Rev. 5.00, 12/03, page 311 of 1088
9.2.3
Timer I/O Control Registers (TIOR)
Channel 0: TIOR0H
Channel 1: TIOR1
Channel 2: TIOR2
Channel 3: TIOR3H
Channel 4: TIOR4
Channel 5: TIOR5
Bit
:
7
6
5
4
3
2
1
0
IOB3
IOB2
IOB1
IOB0
IOA3
IOA2
IOA1
IOA0
Initial value :
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
Channel 0: TIOR0L
Channel 3: TIOR3L
Bit
:
7
6
5
4
3
2
1
0
IOD3
IOD2
IOD1
IOD0
IOC3
IOC2
IOC1
IOC0
Initial value :
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
Note:
When TGRC or TGRD is designated for buffer operation, this setting is invalid and the
register operates as a buffer register.
The TIOR registers are 8-bit registers that control the TGR registers. The TPU has eight TIOR
registers, two each for channels 0 and 3, and one each for channels 1, 2, 4, and 5. The TIOR
registers are initialized to H'00 by a reset and in hardware standby mode.
Care is required since TIOR is affected by the TMDR setting. The initial output specified by
TIOR is valid when the counter is stopped (the CST bit in TSTR is cleared to 0). Note also that, in
PWM mode 2, the output at the point at which the counter is cleared to 0 is specified.
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