIS[1]#
I
CMOS 3.3V
ePU = 10 KΩ Module BIOS disable input
BIOS_DIS[0]#
I
CMOS 3.3V
ePU = 10 KΩ Module BIOS disable input, not connected
WDT
O
CMOS 3.3V
ePD = 10 KΩ Active high output indicating that a watchdog time-out has occurred. Embedded
Controller
FAN_PWMOUT
O
CMOS 3.3V
Fan speed control. Uses the Pulse Width Modulation (PWM)
technique to control the fan’s RPM.
Embedded
Controller
FAN_TACHIN
I
CMOS 3.3V
ePU = 10
KΩ Fan tachometer input for a fan with a two pulse output.
Embedded
Controller
TPM_PP
I
CMOS 3.3V
3.3V
ePD = 4.7 KΩ Trusted Platform Module (TPM) Physical Presence pin. Active high. TPM
NOTICE:
COM Express Specification R2.1 redefines the I2C bus to be in the suspend plane 3.3V_SUS rather than in the 3.3V plane.