User`s manual

www.dfi .comChapter 3 Hardware Installation
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Chapter 3
Signal Pin# Pin Type Pwr Rail /Tolerance PU/PD Description
VGA_RED B89 O Analog Analog PD 150R Red for monitor. Analog output
VGA_GRN B91 O Analog Analog PD 150R Green for monitor. Analog output
VGA_BLU B92 O Analog Analog PD 150R Blue for monitor. Analog output
VGA_HSYNC B93 O CMOS 3.3V / 3.3V Horizontal sync output to VGA monitor
VGA_VSYNC B94 O CMOS 3.3V / 3.3V Vertical sync output to VGA monitor
VGA_I2C_CK B95 I/O OD CMOS 3.3V / 3.3V PD 2.2K to 3.3V DDC clock line (I2C port dedicated to identify VGA monitor capabilities)
VGA_I2C_DAT B96 I/O OD CMOS 3.3V / 3.3V PD 2.2K to 3.3V DDC data line.
Signal Pin# Pin Type Pwr Rail /Tolerance PU/PD Description
SER0_TX A98 O CMOS
5V / 12V(design 3.3v~5V
tolerant)
General purpose serial port 0 transmitter
SER0_RX A99 I CMOS
5V / 12V(design 3.3v~5V
tolerant
)
General purpose serial port 0 receiver
SER1_TX A101 O CMOS
5V / 12V(design 3.3v~5V
tolerant)
General purpose serial port 1 transmitter
SER1_RX A102 I CMOS
5V / 12V(design 3.3v~5V
tolerant)
General purpose serial port 1 receiver
Signal Pin# Pin Type Pwr Rail /Tolerance PU/PD Description
I2C_CK B33 I/O OD CMOS 3.3V Suspend/3.3V PU 2.2K to 3.3VSB General purpose I2C port clock output
I2C_DAT B34 I/O OD CMOS 3.3V Suspend/3.3V PU 2.2K to 3.3VSB General purpose I2C port data I/O line
SPKR B32 O CMOS 3.3V / 3.3V
Output for audio enunciator - the "speaker" in PC-AT systems.
This port provides the PC beep signal and is mostly intended for
debugging purposes.
WDT B27 O CMOS 3.3V / 3.3V Output indicating that a watchdog time-out event has occurred.
FAN_PWNOUT B101 O OD CMOS 3.3V / 12V Fan speed control. Uses the Pulse Width Modulation (PWM) technique to control the fan's RPM.
FAN_TACHIN B102 I OD CMOS 3.3V / 12V PU 10K to 3.3V Fan tachometer input for a fan with a two pulse output.
TPM_PP A96 I CMOS 3.3V / 3.3V
Trusted Platform Module (TPM) Physical Presence pin. Active high.
TPM chip has an internal pull down. This signal is used to indicate
Physical Presence to the TPM.
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Serial Interface Si
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Miscellaneous Si
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