Section 9 Multi-Function Timer Pulse Unit 2 (MTU2)
Rev. 3.00 Sep. 27, 2007 Page 209 of 758
REJ09B0243-0300
9.3.12
Timer Counter (TCNT)
The TCNT counters are 16-bit readable/writable counters. The MTU2 has eight TCNT counters,
one each for channels 0 to 4 and three (TCNTU_5, TCNTV_5, and TCNTW_5) for channel 5.
The TCNT counters are initialized to H'0000 by a reset.
Bit:
Initial value:
R/W:
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
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
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Note:
The TCNT counters must not be accessed in eight bits; they should always be accessed in 16 bits.
9.3.13
Timer General Register (TGR)
The TGR registers are 16-bit readable/writable registers. The MTU2 has 21 TGR registers, six for
channel 0, two each for channels 1 and 2, four each for channels 3 and 4, and three for channel 5.
TGRA, TGRB, TGRC, and TGRD function as either output compare or input capture registers.
TGRC and TGRD for channels 0, 3, and 4 can also be designated for operation as buffer registers.
TGR buffer register combinations are TGRA and TGRC, and TGRB and TGRD.
TGRE_0 and TGRF_0 function as compare registers. When the TCNT_0 count matches the
TGRE_0 value, an A/D converter start request can be issued. TGRF can also be designated for
operation as a buffer register. TGR buffer register combination is TGRE and TGRF.
TGRU_5, TGRV_5, and TGRW_5 function as compare match, input capture, or external pulse
width measurement registers.
Bit:
Initial value:
R/W:
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Note:
The TGR registers must not be accessed in eight bits; they should always be accessed in 16 bits.
TGR registers are initialized to H'FFFF.
Содержание SH7124 R5F7124
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Страница 68: ...Section 2 CPU Rev 3 00 Sep 27 2007 Page 48 of 758 REJ09B0243 0300 ...
Страница 108: ...Section 5 Exception Handling Rev 3 00 Sep 27 2007 Page 88 of 758 REJ09B0243 0300 ...
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Страница 400: ...Section 9 Multi Function Timer Pulse Unit 2 MTU2 Rev 3 00 Sep 27 2007 Page 380 of 758 REJ09B0243 0300 ...
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