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USB2641-HZH
USB2640/USB2641 Ultra Fast USB 2.0 Multi-Format Flash Media Controller/USB Hub Combo Datasheet PRODUCT FEATURES General Description Features The SMSC USB2640/USB2641 is a USB 2.0 compliant, HiSpeed hub for USB port expansion with an attached mass storage class peripheral controller. The controller allows read/write capability to popular flash media formats from the following families: xD-Picture CardTM (xD)1 Memory StickTM (MS) Secure DigitalTM (SD) MultiMediaCardTM (MMC) The USB2640/USB2641 is a fully integrated, single chip solution providing USB expansion and integrated flash card media reader/writer capability of ultra high performance operation. Average sustained transfer rates exceeding 35 MB/s are possible if the media and host can support those rates. Highlights 48-pin QFN package Hub controller with internally connected ultra fast flash media reader/writer and 2 exposed downstream ports for external peripheral expansion Flash media reader/writer employs multiplexed card interfaces which are optimized for use with single card insertion combo sockets Hardware-controlled data flow architecture for all selfmapped media Optional support for external firmware access via SPI interface Single chip flash media controller Transaction translator (TT) in the hub supports operation of FS and LS peripherals Over 30 port configuration options Customizable vendor ID, product ID, language ID On board 24 MHz crystal driver circuit Optional external 24 MHz clock input GPIO configuration and polarity: Up to 8 GPIOs for special function use Internal card power FET 8051 8-bit microprocessor Internal regulator for 1.8V core operation Optimized pinout improves signal flow, easing implementation and allowing for improved signal integrity treatment Optimized for low latency interrupt handling Hub and flash media reader/writer configuration from a single source: External I2C ROM or external SPI ROM EEPROM update via USB Please see the USB2640/USB2641 Software Release Notes for additional software features Applications Printers Desktop and Mobile PCs Consumer A/V Media Players/Viewers Vista ReadyBoost™ 1.xD-Picture Card not applicable to USB2641. SMSC USB2640/USB2641 DATASHEET Revision 2.0 (10-03-08)
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