Renesas R5S72641 Manual De Usuario
Section 11 Multi-Function Timer Pulse Unit 2
R01UH0134EJ0400 Rev. 4.00
Page 441 of 2108
Sep 24, 2014
SH7262 Group, SH7264 Group
11.3.1
Timer Control Register (TCR)
The TCR registers are 8-bit readable/writable registers that control the TCNT operation for each
channel. This module has a total of five TCR registers, one each for channels 0 to 4. TCR register
settings should be conducted only when TCNT operation is stopped.
channel. This module has a total of five TCR registers, one each for channels 0 to 4. TCR register
settings should be conducted only when TCNT operation is stopped.
Bit:
Initial value:
R/W:
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
CCLR[2:0]
CKEG[1:0]
TPSC[2:0]
Bit Bit
Name
Initial
Value R/W Description
Value R/W Description
7 to 5
CCLR[2:0]
000
R/W
Counter Clear 0 to 2
These bits select the TCNT counter clearing source.
See tables 11.4 and 11.5 for details.
See tables 11.4 and 11.5 for details.
4, 3
CKEG[1:0]
00
R/W
Clock Edge 0 and 1
These bits select the input clock edge. When the input
clock is counted using both edges, the input clock
period is halved (e.g. P
clock is counted using both edges, the input clock
period is halved (e.g. P
/4 both edges = P/2 rising
edge). If phase counting mode is used on channels 1
and 2, this setting is ignored and the phase counting
mode setting has priority. Internal clock edge selection
is valid when the input clock is P
and 2, this setting is ignored and the phase counting
mode setting has priority. Internal clock edge selection
is valid when the input clock is P
/4 or slower. When
P
/1, or the overflow/underflow of another channel is
selected for the input clock, although values can be
written, counter operation compiles with the initial value.
written, counter operation compiles with the initial value.
00: Count at rising edge
01: Count at falling edge
1x: Count at both edges
2 to 0
TPSC[2:0]
000
R/W
Time Prescaler 0 to 2
These bits select the TCNT counter clock. The clock
source can be selected independently for each channel.
See tables 11.6 to 11.9 for details.
source can be selected independently for each channel.
See tables 11.6 to 11.9 for details.
[Legend]
x: Don't
care