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

Datasheet

Revision 1.3 (05-25-05)

18

SMSC USB2601/USB2602

DATASHEET

SD Command

SD_CMD

I/O8PU

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

Write Protected

SD_nWP

IPD

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

down.

This pin has an internally controlled weak pull-down

resistor.

MISC

General Purpose

I/O

GPIO1

I/O8

This pin may be used either as input, edge sensitive

interrupt input, or output.

General Purpose

I/O

GPIO2

I/O8

This pin may be used either as input, edge sensitive

interrupt input, or output.

General Purpose

I/O

GPIO4

I/O8

This pin may be used either as input, edge sensitive

interrupt input, or output.

General Purpose

I/O

GPIO5

I/O8

This pin may be used either as input, edge sensitive

interrupt input, or output.

GPIO6

GPIO6

IPU

This pin has an internal weak pull-up resistor that is

enabled or disabled by the state of RESET_N.

The pull-up is enabled when RESET_N is active.

The pull-up is disabled, when the RESET_N is inactive

(some clock cycles later, after the rising edge of

RESET_N).

The state of this pin is latched internally on the rising

edge of RESET_N to determine if internal or external

program memory is used.

The state latched is stored in ROMEN bit of GPIO_IN1

register.

I/O8

After the rising edge of RESET_N, this pin may be used

as GPIO6.

When this pin is left unconnected or pulled high by a

weak pull-up resistor, the USB2601/USB2602 uses the

internal ROM for program execution.

This pin may be used either as input, edge sensitive

interrupt input, or output.

General Purpose

I/O

GPIO7

I/O8

This pin may be used either as input, edge sensitive

interrupt input, or output.

General Purpose

I/O

Or

Card Power

GPIO8/

CRD_PWR0

I/O8

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

sensitive interrupt input, or output.

CRD_PWR: Card Power drive of 3.3V @ 100mA.

General Purpose

I/O

GPIO9

I/O8

This pin may be used either as input, edge sensitive

interrupt input, or output.

General Purpose

I/O

Or

Card Power

GPIO10/

CRD_PWR1

I/O8

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

sensitive interrupt input, or output.

CRD_PWR: Card Power drive of 3.3V @ 100mA.

NAME

SYMBOL

BUFFER

TYPE

DESCRIPTION