4th Generation USB 2.0 Flash Media Controller with Integrated Card Power FETs

Datasheet

SMSC USB2226

13

Revision 1.4 (10-08-07)

DATASHEET

MS_BS

24

O8

MS Bus State:

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_SDIO/MS_

D0

19

I/O8PD

MS System Data In/Out:

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_D1

20

I/O8PD

MS System Data In/Out:

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_D[3:2]

22

21

I/O8PD

MS System Data In/Out:

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_INS

18

IPU

MS Card Insertion:

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_SCLK

23

O8

MS System CLK:

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

The clock frequency is software configurable.

SD INTERFACE

SD_DAT[3:0]

29

28

27

26

I/O8PU

SD Data 3-0:

These are bi-directional data signals.

These pins have internally controlled weak pull-up resistors.

SD_CLK

31

O8

SD Clock:

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

The clock frequency is software configurable.

SD_CMD

30

I/O8PU

SD Command:

This is a bi-directional signal that connects to the CMD signal of

SD/MMC device.

This pin has an internally controlled weak pull-up resistor.

SD_nWP

25

IPD

SD Write Protected:

This pin is an input signal with an internal weak pull-down.

This pin has an internally controlled weak pull-down resistor.

SYMBOL

128-PIN

VTQFP

BUFFER

TYPE

DESCRIPTION