Page 2

OXCF950 DATA SHEET V1.1

OXFORD SEMICONDUCTOR LTD.

FEATURES.....................................................................................................................................................................................1

DESCRIPTION...............................................................................................................................................................................1

CONTENTS.....................................................................................................................................................................................2

1 BLOCK DIAGRAM..............................................................................................................................................................5

2 PIN INFORMATION............................................................................................................................................................ 6

3 PIN DESCRIPTIONS ..........................................................................................................................................................6

4 CONFIGURATION & OPERATION...............................................................................................................................9

5 PCMCIA / CF TARGET CONTROLLER....................................................................................................................10

5.1

OPERATION........................................................................................................................................................................ 10

5.2

CONFIGURATION SPACE (CARD INFORMATION STRUCTURE) ................................................................................. 10

5.2.1

LOCAL BUS MODE SPACE MAP .................................................................................................................................. 10

5.2.2

NORMAL MODE SPACE MAP....................................................................................................................................... 11

5.3

ACCESS TO IO FUNCTION ............................................................................................................................................... 11

5.3.1

ACCESS TO INTERNAL UART...................................................................................................................................... 11

5.3.2

ACCESS TO LOCAL BUS .............................................................................................................................................. 11

5.3.3

ACCESSING LOCAL CONFIGURATION REGISTERS ................................................................................................. 12

5.4

CF / PCMCIA INTERRUPT................................................................................................................................................. 14

5.4.1

INTERRUPT GENERATION ........................................................................................................................................... 14

5.4.2

INTERRUPT SOURCES................................................................................................................................................. 15

5.5

CF/PCMCIA FUNCTION CONFIGURATION REGISTERS ............................................................................................... 15

5.5.1

CONFIGURATION OPTIONS REGISTER ‘COR’ (OF FSET 0XF8) ............................................................................... 16

5.5.2

CONFIGURATION STATUS REGISTER ‘C SR’ (OFFSET 0XFA) ................................................................................. 16

5.5.3

PIN REPLACEMENT REGISTER ‘PRR’ (OFFSET 0 XFC) ............................................................................................ 17

5.5.4

SOCKET AND COPY REGISTER ‘SCR’ (OFFSET 0XFE) ............................................................................................ 18

5.6

CARD INFORMATION STRUCTURE................................................................................................................................. 19

5.6.1

LOCAL BUS MODE......................................................................................................................................................... 19

5.6.2

NORMAL MODE............................................................................................................................................................. 20

6 INTERNAL 950 UART......................................................................................................................................................23

6.1

MODE SELECTION............................................................................................................................................................. 23

6.1.1

450 MODE....................................................................................................................................................................... 23

6.1.2

550 MODE....................................................................................................................................................................... 23

6.1.3

750 MODE....................................................................................................................................................................... 23

6.1.4

650 MODE....................................................................................................................................................................... 23

6.1.5

950 MODE....................................................................................................................................................................... 23

6.2

REGISTER DESCRIPTION TABLES ................................................................................................................................. 25

6.3

RESET CONFIGURATION ................................................................................................................................................. 28

6.3.1

HOST RESET .................................................................................................................................................................. 28

6.3.2

SOFTWARE RESET ....................................................................................................................................................... 28

6.4

TRANSMITTER & RECEIVER FIFOS................................................................................................................................ 28

6.4.1

FIFO CONTROL REGISTER ‘FCR’................................................................................................................................ 29

6.5

LINE CONTROL & STATUS............................................................................................................................................... 30

6.5.1

FALSE START BIT DETECTION .................................................................................................................................... 30

6.5.2

LINE CONTROL REGISTER ‘LCR’................................................................................................................................ 30

6.5.3

LINE STATUS REGISTER ‘LSR’.................................................................................................................................... 30

6.6

INTERRUPTS & SLEEP MODE ......................................................................................................................................... 32

6.6.1

INTERRUPT ENABLE REGISTER ‘IER’ ........................................................................................................................ 32

6.6.2

INTERRUPT STATUS REGISTER ‘ISR’ ........................................................................................................................ 33