Evido EAD-D2000 Instrukcja Użytkownika Pobierz pdf (Strona 33)

CT-CCV6X Intel Atom D2000/N2000 COM Express Type 6 Module

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4.16.2.5 PSUEDO CODE

Example 1 Change GPIO2 from output to input

Step1: ByteData = ReadIOByte(0x504) //Read current setting from

configuration register

Step2: ByteData = ByteData | Bit 4 //Set Bit4 1. It means input

Step3: WriteIOByte(0x504, ByteData) //Write back to configuration register

Example2 Set GPIO3 to output LOW

Step1: ByteData = ReadIOByte(0x50C) //Read current setting from Output

Port register

Step2: ByteData =ByteData & 0xDF //Set Bit5 0. It means output low

Step3: WriteIOByte(0x50C, ByteData) //Write back to Output Port

4.17 Power and System Management Signals

Signal

I/O

Description

SUS_S3#

Indicates system is suspended to RAM state.

Active low output.

SUS_S4#

Indicates system is suspended to Disk state.

Active low output.

SUS_S5#

Indicates system is in Soft Off state.

SUS_STAT#

Indicates imminent suspend operation.

PWRBTN#

Power button to bring system out of S5 (soft off),

active on rising edge.

PWR_OK

Power OK from main power supply

BATLOW#

Indicates that external battery is low.

SYS_RESET#

Reset button input. Active low input.

CB_RESET#

Carrier Board Reset. Active low input.

WAKE0#

PCI Express wake up signal.

WAKE1#

General purpose wake up signal.

VCC_RTC

RTC External Battery

LID#

LID switch

SLEEP#

Sleep Button

FAN_PWMOUT

FAN PWM out

FAN_TACHIN

Fan Tacho in

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 65 66

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