PC8374T datasheet(14/48 Pages) NSC

14 / 48 page

1.0 Signal/Pin Connection and Description (Continued)

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Revision 1.1

1.4.8

Health Management (HM)

1.4.9

Trusted Platform Module (TPM)

1.4.10 System Wake-Up Control (SWC)

Signal

Pin(s)

I/O Buffer Type Power Well

Description

SWD

103

I/O

INSM/OD6

VSB3

SensorPath Data. Bidirectional, SensorPath Data interface

signal to LMxx sensor device(s). An internal pull-up for this pin

is optional.

HMSCL

I/O

INSM/OD6

VSB3

Health Management SMBus Serial Clock. Serial clock

signal. External pull-up resistor is required.

HMSDA

I/O

INSM/OD6

VSB3

Health Management SMBus Serial Data. Serial data signal.

External pull-up resistor is required.

FANTACH1-4 111-112,

104-105

IINTS

VDD3

Fan Inputs. Used to feed the fan’s tachometer pulse to the

Fan Speed Monitor.

FANPWM1-3 106,

108-109

OOD12,O6/12

VDD3

Fan Outputs. Pulse Width Modulation (PWM) signals, used to

control the speed of cooling fans by controlling the voltage

supplied to the fan motors.

Signal

Pin(s)

I/O Buffer Type Power Well

Description

TPM_PP

123

INTS

VSB3

Physical Presence Input. Indicates owner’s physical presence.

IOPA0,

IOPA1,

IOPA6

101,

91,

123

I/O

INTS/

OD8, O4/8

VSB3

General-Purpose I/O Ports. Each pin is configured

independently as input or I/O, with or without static pull-up and

with either open-drain or push-pull output type. These pins

have event detection capability to generate a wake-up event

or an interrupt.

Signal

Pin(s)

I/O Buffer Type Power Well

Description

GPIOE00-07

103-106,

108-109,

111-112

INTS

VSB3

Wake-Up Inputs. Generates a wake-up event. These pins

have programmable debouncing. When the pin is not used,

the internal pull-up resistor must be enabled to allow the pin

to be left not connected.

118-121,

124,

126-128

VDD3

GPIOE10-13

116, 114,

115, 113

INTS2

VSB3

GPIOE12-13

74-75

INTS

GPIOE14,

GPIOE16-17

101,

100, 80

RI1

RI2

32,

118 or

119

IINTS

VSB3

Ring Indicator Wake-Up. When low, generates a wake-up

event, indicating that a telephone ring signal was received by

the modem.

KBCLK

INTS

VSB3

Keyboard Clock Wake-Up. Generates a wake-up event when

a specific keyboard sequence is detected.

KBDAT

INTS

VSB3

Keyboard Data Wake-Up. Generates a wake-up event when

a specific keyboard sequence is detected.

MCLK

INTS

VSB3

Mouse Clock Wake-Up. Generates a wake-up event when a

specific mouse action is detected.

PC8374T Datasheet(PDF) 14 Page - National Semiconductor (TI)

PC8374T Datasheet(HTML) 14 Page - National Semiconductor (TI)

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