Renesas R8C/15 Technical Information Seite 107

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Seitenansicht 106
R8C/14 Group, R8C/15 Group 13. Timers
Rev.2.10 Jan 19, 2006 Page 93 of 253
REJ09B0164-0210
Figure 13.7 TXMR Register in Pulse Width Measurement Mode
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)
[INT1]
_
______
RW
0 : Rising edge
1 : Falling edge
NOTES :
1.
2.
11
The IR bit in the INT1IC register may be set to “1” (requests interrupt) when the R0EDG bit is rew ritten.
Refer to
20.2.5 Changing Interrupt Factor
.
R0EDG
RW
TXOCNT RW
TXMOD2 Set to “0” in pulse width measurement mode
TXMOD0 RWOperating Mode Select Bit 0, 1
b1 b0
1 1 : Pulse width measurement mode
TXMOD1 RW
b0
0000
b7 b6 b5 b4
Set to “0” in pulse width measurement mode
RW
b3 b2
[CNTR0]
0 : MeasuresL” level width
1 : MeasuresH level width
TXS
Timer X Count Start Flag
(2)
0 : Stops counting
1 : Starts counting
b1
Refer to
20.4.2 Timer X
for precautions on the TXS bit.
Set to “0” in pulse width measurement mode
Set to “0” in pulse width measurement mode
RW
TXUND RW
TXEDG
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