USB2601_06 Datasheet, PDF (17/26 Pages) SMSC Corporation – 4th Generation USB2.0 Flash Media Controller with Integrated Card Power FETs and HS Hub

4th Generation USB2.0 Flash Media Controller with Integrated Card Power FETs and HS Hub
Datasheet
NAME
SYMBOL
BUFFER
TYPE
DESCRIPTION
SM
Chip Enable
SM_nCE
O8PU
This pin is the active low chip enable signal to the SM
device.
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
Card Detection
SM_nCD
IPU
This is the card detection signal from SM device to
indicate if the device is inserted.
This pin has an internally controlled weak pull-up
resistor.
MEMORY STICK INTERFACE
MS
Bus State
MS_BS
O8
This pin is connected to the BS pin of the MS device.
It is used to control the Bus States 0, 1, 2 and 3 (BS0,
BS1, BS2 and BS3) of the MS device.
MS
System
Data In/Out
MS_SDIO/MS_
D0
I/O8PD
This pin is a bi-directional data signal for the MS device.
Most significant bit (MSB) of each byte is transmitted
first by either MSC or MS device.
The bi-directional data signal has an internal weak pull-
down resistor.
MS
System Data In/Out
MS_D1
I/O8PD
This pin is a bi-directional data signal for the MS device.
This pin has internally controlled weak pull-up and pull-
down resistors for various operational modes.
MS
System
Data In/Out
MS_D[3:2]
I/O8PD
This pin is a bi-directional data signal for the MS device.
The bi-directional data signal has an internal weak pull-
down resistor.
MS
Card Insertion
MS_INS
IPU
This pin is the card detection signal from the MS device
to indicate, if the device is inserted.
This pin has an internally controlled weak pull-up
resistor.
MS
System CLK
MS_SCLK
O8
This pin is an output clock signal to the MS device.
The clock frequency is software configurable.
SD INTERFACE
SD
Data3-0
SD_DAT[3:0]
I/O8PU
These are bi-directional data signals.
These pins have internally controlled weak pull-up
resistors.
SD Clock
SD_CLK
O8
This is an output clock signal to SD/MMC device.
The clock frequency is software configurable.
SMSC USB2601/USB2602
17
DATASHEET
Revision 1.5 (07-24-06)