C167CS datasheet(333/517 Pages) INFINEON

333 / 517 page

C167CS

Derivatives

The Capture/Compare Units

User’s Manual

16-15

V2.0, 2000-07

Figure 16-6

Compare Mode 0 and 1 Block Diagram

Note: The port latch and pin remain unaffected in compare mode 0.

In the example below, the compare value in register CCx is modified from cv1 to cv2 after

compare events #1 and #3, and from cv2 to cv1 after events #2 and #4, etc. This results

in periodic interrupt requests from timer Ty, and in interrupt requests from register CCx

which occur at the time specified by the user through cv1 and cv2.

Figure 16-7

Timing Example for Compare Modes 0 and 1

MCB02016

Compare Reg. CCx

Comparator

CAPCOM Timer Ty

CCMODx

Port

Latch

Toggle

(Mode 1)

CCxIO

Interrupt

Request

Interrupt

Request

Input

Clock

x = 31...0

y = 0, 1, 7, 8

not for CC27...CC24

MCB02017

Contents of Ty

TyIR

CCxIR

TyIR

CCxIR

TyIR

Interrupt

Requests:

Event #1

CCx: = cv2

Event #2

CCx: = cv1

Event #3

CCx: = cv2

Event #4

CCx: = cv1

x = 31...0

y = 0, 1, 7, 8

Output pin CCxIO only effected in mode 1. No changes in mode 0.

0000

Reload Value<TyREL>

Compare Value cv1

Compare Value cv2

FFFF

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