ELANsat Tech CF232-5 manual About the CF232

2. ABOUT THE CF232

The CF232 card is an RS232 serial card with Elan’s own 16550 compatible UART ASIC device, called the VPU16550. The serial data and control lines are buffered using ESD protected RS232 drivers.

Industry standard baud rates up to 115.2K baud are supported, together with 16-byte deep TX and RX FIFOs. On H/W Rev3.00 cards, a small switch is located at the back edge of the card, which allows selection of “x1” or “x8” baud rate multiplier. This feature allows up to 921KBaud operation without needing special device drivers on the host (in x8 mode you simply multiply the setting shown on the host by 8 to get the real serial data rate e.g. 19200Baud set on host with x8 mode gives 153600Baud true rate in hardware). See section 5 for the switch settings.

For further information please refer to the VPU16550 data sheet available from our website, http://www.pccard.co.uk

The CF232 conforms to the industry standard Compact Flash+ interface that allows connection of peripherals to the system bus of a laptop, handheld PC or PDA. The CF+ specification extends the earlier memory-only Compact Flash interface to allow I/O devices and extra power for the card. The CF232 is an I/O type device and therefore requires a CF+ capable slot.

Elan Digital Systems Ltd. 4 CF232 USER’S GUIDE