Lpc Signals Descriptions - DFI GH9A3 User Manual

LVDS_BKLT_ B79 O CMOS 3.3V / 3.3V
EN
LVDS_BKLT_ B83 O CMOS 3.3V / 3.3V
CTRL
LVDS_I2C_CK A83 I/O OD 3.3V / 3.3V
CMOS
LVDS_I2C_DAT A84 I/O OD 3.3V / 3.3V
CMOS

LPC Signals Descriptions

Signal Pin# Pin Type Pwr Rail /Tolerance
LPC_AD0/ B4 I/O CMOS LPC: 3.3V / 3.3V
ESPI_IO_0 ESPI: 1.8V Suspend
/ 1.8V
LPC_AD1/ B5
ESPI_IO_1
LPC_AD2/ B6
ESPI_IO_2
LPC_AD3/ B7
ESPI_IO_3
LPC_FRAME#/ B3 O CMOS LPC: 3.3V / 3.3V
ESPI_CS0# ESPI: 1.8V Suspend
/ 1.8V
LPC_DRQ0#/ B8 I CMOS LPC: 3.3V / 3.3V
ESPI_ALERT0# ESPI: 1.8V Suspend
/ 1.8V
LPC_DRQ1#/ B9
ESPI_ALERT1#
LPC_SERIRQ/ A50 LPC: I/O LPC: 3.3V / 3.3V
ESPI_CS1# CMOS ESPI: 1.8V Suspend
ESPI: O / 1.8V
CMOS
LPC_CLK/ B10 O CMOS LPC: 3.3V / 3.3V
ESPI_CK ESPI: 1.8V Suspend
/ 1.8V
ESPI_EN# B47 I CMOS NA
User's Manual | GH9A3
Connect to enable control of LVDS panel backlight
power circuit.
Connect to brightness control of LVDS panel backlight
power circuit.
PU 4.7K to 3.3V Connect to DDC clock of LVDS panel
PU 4.7K to 3.3V Connect to DDC data of LVDS panel
WL9A3 Carrier Board
LPC Mode Connect to LPC / ESPI device
LPC Mode
LPC Mode
PU 10K to 3.3V
LPC Mode
PU 10K to 3.3V
LPC Mode
N/A
HARDWARE INSTALLATION
LVDS panel backlight enable
LVDS panel backlight brightness control
I2C clock output for LVDS display use
I2C data line for LVDS display use
Description
LPC Mode: LPC multiplexed address, command and data bus.
ESPI Mode: eSPI Master Data Input / Outputs.
LPC Mode: LPC frame indicates the start of an LPC cycle
ESPI Mode: eSPI Master Chip Select Outputs Driving Chip Select0#.
LPC Mode: LPC serial DMA request
ESPI Mode: ESPI Mode: eSPI pins used by eSPI slave to request
service from the eSPI master.
LPC Mode: LPC serial interrupt
ESPI Mode: eSPI Master Chip Select Outputs Driving Chip Select1#.
LPC Mode: LPC clock output - 33MHz nominal
ESPI Mode: eSPI Master Clock Output
This signal is used by he Carrier to indicate the operating mode of
the LPC/eSPI bus.
Chapter 2
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