USB2227 datasheet(12/27 Pages) SMSC

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

Datasheet

Revision 1.91 (10-13-06)

SMSC USB2227/USB2228

DATASHEET

CF_D[7:0]

B19

A19

B18

A18

B17

A17

B16

B15

I/O8PD

CF Data 7-0:

The bi-directional data signals CF_D7-CF_D0 in the

True IDE mode data transfer.

In the True IDE Mode, all of task file register operation

occur on the CF_D[7:0], while the data transfer is on

CF_D[15:0].

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

down resistor.

CF_IORDY

A28

IPU

IO Ready:

This pin is active high input signal.

This pin has an internally controlled weak pull-up

resistor.

CF_nCD2

A27

IPU

CF Card Detection2:

This card detection pin is connected to the ground on

the CF device, when the CF device is inserted.

This pin has an internally controlled weak pull-up

resistor.

CF_nCD1

B25

IPU

CF Card Detection1:

This card detection pin is connected to ground on the

CF device, when the CF device is inserted.

This pin has an internally controlled weak pull-up

resistor.

CF_nRESET

A30

CF Hardware Reset:

This pin is an active low hardware reset signal to CF

device.

CF_nIOR

A29

CF IO Read:

This pin is an active low read strobe signal for CF

device.

CF_nIOW

B27

CF IO Write Strobe:

This pin is an active low write strobe signal for CF

device.

SmartMedia INTERFACE

SM_nWP

B35

O8PD

SM Write Protect:

This pin is an active low write protect signal for the SM

device.

This pin has a weak pull-down resistor that is

permanently enabled.

SM_ALE

A37

O8PD

SM Address Strobe:

This pin is an active high Address Latch Enable signal

for the SM device.

This pin has a weak pull-down resistor that is

permanently enabled.

SYMBOL

128-PIN

VTQFP

124-PIN

DQFN

BUFFER

TYPE

DESCRIPTION

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