4th Generation USB2.0 Flash Media Controller with Integrated Card Power FETs and HS Hub

Datasheet

SMSC USB2601/USB2602

17

Revision 1.3 (05-25-05)

DATASHEET

SM

Chip Enable

SM_nCE

O8PU

This pin is the active low chip enable signal to the SM

device.

When using the internal FET, this pin has an internal

weak pull-up resistor that is tied to the output of the

internal Power FET.

08

If an external FET is used (Internal FET is disabled),

then the internal pull-up is not available (external pull-

ups must be used, and should be connected to the

applicable Card Power Supply).

SM

Card Detection

SM_nCD

IPU

This is the card detection signal from SM device to

indicate if the device is inserted.

This pin has an internally controlled weak pull-up

resistor.

MEMORY STICK INTERFACE

MS

Bus State

MS_BS

O8

This pin is connected to the BS pin of the MS device.

It is used to control the Bus States 0, 1, 2 and 3 (BS0,

BS1, BS2 and BS3) of the MS device.

MS

System

Data In/Out

MS_SDIO/MS_

D0

I/O8PD

This pin is a bi-directional data signal for the MS device.

Most significant bit (MSB) of each byte is transmitted

first by either MSC or MS device.

The bi-directional data signal has an internal weak pull-

down resistor.

MS

System Data In/Out

MS_D1

I/O8PD

This pin is a bi-directional data signal for the MS device.

This pin has internally controlled weak pull-up and pull-

down resistors for various operational modes.

MS

System

Data In/Out

MS_D[3:2]

I/O8PD

This pin is a bi-directional data signal for the MS device.

The bi-directional data signal has an internal weak pull-

down resistor.

MS

Card Insertion

MS_INS

IPU

This pin is the card detection signal from the MS device

to indicate, if the device is inserted.

This pin has an internally controlled weak pull-up

resistor.

MS

System CLK

MS_SCLK

O8

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

The clock frequency is software configurable.

SD INTERFACE

SD

Data3-0

SD_DAT[3:0]

I/O8PU

These are bi-directional data signals.

These pins have internally controlled weak pull-up

resistors.

SD Clock

SD_CLK

O8

This is an output clock signal to SD/MMC device.

The clock frequency is software configurable.

NAME

SYMBOL

BUFFER

TYPE

DESCRIPTION