USB4640I

USB4640/USB4640i High Speed Inter-Chip (HSIC) USB 2.0 Hub and Flash Media Controller PRODUCT FEATURES General Description The SMSC USB4640/USB4640i is a Hi-Speed HSIC USB hub and card reader combo solution with an upstream port compliant to HSIC 1.0, a supplement to the USB 2.0 specification. The two downstream ports are compliant with the USB 2.0 specification. High Speed Inter-Chip (HSIC) is a digital interconnect bus that enables the use of USB technology as a low-power chip-to-chip interconnect at speeds up to 480 Mb/s. The HSIC interface is an industry standard 2-pin digital interface which uses standard USB software. The SMSC USB4640/USB4640i provides an ultra fast interface between an HSIC enabled host and today’s popular flash media formats. The controller allows read/write capability to flash media from the following families: – – – – Secure DigitalTM (SD) MultiMediaCardTM (MMC) Memory Stick® (MS) xD Picture CardTM (xD)1 Features „ Datasheet „ „ „ „ „ The USB4640/USB4640i offers a versatile, cost-effective, and energy-efficient hub controller with 2 downstream USB 2.0 ports. This combo solution leverages SMSC’s innovative technology that delivers industry-leading data throughput in mixed-speed USB environments. Average sustained transfer rates exceeding 35 MB/s are possible2. Highlights „ „ „ „ Compliance with the following flash media card specifications SD 2.0 / MMC 4.2 / MS 1.43 / MS-Pro 1.02 / MS-Pro-HG 1.01 / MS-Duo 1.10 / xD 1.2 Low-power digital HSIC ...