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User’s Manual 277
B.1.1 Rabbit Internal I/O Registers
Table B-2 summarizes the reset state of the new I/O registers added in the Rabbit 3000A
revision. Table B-3 summarizes the reset state of the existing I/O registers with new features.
Table B-2. Reset State of New Rabbit 3000A I/O Registers
Register Name Mnemonic
I/O
Address
R/W Reset
Secondary Watchdog Timer Register SWDTR 0x000C W 11111111
RAM Segment Register RAMSR 0x0448 W 00000000
Write Protect Control Register WPCR 0x0440 W 00000000
Stack Limit Control Register STKCR 0x0444 W 00000000
Stack Low Limit Register STKLLR 0x0445 W xxxxxxxx
Stack High Limit Register STKHLR 0x0446 W xxxxxxxx
Write Protect Low Register WPLR 0x0460 W 00000000
Write Protect High Register WPHR 0x0461 W 00000000
Write Protect Segment A Register WPSAR 0x0480 W 00000000
Write Protect Segment A Low Register WPSALR 0x0481 W 00000000
Write Protect Segment A High Register WPSAHR 0x0482 W 00000000
Write Protect Segment B Register WPSBR 0x0484 W 00000000
Write Protect Segment B Low Register WPSBLR 0x0485 W 00000000
Write Protect Segment B High Register WPSBHR 0x0486 W 00000000
Real Time Clock User Enable Register RTUER 0x0300 W 00000000
Slave Port User Enable Register SPUER 0x0320 W 00000000
Parallel Port A User Enable Register PAUER 0x0330 W 00000000
Parallel Port B User Enable Register PBUER 0x0340 W 00000000
Parallel Port C User Enable Register PCUER 0x0350 W 00000000
Parallel Port D User Enable Register PDUER 0x0360 W 00000000
Parallel Port E User Enable Register PEUER 0x0370 W 00000000
Parallel Port F User Enable Register PFUER 0x0338 W 00000000
Parallel Port G User Enable Register PGUER 0x0348 W 00000000
Input Capture User Enable Register ICUER 0x0358 W 00000000
I/O Bank User Enable Register IBUER 0x0380 W 00000000
PWM User Enable Register PWUER 0x0388 W 00000000
Quad Decode User Enable Register QDUER 0x0390 W 00000000