4th Generation USB2.0 Flash Media Controller with Integrated Card Power FETs and HS Hub
Datasheet
BUFFER
NAME
SYMBOL
TYPE
DESCRIPTION
CF
CF_nIOR
O8
This pin is an active low read strobe signal for CF
device.
IO Read
CF
CF_nIOW
O8
This pin is an active low write strobe signal for CF
device.
IO Write Strobe
SmartMedia INTERFACE
SM
SM_nWP
O8PD
O8PD
O8PD
I/O8PD
08PU
This pin is an active low write protect signal for the SM
device.
Write Protect
This pin has a weak pull-down resistor that is
permanently enabled
SM
SM_ALE
SM_CLE
SM_D[7:0]
SM_nRE
This pin is an active high Address Latch Enable signal
for the SM device.
Address Strobe
This pin has a weak pull-down resistor that is
permanently enabled
SM
This pin is an active high Command Latch Enable signal
for the SM device.
Command Strobe
This pin has a weak pull-down resistor that is
permanently enabled
SM
These pins are the bi-directional data signal SM_D7-
SM_D0.
Data7-0
The bi-directional data signal has an internal weak pull-
down resistor.
SM
This pin is an active low read strobe signal for SM
device.
Read Enable
When using the internal FET, this pin has an internal
weak pull-up resistor that is tied to the output of the
internal Power FET.
08
If an external FET is used (Internal FET is disabled),
then the internal pull-up is not available (external pull-
ups must be used, and should be connected to the
applicable Card Power Supply).
SM
SM_nWE
O8PU
This pin is an active low write strobe signal for SM
device.
Write Enable
When using the internal FET, this pin has an internal
weak pull-up resistor that is tied to the output of the
internal Power FET.
08
IPU
I
If an external FET is used (Internal FET is disabled),
then the internal pull-up is not available (external pull-
ups must be used, and should be connected to the
applicable Card Power Supply).
SM
SM_nWPS
SM_nB/R
A write-protect seal is detected, when this pin is low.
Write Protect Switch
This pin has an internally controlled weak pull-up
resistor.
SM
This pin is connected to the BSY/RDY pin of the SM
device.
Busy or Data Ready
An external pull-up resistor is required on this signal.
The pull-up resistor must be pulled up to the same
power source that powers the SM/NAND flash device.
Revision 1.3 (05-25-05)
SMSC USB2601/USB2602
DATA1S6HEET
SMSC [ SMSC CORPORATION ]
