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

Datasheet

 

 

BUFFER

 

 

NAME

SYMBOL

TYPE

 

DESCRIPTION

 

 

 

 

 

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

SD_nWP

IPD

 

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

Write Protected

 

 

 

down.

 

 

 

 

This pin has an internally controlled weak pull-down

 

 

 

 

resistor.

 

 

 

 

 

 

 

 

MISC

 

 

 

 

 

General Purpose

GPIO1

I/O8

 

This pin may be used either as input, edge sensitive

I/O

 

 

 

interrupt input, or output.

 

 

 

 

 

General Purpose

GPIO2

I/O8

 

This pin may be used either as input, edge sensitive

I/O

 

 

 

interrupt input, or output.

 

 

 

 

 

General Purpose

GPIO4

I/O8

 

This pin may be used either as input, edge sensitive

I/O

 

 

 

interrupt input, or output.

 

 

 

 

 

General Purpose

GPIO5

I/O8

 

This pin may be used either as input, edge sensitive

I/O

 

 

 

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

GPIO7

I/O8

 

This pin may be used either as input, edge sensitive

I/O

 

 

 

interrupt input, or output.

 

 

 

 

 

General Purpose

GPIO8/

I/O8

 

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

I/O

CRD_PWR0

 

 

sensitive interrupt input, or output.

Or

 

 

 

 

 

 

 

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

Card Power

 

 

 

 

 

 

 

 

General Purpose

GPIO9

I/O8

 

This pin may be used either as input, edge sensitive

I/O

 

 

 

interrupt input, or output.

 

 

 

 

 

General Purpose

GPIO10/

I/O8

 

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

I/O

CRD_PWR1

 

 

sensitive interrupt input, or output.

Or

 

 

 

 

 

 

 

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

Card Power

 

 

 

 

 

 

 

 

Revision 1.6 (06-20-08)

18

SMSC USB2601/USB2602

 

DATASHEET