Rabbit Rabbit 4000, User Manual

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110 Rabbit 4000 Microprocessor User’s Manual
13.1.2 Registers
13.2 Dependencies
13.2.1 I/O Pins
The output of Timer A does not come out directly on any of the I/O pins. It can be used to
control when the output occurs on Parallel Ports D–E, and can affect the output times of
Serial Ports A–F and the PWM.
13.2.2 Clocks
The timers in Timer A can be clocked by either perclk or perclk/2, as selected in TAPR. In
addition, timers A2–A7 can be clocked by the output of timer A1 by selecting that option
in TACSR.
13.2.3 Other Registers
Register Name Mnemonic I/O Address R/W Reset
Timer A Control/Status Register TACSR 0x00A0 R/W 00000000
Timer A Prescale Register TAPR 0x00A1 R/W xxxxxxx1
Timer A Time Constant 1 Register TAT1R 0x00A3 R/W xxxxxxxx
Timer A Control Register TACR 0x00A4 R/W 00000000
Timer A Time Constant 2 Register TAT2R 0x00A5 R/W xxxxxxxx
Timer A Time Constant 8 Register TAT8R 0x00A6 R/W xxxxxxxx
Timer A Time Constant 3 Register TAT3R 0x00A7 R/W xxxxxxxx
Timer A Time Constant 9 Register TAT9R 0x00A8 R/W xxxxxxxx
Timer A Time Constant 4 Register TAT4R 0x00A9 R/W xxxxxxxx
Timer A Time Constant 10 Register TAT10R 0x00AA R/W xxxxxxxx
Timer A Time Constant 5 Register TAT5R 0x00AB R/W xxxxxxxx
Timer A Time Constant 6 Register TAT6R 0x00AD R/W xxxxxxxx
Timer A Time Constant 7 Register TAT7R 0x00AF R/W xxxxxxxx
Register Function
GCSR Select peripheral clock mode.