OXCF950 Datasheet, PDF (3/66 Pages) Oxford Semiconductor – Single full-duplex asynchronous channel 128-byte deep transmitter / receiver FIFO

OXFORD SEMICONDUCTOR LTD.
OXCF950 rev B DATA SHEET V 1.0
CONTENTS
FEATURES.....................................................................................................................................................................................1
DESCRIPTION...............................................................................................................................................................................1
SUMMARY OF DIFFERENCES BETWEEN OXCF950 AND OXCF950 REV B.....................................................2
CONTENTS.....................................................................................................................................................................................3
1 BLOCK DIAGRAM ..............................................................................................................................................................6
2 PIN INFORMATION ............................................................................................................................................................ 7
3 PIN DESCRIPTIONS ..........................................................................................................................................................8
4 CONFIGURATION & OPERATION.............................................................................................................................11
4.1 MODE SELECTION............................................................................................................................................................. 11
4.1.1 GENERIC MODE............................................................................................................................................................ 11
4.1.2 C950 MODE .................................................................................................................................................................... 11
4.1.3 NORMAL/LOCAL BUS MODES...................................................................................................................................... 11
4.2 PCMCIA/CF OPERATION .................................................................................................................................................. 11
5 PCMCIA / CF TARGET CONTROLLER....................................................................................................................13
5.1 OPERATION........................................................................................................................................................................ 13
5.2 CONFIGURATION SPACE (CARD INFORMATION STRUCTURE) ................................................................................. 13
5.2.1 LOCAL BUS MODE SPACE MAP .................................................................................................................................. 13
5.2.2 NORMAL MODE SPACE MAP....................................................................................................................................... 14
5.3 ACCESS TO IO FUNCTION ............................................................................................................................................... 14
5.3.1 ACCESS TO INTERNAL UART ...................................................................................................................................... 14
5.3.2 ACCESS TO LOCAL BUS .............................................................................................................................................. 14
5.3.3 ACCESSING LOCAL CONFIGURATION REGISTERS ................................................................................................. 15
5.4 CF / PCMCIA INTERRUPT................................................................................................................................................. 19
5.4.1 INTERRUPT GENERATION ........................................................................................................................................... 19
5.4.2 INTERRUPT SOURCES................................................................................................................................................. 19
5.5 CF/PCMCIA FUNCTION CONFIGURATION REGISTERS ............................................................................................... 20
5.5.1 CONFIGURATION OPTIONS REGISTER ‘COR’ (OF FSET 0XF8) ............................................................................... 20
5.5.2 CONFIGURATION STATUS REGISTER ‘CSR’ (OFFSET 0XFA) ................................................................................. 21
5.5.3 PIN REPLACEMENT REGISTER ‘PRR’ (OFFSET 0 XFC) ............................................................................................ 22
5.5.4 SOCKET AND COPY REGISTER ‘SCR’ (OFFSET 0XFE) ............................................................................................ 23
5.6 CARD INFORMATION STRUCTURE................................................................................................................................. 23
5.6.1 LOCAL BUS MODE......................................................................................................................................................... 23
5.6.2 NORMAL MODE............................................................................................................................................................. 25
5.6.3 GENERIC NORMAL MODE............................................................................................................................................ 27
6 INTERNAL 950 UART......................................................................................................................................................30
6.1 MODE SELECTION............................................................................................................................................................. 30
6.1.1 450 MODE....................................................................................................................................................................... 30
6.1.2 550 MODE....................................................................................................................................................................... 30
6.1.3 750 MODE....................................................................................................................................................................... 30
6.1.4 650 MODE....................................................................................................................................................................... 30
6.1.5 950 MODE....................................................................................................................................................................... 30
6.2 REGISTER DESCRIPTION TABLES ................................................................................................................................. 32
6.3 RESET CONFIGURATION ................................................................................................................................................. 35
6.3.1 HOST RESET .................................................................................................................................................................. 35
6.3.2 SOFTWARE RESET ....................................................................................................................................................... 35
6.4 TRANSMITTER & RECEIVER FIFOS................................................................................................................................ 35
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