DESCRIPTION

   The OXCF950 rev B is a low cost asynchronous 16-bit PC card (henceforth referred to as PCMCIA) or Compact Flash (henceforth referred to as CF) UART (and Local Bus) device. Local Bus Selection is performed by use of a MODE pin. Note that Local Bus mode uses indirect addressing, which is only supported by PCMCIA.

FEATURES

• Single full-duplex asynchronous channel

• 128-byte deep transmitter / receiver FIFO

• Fully software compatible with industry standard

   16C550 type UARTs

• Readable FIFO levels

• System clock up to 60MHz

• Flexible clock prescaler from 1 to 31.875

• 9-bitdata framing as well as 5,6,7 and 8

• Detection of bad data in the receiver FIFO

• Automated in-band flow control using programmable

   Xon/Xoff characters

• Transmitter and receiver can be disabled

• Low power CMOS

• 3.3V operation, 5V tolerant I/O

• Extended temperature range –40C to +105C

• Software compatible with OXCF950

• 16C950 mode for local bus applications

• Generic embedded driver compatibility mode

• Programmable by external MicrowireTM EEPROM

   (EEPROM programmed via Oxford Semiconductor

   utilities).

• Extremely low power consumption by use of

   asynchronous UART core and power down (sleep)

   modes

• Range of packages -Ultra small 48 pin TQFP package

   or a 48 ball TFBGA.

• Supports all UART types 450 up to 950 (fully

   programmable)

• CF+ Compliant (Revision 1.4).

• 16-bit PC Card Compliant (PCMCIA Revision 7.1)

• 8 bit Local Bus interface included for PCMCIA

   applications

• 2 Multi-purpose I/O pins which can be configured as

   interrupt inputs