Renesas R8C/15 Informacje Techniczne Strona 99

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R8C/14 Group, R8C/15 Group 13. Timers
Rev.2.10 Jan 19, 2006 Page 85 of 253
REJ09B0164-0210
Figure 13.2 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
20.4.2 Timer X
for precautions on 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 Reception 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 Bit 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 width 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
20.2.5 Changing Interrupt Factor.
R0EDG RW
RW
TXOCNT
Function varies depending on operating mode
RW
TXMOD2
TXUND RW
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