XC161 Datasheet, PDF (130/419 Pages) Infineon Technologies AG – 16-Bit Single-Chip Microcontroller with C166SV2 Core Volume 2 (of 2): Peripheral Units

XC161 Derivatives
Peripheral Units (Vol. 2 of 2)
Capture/Compare Units
Compare
Match
TxOV
STAG >^_1
PL
&
Output
Value
Control
OUT Latch
MODy
Port Latch
0
MUX
1
Driver
Port Pin
Pm.n
ALTSEL0Pn ^Direction
CAPCOM Logic Port Logic
MCB05427
Figure 17-11 Port Output Block Diagram for Compare Modes
Note: A compare output signal is visible at the pin only in compare modes 1 or 3.
The output signal of a compare event can either be a 1, a 0, the complement of the
current level, or the previous level. The block ‘Output Value Control’ determines the
correct new level based on the compare event, the timer overflow signal, and the current
states of the Port and OUT latches. For the output toggle function (e.g. in compare
mode 1), the state of the output latch is read, inverted, and then written back.
The associated output pins either drives the port latch signal or the OUT signal, selected
by register ALTSEL (see Figure 17-11).
Note: If the port output latch is written to by software at the same time it would be altered
by a compare event, the software write will have priority. In this case the hardware-
triggered change will not become effective.
User’s Manual
CC12_X1, V2.1
17-26
V2.2, 2004-01