Intel 8XC196NT User Manual page 521

8XC196NT USER'S MANUAL
EPAx_CON
EPA x _CON (Continued)
x = 0–9
The EPA control (EPA x _CON) registers control the functions of their assigned capture/compare
channels. The registers for EPA0, EPA2, and EPA4–9 are identical. The registers for EPA1 and EPA3
have an additional bit, the remap bit. This added bit (bit 8) requires an additional byte, so EPA1_CON
and EPA3_CON must be addressed as words, while the others can be addressed as bytes.
15
x = 1, 3
—
7
TB
7
x = 0, 2, 4–9
TB
Bit Bit
Number Mnemonic
5:4 M1:0
3 RE
2 AD
†
These bits apply to the EPA1_CON and EPA3_CON registers only.
C-26
— — —
CE M1 M0
CE M1 M0
EPA Mode Select
In capture mode, specifies the type of event that triggers an input capture.
In compare mode, specifies the action that the EPA executes when the
reference timer matches the event time.
M1 M0 Capture Mode Event
0 0 no capture
0 1 capture on falling edge
1 0 capture on rising edge
1 1 capture on either edge
M1 M0 Compare Mode Action
0 0 no output
0 1 clear output pin
1 0 set output pin
1 1 toggle output pin
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
A/D Conversion
Allows the EPA to start an A/D conversion that has been previously set up
in the A/D control registers. To use this feature, you must select the EPA
as the conversion source in the AD_CONTROL register.
0 = causes no A/D action
1 = EPA capture or compare event triggers an A/D conversion
Address:
Reset State:
— —
RE AD ROT
RE AD ROT
Function
Table C-5
8
— RM
0
ON/RT
0
ON/RT