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11-23
EVENT PROCESSOR ARRAY (EPA)
11.6 ENABLING THE EPA INTERRUPTS
To enable the interrupts, set the corresponding bits in the INT_MASK register (Figure 5-7 on
page 5-15). To enable the individual sources of the multiplexed PI (MC, MD), SPI (MH), and
OVRTM (Mx) interrupts, set the corresponding bits in the PI_MASK register (Figure 5-9 on page
5-17). Chapter 5, “Standard and PTS Interrupts,” discusses the interrupts in greater detail.
2WGR
AD
A/D Conversion, Waveform Generator Reload
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
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 state of the TB bit determines which timer is the reference timer and
which timer is the opposite timer.
0RTReset Timer
This bit controls whether the timer selected by the ROT bit will be reset.
1 = resets the timer selected by the ROT bit
0 = disables the reset function
COMP
x
_CON (Continued)
x
= 0–3 (8XC196MC, MH)
x
= 0–5 (8XC196MD)
Address:
Reset State:
See Table 11-3 on
page 11-3
00H
The EPA compare control (COMP
x
_CON) registers determine the function of the EPA compare
channels.
7 0
x
= 0, 2, 4 TB CE M1 M0 RE WGR ROT RT
7 0
x
= 1, 3, 5 TB CE M1 M0 RE AD ROT RT
Figure 11-11. EPA Compare Control (COMP
x
_CON) Registers (Continued)