USB4640 datasheet(17/64 Pages) SMSC

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High Speed Inter-Chip (HSIC) USB 2.0 Hub and Flash Media Controller

Datasheet

SMSC USB4640/USB4640i

Revision 1.0 (06-09-09)

DATASHEET

GPIO6 /

SD_WP

I/O6

This general purpose pin may be used either as input, edge sensitive

interrupt input, or output. Custom firmware is required to activate this

function.

I/O8

Secure Digital Write Protected GPIO

This is a GPIO designated by the default firmware as the Secure

Digital card interface mechanical write protect detect pin.

MEMORY STICK INTERFACE

MS_BS

Memory Stick Bus State

This pin is connected to the bus state pin of the MS device. It is used

to control the Bus States 0, 1, 2, and 3 (BS0, BS1, and BS3) of the

MS device.

GPIO12 /

MS_INS

I/O8

This general purpose pin may be used either as input, edge sensitive

interrupt input, or output. Custom firmware is required to activate this

function.

IPU

Memory Stick Card Insertion GPIO

This is a GPIO designated by the default software as the Memory

Stick card detection pin and has a weak internal pull-up resistor.

MS_SCLK

Memory Stick System Clock

This pin is an output clock signal to the MS device.

MS_D[7:0]

I/O8PD

Memory Stick System Data In/Out

These pins are the bi-directional data signals for the MS device. In

serial mode, the most significant bit (MSB) of each byte is

transmitted first by either the memory stick controller MSC or the MS

device on MS_D0.

MS_D0, MS_D2, and MS_D3 have weak pull-down resistors. MS_D1

has a pull-down resistor if it is in parallel mode. Otherwise, it is

disabled. In 4- or 8-bit parallel modes, all MS_D7 - MS_D0 signals

have weak pull-down resistors.

xD-PICTURE CARD INTERFACE

xD_D[7:0]

I/O8PD

xD-Picture Card Data 7-0

These pins are the bi-directional data signals xD_D7 - xD_D0 and

have weak internal pull-down resistors.

xD_ALE

O8PD

xD-Picture Card Address Strobe

This pin is an active high Address Latch Enable (ALE) signal for the

xD-Picture Card device. This pin has a weak pull-down resistor that

is permanently enabled.

Table 6.1 USB4640/USB4640i Pin Descriptions (continued)

SYMBOL

48-PIN

QFN

BUFFER

TYPE

(Table 6.2)DESCRIPTION

USB4640 Datenblatt(PDF) 17 Page - SMSC Corporation

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