SMSC USB464, USB4640i QFN, TYPE, 48-PIN, BUFFER, SYMBOL, DATASHEET, DESCRIPTION, MEMORY STICK INTERFACE, xD-PICTURECARD INTERFACE

High Speed Inter-Chip USB 2.0 Hub and Flash Media Controller

Datasheet

Table 6.1 USB4640/USB4640i Pin Descriptions (continued)

	48-PIN	BUFFER
	QFN	TYPE
SYMBOL		(Table 6.2)		DESCRIPTION
GPIO6 /	13	I/O6		This general purpose pin may be used either as input, edge sensitive
				interrupt input, or output. Custom firmware is required to activate this
				function.
SD_WP		I/O8		Secure Digital Write Protected GPIO
				This is a GPIO designated by the default firmware as the Secure
				Digital card interface mechanical write protect detect pin.
			MEMORY STICK INTERFACE
MS_BS	21	O8		Memory Stick Bus State
				This pin is connected to the bus state pin of the MS device. It is used
				to control the Bus States 0, 1, 2, and 3 (BS0, BS1, and BS3) of the
				MS device.
GPIO12 /	31	I/O8		This general purpose pin may be used either as input, edge sensitive
				interrupt input, or output. Custom firmware is required to activate this
				function.
MS_INS		IPU		Memory Stick Card Insertion GPIO
				This is a GPIO designated by the default software as the Memory
				Stick card detection pin and has a weak internal pull-up resistor.
MS_SCLK	13	O8		Memory Stick System Clock
				This pin is an output clock signal to the MS device.
MS_D[7:0]	20	I/O8PD		Memory Stick System Data In/Out
	19
	17			These pins are the bi-directional data signals for the MS device. In
	18			serial mode, the most significant bit (MSB) of each byte is
	32			transmitted first by either the memory stick controller MSC or the MS
	30			device on MS_D0.
	23
	24			MS_D0, MS_D2, and MS_D3 have weak pull-down resistors. MS_D1
				has a pull-down resistor if it is 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	I/O8PD		xD-Picture Card Data 7-0
	32
	33			These pins are the bi-directional data signals xD_D7 - xD_D0 and
	13			have weak internal pull-down resistors.
	17
	18
	19
	20
xD_ALE	23	O8PD		xD-Picture Card Address Strobe
				This pin is an 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.
SMSC USB4640/USB4640i			17		Revision 1.0 (06-01-09)

DATASHEET