CRA (0XE): |
BIT | Bit Name | Function |
0 | STARTA | 1=START TIMER A, 0=STOP TIMER A. This bit is
automatically reset when TIMER A underflow occurs during
one-shot mode. |
1 | PRB6 ON | 1=TIMER A output appears on PRB6, O=PRB6 normal port
operation. |
2 | OUT-A MODE | 1=TOGGLE output applied on port PRB6,
0=PULSE output applied on port PRB6. |
3 | RUN-A MODE | 1=ONE-SHOT TIMER A operation,
0=CONTINUOUS TIMER A operation. |
4 | LOADA | 1=FORCE LOAD on TIMER A (this is a STROBE input, there
is no data storage, bit 4 will always read back a zero
and writing a zero has no effect). |
5 | TMRA INMODE | 1=TIMER A counts positive CNTA transitions,
0=TIMER A counts internal C1MHZ pulses. |
6 | SPA MODE | 1=SERIAL A PORT output mode (CNTA sources shift clock),
0=SERIAL A PORT input mode (external shift clock on CNTA) |
7 | TODA IN | 1=50 Hz operation. C7MHZ divided down by 101339 to generate TODA input of 10 Hz.
0=60 Hz operation. C7MHZ divided down by 102273 to generate TODA input of 10 Hz. |