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ELAN DIGITAL SYSTEMS LTD.
LITTLE PARK FARM ROAD,
SEGENSWORTH WEST,
FAREHAM,
HANTS. PO15 5SJ.
TEL: (44) (0)1489 579799
FAX: (44) (0)1489 577516
e-mail: support@pccard.co.uk
website: http://www.pccard.co.uk
CF232 COMPACT FLASH™ CF+ CARD
USER’S GUIDE
Also covers CF232-5
Compact Flash is a trademark of Sandisk Corporation. All other Trademarks are duly acknowledged.
REVISION HISTORY
ISSUE PAGES DATE NOTES
1 8 20.08.2001 FIRST ISSUE
2 9 23.04.2002 H/W Rev3.00
3 9 24.05.2002 Electrical Specs Upd
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Table of Contents 1. OVERVIEW........................................................................................................................................3 2. ABOUT THE CF232 ..........................................................................................................................4 3. INSTALLING THE CF232 ...............................................................................................................5 3.1 DOS & WINDOWS 3.1X...............................
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1. OVERVIEW The CF232 card is an RS232 Serial card with the following features: • Tiny TypeI Compact Flash form factor for CF+ equipped PDAs, Handheld PCs, laptops etc. • DOS, Windows 3.1x, 95, 98, 98SE, Me, NT4, 2000, XP, CE, PocketPC compatible using O.S. standard drivers • Industry standard 16550 register set • Transmission rates up to 115.2K Baud as standard. • H/W Rev3.00 cards have switchable x1 or x8 baud rate giving up to 921Kbaud. • Works at 3.3V or 5V • Full hardware modem control line
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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 operat
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3. INSTALLING THE CF232 3.1 DOS & Windows 3.1x rd Operation in DOS or Windows 3.1 requires 3 party Card and Socket Services drivers to be properly installed and configured. Follow your software vendor’s instructions on how to do this. The CF232 requires no extra drivers to operate in DOS. Insertion of the card should create a familiar “happy beep” as the host software configures the card a standard DOS COM port. Resource allocation rd and troubleshooting is all down to the 3 party software and
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4. CF232 REGISTER INTERFACE Full details of the CF232’s register interface can be found in the VPU16550 data sheet, available at Elan’s website http://www.pccard.co.uk For reference, the CF232 and the CF232-5 both behave as a 5V card to the host system because Vs1 and Vs2 pins are no connects. This is to make the host default to 5V when possible, giving the highest RS232 output signals and therefore best noise margins. The Card Information Structure does not define any 3.3V tuples because some
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5. HARDWARE SPECIFICATION 5.1 PINOUT The CF232 is supplied with a 300mm long Type45 cable that terminates with a DB9 Male connector with female screwlocks (to match the port at the back of a PC) The pin-out below applies to both the CF232 card and the DB9 male connector on the supplied cable (the cable is pinned one-to-one). PIN NAME FUNCTION Data Carrier Detect input 1* DCD Receive Data input 2 RX Transmit Data output 3 TX Data Terminal Ready output 4 DTR GROUND 5 GND Data Set Ready input 6 DSR
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5.2 ELECTRICAL All figures quoted are typical parameters @ 25°C RS232 SIGNALS: Typical output level ±5.5V (open circuit voltages) ESD PROTECTION: All RS232 signal lines on the CF232 card are protected against electrostatic discharge (ESD) • 15kv - human body model • 8kv - IEC1000-4-2,contact discharge • 15kv - IEC1000-4-2,air-gap discharge UART CLOCK SPEED: 1.8432MHz, max baud rate 115.2KBaud On H/W Rev3.00 cards switch selectable Baud rate multiplier: x1: UART CLOCK is 1.8432MHz ->115.2KBaud m
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As a simple rule of thumb, using the standard serial drivers on a fast PC will allow throughput rates of 400-600KBits/sec although these rates can’t be guaranteed and will be application specific. 5.7 BAUD RATE SETTINGS The table below illustrates the common baud rate values available for each of the baud rate multiplier switch positions: HOST SETTING SWITCH = x1 SWITCH = x8 300 300 2400 1200 1200 9600 2400 2400 19200 4800 4800 38400 9600 9600 76800 19200 19200 153600 38400 38400 307200 57600 57
