5th Generation Hi-Speed USB Flash Media & IrDA Controller with Integrated Card Power FETs

Datasheet

SMSC USB2229/USB2230

27

Revision 1.2 (02-21-05)

DATASHEET

Chapter 9 GPIO Usage

Table 9.1 GPIO Usage (ROM Rev 0x00)

NAME

ACTIVE

LEVEL

SYMBOL

DESCRIPTION AND NOTE

GPIO1

H

Flash Media Activity LED/

xD_Door

Indicates media activity. Media or USB

cable must not be removed with LED lit.

Also may be used for xD Door

functionality

GPIO2

H

EE_CS

Serial EE PROM chip select

GPIO3

H

V_BUS

USB V bus detect

GPIO4

H

EE_DIN/EE_DOUT/xDID

Serial EE PROM input/output and xD

Identify

GPIO5

H

HS_IND/SD_CD

HS Indicator LED or SD Card Detect

Switch input

GPIO6

H

A16/ROMEN

A16 address line connect for DFU or

debug LED indicator optional.

GPIO7

H

EE_CLK/

UNCONF_LED

Serial EE PROM clock output or

Unconfigured LED.

GPIO8

L

MS_PWR_CTRL/

CRD_PWR0

Memory Stick Card Power Control, or

Internal Power FET0.

GPIO9

L

CF_PWR_CTRL

CompactFlash Card Power Control

GPIO10

L

SM_PWR_CTRL/

CRD_PWR1

SmartMedia Card Power Control, or

Internal Power FET1.

GPIO11

L

SD/MMC_PWR_CTRL/

CRD_PWR2

SD/MMC Card Power Control, or

Internal Power FET2.

GPIO12

H

MS_ACT_IND/

Media Activity

Memory Stick Activity Indicator, or

Media Activity LED.