4th Generation USB2.0 Flash Media Controller with Integrated Card Power FETs and HS Hub
Datasheet
BUFFER
NAME
SYMBOL
TYPE
DESCRIPTION
SM
SM_nCE
O8PU
This pin is the active low chip enable signal to the SM
device.
Chip 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_nCD
MS_BS
IPU
This is the card detection signal from SM device to
indicate if the device is inserted.
Card Detection
This pin has an internally controlled weak pull-up
resistor.
MEMORY STICK INTERFACE
MS
O8
This pin is connected to the BS pin of the MS device.
Bus State
It is used to control the Bus States 0, 1, 2 and 3 (BS0,
BS1, BS2 and BS3) of the MS device.
MS
MS_SDIO/MS_
D0
I/O8PD
This pin is a bi-directional data signal for the MS device.
System
Most significant bit (MSB) of each byte is transmitted
first by either MSC or MS device.
Data In/Out
The bi-directional data signal has an internal weak pull-
down resistor.
MS
MS_D1
MS_D[3:2]
MS_INS
I/O8PD
I/O8PD
IPU
This pin is a bi-directional data signal for the MS device.
System Data In/Out
This pin has internally controlled weak pull-up and pull-
down resistors for various operational modes.
MS
This pin is a bi-directional data signal for the MS device.
System
The bi-directional data signal has an internal weak pull-
down resistor.
Data In/Out
MS
This pin is the card detection signal from the MS device
to indicate, if the device is inserted.
Card Insertion
This pin has an internally controlled weak pull-up
resistor.
MS
MS_SCLK
O8
This pin is an output clock signal to the MS device.
The clock frequency is software configurable.
System CLK
SD INTERFACE
SD
SD_DAT[3:0]
SD_CLK
I/O8PU
These are bi-directional data signals.
Data3-0
These pins have internally controlled weak pull-up
resistors.
SD Clock
O8
This is an output clock signal to SD/MMC device.
The clock frequency is software configurable.
SMSC USB2601/USB2602
Revision 1.3 (05-25-05)
DATA1S7HEET
SMSC [ SMSC CORPORATION ]
