DS-0027 Feb 06

External—Free Release

Page 3 of 66

OXCF950 rev B DATA SHEET

OXFORD SEMICONDUCTOR, INC.

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

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

SUMMARY OF DIFFERENCES BETWEEN OXCF950 AND OXCF950 REV B........................................... 2

CONTENTS................................................................................................................................................... 3

REVISION HISTORY..................................................................................................................................... 5

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

16C950 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’ (OFFSET 0XF8)..............................................................................20

5.5.2

CONFIGURATION STATUS REGISTER ‘CSR’ (OFFSET 0XFA)................................................................................ 21

5.5.3

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