Renesas R8C series User Manual

R8C/1A Group, R8C/1B Group 14. Timers
Rev.1.30 Dec 08, 2006 Page 110 of 315
REJ09B0252-0130
Figure 14.2 TXMR Register
Timer X Mode Register
Symbol Address After Reset
TXMR
008Bh 00h
Bit Symbol Bit Name Function RW
INT1
_
____
/CNTR0 signal
polarity sw itch bit
(1)
P3_7/CNTR0
_
_______
select bit
NOTES :
1.
2. Refer to
14.1.6 Notes on Timer X
for precautions regarding the TXS bit.
RW
Timer X underflow flag Function varies depending on operating mode.
Operating mode select bit 2 0 : Other than pulse period measurement mode
1 : Pulse period measurement mode
TXEDG RW
Active edge judgment flag Function varies depending on operating mode.
b3 b2
Function varies depending on operating mode.
TXS
Timer X count start flag
(2)
0 : Stops counting.
1 : Starts counting.
b1 b0b7 b6 b5 b4
TXMOD0 RW
Operating mode select bits 0, 1
b1 b0
0 0 : Timer mode or pulse period measurement
mode
0 1 : Pulse output mode
1 0 : Event counter mode
1 1 : Pulse w idth measurement mode
TXMOD1 RW
The IR bit in the INT1IC register may be set to 1 (requests interrupt) w hen the R0EDG bit is rew ritten.
Refer to
12.5.5 Changing Interrupt Sources.
R0EDG RW
RW
TXOCNT
Function varies depending on operating mode.
RW
TXMOD2
TXUND RW

Renesas R8C series Specifications

General

Brand	Renesas
Model	R8C series
Category	Computer Hardware
Language	English