Section 9 Multi-Function Timer Pulse Unit 2 (MTU2)
Rev. 3.00 Sep. 27, 2007 Page 343 of 758
REJ09B0243-0300
9.7.15
Reset Sync PWM Mode Buffer Operation and Compare Match Flag
When setting buffer operation for reset sync PWM mode, set the BFA and BFB bits in TMDR_4
to 0. The TIOC4C pin will be unable to produce its waveform output if the BFA bit in TMDR_4 is
set to 1.
In reset sync PWM mode, the channel 3 and channel 4 buffers operate in accordance with the BFA
and BFB bit settings of TMDR_3. For example, if the BFA bit in TMDR_3 is set to 1, TGRC_3
functions as the buffer register for TGRA_3. At the same time, TGRC_4 functions as the buffer
register for TGRA_4.
The TGFC bit and TGFD bit in TSR_3 and TSR_4 are not set when TGRC_3 and TGRD_3 are
operating as buffer registers.
Figure 9.120 shows an example of operations for TGR_3, TGR_4, TIOC3, and TIOC4, with
TMDR_3's BFA and BFB bits set to 1, and TMDR_4's BFA and BFB bits set to 0.
TGRA_3
TGRC_3
TGRB_3, TGRA_4,
TGRB_4
TGRD_3, TGRC_4,
TGRD_4
H'0000
TIOC3A
TIOC3B
TIOC3D
TIOC4A
TIOC4C
TIOC4B
TIOC4D
TGFC
TGFD
TGRA_3,
TGRC_3
TGRB_3, TGRD_3,
TGRA_4, TGRC_4,
TGRB_4, TGRD_4
Buffer transfer with
compare match A3
TCNT3
Not set
Not set
Point a
Point b
Figure 9.120 Buffer Operation and Compare-Match Flags
in Reset Synchronous PWM Mode
Содержание SH7124 R5F7124
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