USB2250 datasheet(15/36 Pages) SMSC

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Ultra Fast USB 2.0 Multi-Format Flash Media Controller

Datasheet

SMSC USB2250/51/59

Revision 2.6 (05-08-08)

DATASHEET

CF Data 7-0 /

GPIO

CF_D[7:0] /

GPIO[23:16]

I/O12PD

CF_D[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 the task file register

operations 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.

I/O12

GPIO[23:16]: These Pins are GPIOs if

CF_INTF_EN bit of CFC_ATA_MODE CTL is

disabled and EXTENDED_GPIO bit is set in

UTIL_CONFIG1 is enabled.

IO Ready

CF_IORDY

IPU

This pin is active high input signal for IORDY.

This pin has an internal weak pull-up resistor that

can be controlled by:

CF_INTF_EN bit of CFC_ATA_MODE CTL

CF Card

Detection1

CF_nCD

(GPIO13)

I/O12

This is a GPIO designated as the Compact Flash

card detection pin.

CF Hardware

Reset

CF_nRESET

O12

This pin is an active low hardware reset signal to

CF device.

CF IO Read

CF_nIOR

O12

This pin is an active low read strobe signal for CF

device.

CF IO Write

Strobe

CF_nIOW

O12

This pin is an active low write strobe signal for CF

device.

CF DMA

request

CF_DMARQ /

GPIO2 / RXD

117

CF_DMARQ: This pin is the DMA request from

the device to the CF controller.

I/O12

GPIO: This pin may be used either as input, edge

sensitive interrupt input, or output.

RXD: The signal can be used as input to the RXD

of UART in the device, when the TXD_RXD_SEL

bit in UTIL_CONFIG1 register is cleared to "0".

CF DMA

acknowledge

CF_nDMACK/

GPIO / TXD

119

O12

CF_nDMACK: This pin is an active low dma

acknowledge signal for CF device.

I/O12

GPIO: This pin may be used either as input, edge

sensitive interrupt input, or output.

O12

TXD: In addition, as an output, the GPIO7 can be

used as an output TXD of UART in the device,

when the GPIO2/TXD bit in UTL_CONFIG register

is set to "1"

SMART MEDIA INTERFACE

SM Write

Protect

SM_nWP

O12PD

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.

Table 5.1 USB2250/51/59 128-Pin VTQFP Pin Descriptions (continued)

NAME

SYMBOL

128-PIN

VTQFP

BUFFER

TYPE

DESCRIPTION

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