DFI WL9A3, Руководство пользователя, Страница: 20 / 23

18
Chapter 2
HARDWARE INSTALLATION
User's Manual | WL9A3
LVDS_BKLT_
EN
B79 O CMOS 3.3V / 3.3V Connect to enable control of LVDS panel backlight
power circuit.
LVDS panel backlight enable
LVDS_BKLT_
CTRL
B83 O CMOS 3.3V / 3.3V Connect to brightness control of LVDS panel backlight
power circuit.
LVDS panel backlight brightness control
LVDS_I2C_CK A83 I/O OD
CMOS
3.3V / 3.3V PU 4.7K to 3.3V Connect to DDC clock of LVDS panel I2C clock output for LVDS display use
LVDS_I2C_DAT A84 I/O OD
CMOS
3.3V / 3.3V PU 4.7K to 3.3V Connect to DDC data of LVDS panel I2C data line for LVDS display use
LPC Signals Descriptions
Signal Pin# Pin Type Pwr Rail /Tolerance WL9A3 Carrier Board Description
LPC_AD0/
ESPI_IO_0
B4 I/O CMOS LPC: 3.3V / 3.3V
ESPI: 1.8V Suspend
/ 1.8V
LPC Mode Connect to LPC / ESPI device LPC Mode: LPC multiplexed address, command and data bus.
ESPI Mode: eSPI Master Data Input / Outputs.
LPC_AD1/
ESPI_IO_1
B5
LPC_AD2/
ESPI_IO_2
B6
LPC_AD3/
ESPI_IO_3
B7
LPC_FRAME#/
ESPI_CS0#
B3 O CMOS LPC: 3.3V / 3.3V
ESPI: 1.8V Suspend
/ 1.8V
LPC Mode LPC Mode: LPC frame indicates the start of an LPC cycle
ESPI Mode: eSPI Master Chip Select Outputs Driving Chip Select0#.
LPC_DRQ0#/
ESPI_ALERT0#
B8 I CMOS LPC: 3.3V / 3.3V
ESPI: 1.8V Suspend
/ 1.8V
LPC Mode
PU 10K to 3.3V
LPC Mode: LPC serial DMA request
ESPI Mode: ESPI Mode: eSPI pins used by eSPI slave to request
service from the eSPI master.
LPC_DRQ1#/
ESPI_ALERT1#
B9
LPC_SERIRQ/
ESPI_CS1#
A50 LPC: I/O
CMOS
ESPI: O
CMOS
LPC: 3.3V / 3.3V
ESPI: 1.8V Suspend
/ 1.8V
LPC Mode
PU 10K to 3.3V
LPC Mode: LPC serial interrupt
ESPI Mode: eSPI Master Chip Select Outputs Driving Chip Select1#.
LPC_CLK/
ESPI_CK
B10 O CMOS LPC: 3.3V / 3.3V
ESPI: 1.8V Suspend
/ 1.8V
LPC Mode LPC Mode: LPC clock output - 33MHz nominal
ESPI Mode: eSPI Master Clock Output
ESPI_EN# B47 I CMOS NA N/A This signal is used by he Carrier to indicate the operating mode of
the LPC/eSPI bus.