Intel ESM-APLC, User Manual

Page: 25 / 84

ESM-APLC User
’s Manual
ESM-APLC User
’s Manual
25
2.4.2.1.4 Flat Panel LVDS Signals
Signal Signal Description
LVDS_BKLT_CTRL Controls panel digital power.
ENBKL# Controls backlight power enable.
LVDS_I2C_CK I2C clock output for LVDS display use.
LVDS_I2C_DAT I2C data line for LVDS display use.
LVDS_A[0:3] +/- LVDS Channel A differential pairs.
LVDS_B[0:3] +/- LVDS Channel B differential pairs.
LVDS_VDD_EN LVDS panel power enables.
LVD/- LVDS Channel A differential clock.
LVD/- LVDS Channel A differential clock.
2.4.2.1.5 LPC Signals
Signal Signal Description
LPC_FRAME# LPC frame indicates the start of an LPC cycle
LPC_AD[0:3] LPC multiplexed address, command and data bus
LPC_DRQ[0:1]# LPC serial DMA request
LPC_CLKOUT1 LPC clock output - 33MHz nominal
LPC_SERIRQ LPC serial interrupt
2.4.2.1.6 Miscellaneous Signals
Signal Signal Description
SPKR Output for audio enunciator - the "speaker" in PC-AT systems
BIOS_DIS0#
BIOS_DIS1#
Selection straps to determine the BIOS boot device
BIOS_DIS1# BIOS_DIS0#
Chipset
SPI CS1#
Destination
Chipset
SPI CS0#
Destination
Carrier
SPI_CS#
SPI
Descriptor
Bios Entry
Ref
Line
1 1 Module Module High Module SPI0/SPI1 0
1 0 Module Module High Module
Carrier
FWH
1
0 1 Module Carrier SPI0 Carrier SPI0/SPI1 2
0 0 Carrier Module SPI1 Module SPI0/SPI1 3
2.4.2.1.7 GPIO Signals
Signal Signal Description
GPI[0:4] General purpose input pins.
GPO[0:4] General purpose output pins.