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You may also be interested in
PCMCIA card, UART, Software, Interface software, PCMCIA reader
Text version of the page
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Elan Digital Systems Ltd.
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VMB5000 Versatile Mobile Bridge Product Datasheet ES335
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11 VMB5000 Overview |
| 1.1 Introduction ~|
The VMB5000 is a highly integrated PCMCIA / CF devîce that has been spccially designed for chip-to-chip bridging using either sériai or parallel bit-
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Each function can also be conllgurctl as 16550+ UART device with support for auto flow eontrol and Smart Card modes (T=0/T=1), or as a flexible sériai controller offering support for popular synchronous sériai bus protocols such as SPI,I2C, SDand 1-Wire.
The VMB5000 supports both 8 and 16-bit host interface transi ers. making burst data moves at up to 2.6MBytcs sec (>20Mbit/sec) possible. This opens the way for PCMCIA or CF cards that can support 3'J or 4lh Génération wireless data rates and beyond, even on PDAs.
To sustain such high ihroLighput rates, the VMB5000 offers separate 16KByte TX and RX FIFOs on
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The device offers two separate functions, one aimed at high speed data streaming and the other aimed at médium speed eontrol and bridging uses.
For ultimate flexibility Function 0 includes a unique 2 Port USB host controller that allows Full Speed (]2Mbits/scc) USB target devices to be bridged via the VMB5000 to the PCMCIA / CF bus. This unique combination of a USB host controller on the
 eontrol 1er.
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PCMCIA/CF bus, avoids the need to target 32-bit Cardbus cards with their inherently more complex, tcclinically risky and power hungry interfaces, and which preclude use in PDAs and use of 5V from the host.
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■jnctioi: with the USB
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Funetion 0 also supports a parallel access 16550 UART mode, suitable for use with a micro controller. Function 1 allows bridging to a child CF module to make Combi card design easy, perfect for WLAN + 3G dual rôle cards.
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