R01UH0823EJ0100 Rev.1.00
Page 494 of 1823
Jul 31, 2019
RX23W Group
23. Multi-Function Timer Pulse Unit 2 (MTU2a)
23.2.6
Timer Buffer Operation Transfer Mode Register (TBTM)
MTU0.TBTM
MTU3.TBTM, MTU4.TBTM
The MTU has a total of three TBTM registers, one each for MTU0, MTU3, and MTU4.
The TBTM register specifies the timing for transferring data from the buffer register to the timer general register in
PWM mode.
This bit specifies the timing for transferring data from the TGRC register to the TGRA register in each channel when
they are used together for buffer operation. When a channel is not set to PWM mode, do not set the TTSA bit in the
channel to 1.
This bit specifies the timing for transferring data from the TGRD register to the TGRB register in each channel when
they are used together for buffer operation. When a channel is not set to PWM mode, do not set the TTSB bit in the
channel to 1.
This bit specifies the timing for transferring data from the MTU0.TGRF register to the MTU0.TGRE register when they
are used together for buffer operation. In MTU3 and MTU4, this bit is reserved and read as 0. The write value should be
0. When MTU0 is not set to PWM mode, do not set the TTSE bit to 1.
Address(es): MTU0.TBTM 000D 0B26h
b7
b6
b5
b4
b3
b2
b1
b0
—
—
—
—
—
TTSE
TTSB
TTSA
Value after reset:
0
0
0
0
0
0
0
0
Address(es): MTU3.TBTM 000D 0A38h, MTU4.TBTM 000D 0A39h
b7
b6
b5
b4
b3
b2
b1
b0
—
—
—
—
—
—
TTSB
TTSA
Value after reset:
0
0
0
0
0
0
0
0
Bit
Symbol
Bit Name
Description
R/W
b0
Timing Select A
0: When compare match A occurs in each channel, data is transferred
from TGRC to TGRA
1: When TCNT is cleared in each channel, data is transferred from TGRC
to TGRA
R/W
b1
Timing Select B
0: When compare match B occurs in each channel, data is transferred
from TGRD to TGRB
1: When TCNT is cleared in each channel, data is transferred from TGRD
to TGRB
R/W
b2
Timing Select E
0: When compare match E occurs in MTU0, data is transferred from
MTU0.TGRF to MTU0.TGRE
1: When MTU0.TCNT is cleared in MTU0, data is transferred from
MTU0.TGRF to MTU0.TGRE
R/W
b7 to b3
—
Reserved
These bits are read as 0. The write value should be 0.
R/W