SMSC USB2242 Manual De Usuario

Ultra Fast USB 2.0 Memory Stick Flash Media Controller

SMSC USB2242/USB2242i

19

Revision 1.0 (05-27-08)

Output leakage is measured with the current pins in high impedance.

See The USB 2.0 Specification, Chapter 7, for USB DC electrical characteristics

RBIAS is a 3.3V tolerant analog pin.

Output current range is controlled by program software, software disables FET during short
circuit condition.

The assignment of each Integrated Card Power FET to a designated Card Connector is
controlled by both firmware and the specific board implementation. Firmware will default to

Low Output Level

High Output Level  

Output Leakage

Pull Down

Pull Up

V

OL

V

OH

I

OL

PD

PU

V

DD33 

- 0.4

-10

72

58

0.4

+10

V

V

µA

μA

μA

I

OL

 = 12mA @ 

V

DD33

= 3.3V

I

OH

 = -12mA @ 

V

DD33

= 3.3V

V

IN

 = 0 to V

DD33

IO-U
(

I-R
(

High Output Current Mode

Low Output Current Mode
(

On Resistance 
(

Output Voltage Rise Time 

I

OUT

I

OUT

R

DSON

t

DSON

200

100

2.1

800

mA

mA

Ω

μs

Vdrop

FET

 = 0.46V

Vdrop

FET

 = 0.23V

I

FET

 = 70mA

C

LOAD

 = 10

μF

Supply Current Unconfigured

I

CCINIT

80

90

mA

Supply Current Active

Full Speed

High Speed

I

CC

I

CC

110

135

140

165

mA

mA

Supply Current Suspend

I

CSBY

350

700

µA

Industrial Temperature Suspend

I

CSBYI

350

900

µA