SMSC USB2602 Manual De Usuario

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

Revision 1.6 (06-20-08)

18

SMSC USB2601/USB2602

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.

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.