17
Chapter 2
HARDWARE INSTALLATION
User's Manual |
AL701
USB_VBUS_SUS_C
91
I CMOS
CMOS 5.0V
USB VBUS pin, 5V tolerant
VBUS resistance has to be placed on the module
VBUS capacitance has to be placed on the carrier board
USB_OTG_PEN
56
O CMOS
CMOS 3.3V
USB Power enable pin for USB Port 1
Enables the Power for the USB-OTG port on the carrier
board.
SDIO Interface Signals
Signal
Pin#
Pin Type
Pwr Rail /Tolerance AL701
Carrier Board
Description
SDIO_CD-
43
I/O CMOS
3.3V/3.3V
Connect to SD Card
SDIO Card Detect. This signal indicates when a SDIO/MMC card is
present.
SDIO_CLK
42
O CMOS
3.3V/3.3V
Connect to SD Card
SDIO Clock. With each cycle of this signal a one-bit transfer on the
command and each data line occurs. This signal has maximum
frequency of 48 MHz.
SDIO_CMD
45
I/O OD/PP
CMOS
3.3V/3.3V
Connect to SD Card
SDIO Command/Response. This signal is used for card initialization and
for command transfers. During initialization mode this signal is open
drain. During command transfer this signal is in push-pull mode.
SDIO_WP
46
I/O CMOS
3.3V/3.3V
Connect to SD Card
SDIO Write Protect. This signal denotes the state of the write-protect tab
on SD cards.
SDIO_PWR
47
O CMOS
3.3V/3.3V
SDIO Power Enable. This signal is used to enable the power being
supplied to a SD/MMC card device.
SDIO_D1
48
I/O PP CMOS 3.3V/3.3V
Connect to SD Card
SDIO Data lines. These signals operate in push-pull mode
SDIO_D0
49
I/O PP CMOS 3.3V/3.3V
Connect to SD Card
SDIO Data lines. These signals operate in push-pull mode
SDIO_D3
50
I/O PP CMOS 3.3V/3.3V
Connect to SD Card
SDIO Data lines. These signals operate in push-pull mode
SDIO_D2
51
I/O PP CMOS 3.3V/3.3V
Connect to SD Card
SDIO Data lines. These signals operate in push-pull mode
High Definition Audio Signals/AC’97
Signal
Pin#
Pin Type
Pwr Rail /Tolerance AL701
Carrier Board
Description
3V3_HDA_RST-
61
O CMOS
3.3V/3.3V
Connect to CODEC
HD Audio/AC’97 Codec Reset.
Multiplexed with I2S Codec Reset.
HDA_SYNC_3V3
59
O CMOS
3.3V/3.3V
Connect to CODEC
Serial Bus Synchronization.
Multiplexed with I2S Word Select from Codec.
HDA_BITCLK_3V3
63
O CMOS
3.3V/3.3V
Connect to CODEC
HD Audio/AC’97 24 MHz Serial Bit Clock from Codec.
Multiplexed with I2S Serial Data Clock from Codec.
HDA_SDO_3V3
67
O CMOS
3.3V/3.3V
Connect to CODEC
HD Audio/AC’97 Serial Data Output to Codec.
Multiplexed with I2S Serial Data Output from Codec.
HDA_SDI0_3V3
65
I CMOS
3.3V/3.3V
Connect to CODEC
HD Audio/AC’97 Serial Data input to Codec.
Multiplexed with I2S Serial Data Input from Codec.
LVDS Flat Panel Signals
Signal
Pin#
Pin Type
Pwr Rail /Tolerance AL701
Carrier Board
Description
LVDS_VDD_EN_R
111
O CMOS
3.3V/3.3V
Connect to enable control of LVDS panel power circuit Controls panel power enable.
