MiTAC 7521 PLUS/N - Manual (Page 95)

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7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE
5. Pin Descriptions Of Major Components
5.2 SiS630S Slot 1/Socket 370 2D/3D Ultra-AGP™ Single Chipset
Power management Interface
Name Tolerance Power
Plane
Type
Attr
Description
THERM# 3.3V/5V MAIN I Thermal Detect : THERM# is connected to the
internal ACPI-compatible power management
unit as an indication of outstanding thermal event.
An active THERM# event can be used to generate
SCI/SMI#/GPEIRQ. If THERM# is activated for
more than 2 second, a thermal override event will
occur and the system will enter CPU thermal
throttling mode automatically.
GPIO[6:4] 3.3V/5V AUX I/O/OD General Purpose Input/Output [6:4]: Refer to GPIO
description.
SMBus Interface
Name Tolerance Power
Plane
Type
Attr
Description
SMBDAT
I2CDAT 3.3V/5V MAIN I/OD
I/OD SMBus Data : SMBus data input/output pin.
I2C Data : I2C data input/output pin.
SMCLK
I2CCLK 3.3V/5V MAIN I/OD
I/OD SMBus Clock : SMBus clock input/output pin.
I2C Clock : I2C clock input/output pin.
SMBALT#
I2CALT#
GPIO15 3.3V/5V AUX I/OD
I/OD
I/O/OD
SMBus Alert : This pin is used for SMBus device to
wake up the system from sleep state or to generate
SCI/SMI#/GPEIRQ.
I2C Alert : This pin is used for I2C device to wake
up the system from sleep state or to generate
SCI/SMI#/GPEIRQ.
General Purpose Input/Output 15 : Refer to GPIO
description.
Keyboard controller Interface
Name Tolerance Power
Plane
Type
Attr
Description
KBDAT
GPIO10 3.3V/5V AUX I/OD
I/O/OD
Keyboard Dada : When the internal keyboard
controller is enabled, this pin is used as the keyboard
data signal.
General Purpose Input/Output 10 : Refer to GPIO
description.
KBCLK
GPIO11 3.3V/5V AUX I/OD
I/O/OD
Keyboard Clock : When the internal keyboard
controller is enabled, this pin is used as the keyboard
clock signal. General Purpose Input/Output 11 :
Refer to GPIO description.
Name Tolerance Power
Plane
Type
Attr
Description
PMDAT
GPIO12 3.3V/5V AUX I/OD
I/O/OD
PS2 Mouse Data: When the internal keyboard and PS2 mouse controllers are
enabled, this pin is
used as PS2 mouse data signal.
General Purpose Input/Output 12 : Refer to GPIO description.
PMCLK
GPIO13 3.3V/5V AUX I/OD
I/O/OD
PS2 Mouse Clock: When the internal keyboard and PS2 mouse controllers are
enabled, this pin is used as the PS2 mouse clock signal.
General Purpose Input/Output 13 : Refer to GPIO description.
KLOCK#
GPIO14 3.3V/5V AUX I
I/O/OD
Keyboard Lock: When KLOCK# is tied low, the internal keyboard controller
will not respond to
any key-strikes.
General Purpose Input/Output 14 : Refer to GPIO description.
LPC Interface
Name Tolerance Power
Plane
Type
Attr
Description
LAD[3:0] 3.3V/5V MAIN I/O LPC Address/Data Bus : LPC controller drives these four pins to transmit LPC
command, address,
and data to LPC device.
LDRQ# 3.3V/5V MAIN I LPC DMA Request 0: This pin is used by LPC device to request DMA cycle.
LFRAME# 3.3V MAIN O LPC Frame : This pin is used to notify LPC device
that a start or a abort LPC cycle will occur.
SIRQ 3.3V/5V MAIN I/OD Serial IRQ : This signal is used as the serial IRQ
line signal.