Commell QE-E70 Manual do Utilizador descarregar pdf (Página 16)

LN-D70 User’s Manual

16-

USB_SSTX0+

USB_SSTX0-

Multiplexed with transmit signal differential pairs for the

Superspeed USB data path.

USB_0_1_OC# Over current detect input 1. This pin is used to monitor the

USB power over current of the USB Ports 0 and 1.

USB_2_3_OC# Over current detect input 2. This pin is used to monitor the

USB power over current of the USB Ports 2 and 3.

2.3.4<SDIO Interface Signals>

Signal Description

SDIO_CD#

SDIO Card Detect. This signal indicates when a SDIO card is presen

SDIO_CLK

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

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

SDIO Write Protect. This signal denotes the state of the

write-protect tab on SD cards.

SDIO_PWR# SDIO Power Enable. This signal is used to enable the power

being supplied to a SD card device.

SDIO_DAT0-3 SDIO Data lines. These signals operate in push-pull mode.

2.3.5<High Definition Audio Signals/AC'97>

Signal Description

HDA_RST# HD Audio/AC'97 Codec Reset.

HDA_SYNC Serial Bus Synchronization.

HDA_BCLK HD Audio/AC'97 24 MHz Serial Bit Clock from Codec.

HDA_SDO HD Audio/AC'97 Serial Data Output to Codec.

HDA_SDI HD Audio/AC'97 Serial Data Input from Codec.

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