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C-19
REGISTERS
EPAx_CON
3 RE Re-enable
Re-enable applies to the compare mode only. It allows a compare event
to continue to execute each time the event-time register (EPA
x
_TIME)
matches the reference timer rather than only upon the first time match.
0 = compare function is disabled after a single event
1 = compare function always enabled
2 WGR
AD
Waveform Generator Reload; A/D Conversion
The function of this bit depends on the EPA channel.
For EPA capture/compare channels 0, 2, 4:
The WGR bit allows you to use the EPA activities to cause the reload
of new values in the waveform generator.
0 = no action
1 = enables waveform generator reload
For EPA capture/compare channels 1, 3, 5:
The AD bit allows you to use the EPA activities to start an A/D
conversion that has been previously set up in the A/D control
registers.
0 = causes no A/D action
1 = starts an A/D conversion on an output compare
1 ROT Reset Opposite Timer
Controls different functions for capture and compare modes.
In Capture Mode:
0 = causes no action
1 = resets the opposite timer
In Compare Mode:
Selects the timer that is to be reset if the RT bit is set.
0 = selects the reference timer for possible reset
1 = selects the opposite timer for possible reset
The TB bit (bit 7) selects which is the reference timer and which is the
opposite timer.
EPA
x
_CON (Continued)
x
= 0–1 (8XC196MH)
x
= 0–3 (8XC196MC)
x
= 0–5 (8XC196MD)
Address:
Reset State:
Tabl e C-4
The EPA control (EPA
x
_CON) registers control the functions of their assigned capture/compare
channels.
7 0
x
= 0, 2, 4 TB CE M1 M0 RE WGR ROT ON/RT
7 0
x
= 1, 3, 5 TB CE M1 M0 RE AD ROT ON/RT
Bit
Number
Bit
Mnemonic
Function