Datasheet

High-Speed Inter-Chip (HSIC) USB 2.0 Hub and Flash Media Controller
Datasheet
SMSC USB4640/USB4640i 15 Revision 1.3 (03-13-13)
DATASHEET
MS_D[7:0] 20
19
17
18
32
30
23
24
I/O8PD Memory Stick System Data In/Out
Bi-directional data signals for the MS device. In serial mode, the
most significant bit (MSB) of each byte is transmitted first by either
the memory stick controller MSC or the MS device on MS_D0.
MS_D0, MS_D2, and MS_D3 have weak pull-down resistors. MS_D1
has a pull-down resistor when in parallel mode. Otherwise, it is
disabled. In 4- or 8-bit parallel modes, all MS_D7 - MS_D0 signals
have weak pull-down resistors.
xD-PICTURE CARD INTERFACE
xD_D[7:0] 30
32
33
13
17
18
19
20
I/O8PD xD-Picture Card Data 7-0
Bi-directional data signals xD_D7 - xD_D0 and have weak internal
pull-down resistors.
xD_ALE 23 O8PD xD-Picture Card Address Strobe
Active high Address Latch Enable (ALE) signal for the xD-Picture
Card device. This pin has a weak pull-down resistor that is
permanently enabled.
xD_nB/R 28 IPU xD-Picture Card Busy or Data Ready
Connected to the BSY/RDY pin of the xD-Picture Card device.
When using the internal FET, this pin has a weak internal pull-up
resistor that is tied to the output of the internal power FET.
If an external FET is used (the internal FET is disabled), then the
internal pull-up is not available (an external pull-up is required).
xD_nCE 26 O8PU xD-Picture Card Chip Enable
Active low chip enable signal for the xD-Picture Card device.
When using the internal FET, this pin has weak internal pull-up
resistor that is tied to the output of the internal power FET.
If an external FET is used (internal FET is disabled), then the internal
pull-up is not available (an external pull-up is required).
xD_CLE 24 O8PD xD-Picture Card Command Strobe
An active high Command Latch Enable signal for the xD-Picture
Card device. This pin has a weak pull-down resistor that is
permanently enabled.
GPIO14/ 29 I/O6 General Purpose IO 14
Can be used either as input; edge sensitive interrupt input; or output.
Custom firmware is required to activate this function.
xD_nCD I/O8 xD-Picture Card Detection GPIO
Designated by the default firmware as the xD-Picture Card detection
pin and has an internal pull-up.
Table 3.2 USB4640/USB4640i Pin Descriptions (continued)
SYMBOL
48-PIN
QFN
BUFFER
TYPE DESCRIPTION