APPENDIX D. RABBIT 3000A INTERNAL I/O REGISTERS

Table D-1provides a list of all the Rabbit 3000A internal I/O registers.

Table D-1.

Rabbit 3000A Internal I/O Registers

 

 

 

 

 

 

 

Register Name

 

Mnemonic

I/O Address

R/W

Reset

 

 

 

 

 

 

Global Control/Status Register

 

GCSR

0x0000

R/W

11000000

 

 

 

 

 

 

Real Time Clock Control Register

 

RTCCR

0x0001

W

00000000

 

 

 

 

 

 

Real Time Clock Byte 0 Register

 

RTC0R

0x0002

R/W

xxxxxxxx

 

 

 

 

 

 

Real Time Clock Byte 1 Register

 

RTC1R

0x0003

R

xxxxxxxx

 

 

 

 

 

 

Real Time Clock Byte 2 Register

 

RTC2R

0x0004

R

xxxxxxxx

 

 

 

 

 

 

Real Time Clock Byte 3 Register

 

RTC3R

0x0005

R

xxxxxxxx

 

 

 

 

 

 

Real Time Clock Byte 4 Register

 

RTC4R

0x0006

R

xxxxxxxx

 

 

 

 

 

 

Real Time Clock Byte 5 Register

 

RTC5R

0x0007

R

xxxxxxxx

 

 

 

 

 

 

Watchdog Timer Control Register

 

WDTCR

0x0008

W

00000000

 

 

 

 

 

 

Watchdog Timer Test Register

 

WDTTR

0x0009

W

00000000

 

 

 

 

 

 

Global Clock Modulator 0 Register

 

GCM0R

0x000A

W

00000000

 

 

 

 

 

 

Global Clock Modulator 1 Register

 

GCM1R

0x000B

W

00000000

 

 

 

 

 

 

Secondary Watchdog Timer Register

 

SWDTR

0x000C

W

11111111

 

 

 

 

 

 

Global Power Save Control Register

 

GPSCR

0x000D

W

00000000

 

 

 

 

 

 

Global Output Control Register

 

GOCR

0x000E

W

00000000

 

 

 

 

 

 

Global Clock Double Register

 

GCDR

0x000F

W

00000000

 

 

 

 

 

 

Global ROM Configuration Register

 

GROM

0x002C

R

0xx00000

 

 

 

 

 

 

Global RAM Configuration Register

 

GRAM

0x002D

R

0xx00000

 

 

 

 

 

 

Global CPU Configuration Register

 

GCPU

0x002E

R

0xx00001

 

 

 

 

 

 

Global Revision Register

 

GREV

0x002F

R

0xx00001

 

 

 

 

 

 

MMU Instruction/Data Register

 

MMIDR

0x0010

R/W

00000000

 

 

 

 

 

 

User’s Manual

327

Page 336
Image 336
Jameco Electronics 2000 Appendix D. Rabbit 3000A Internal I/O Registers, Table D-1 Rabbit 3000A Internal I/O Registers