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(17) Operation when Error Occurs during Phase Counting Mode Operation, and Operation
is Restarted in Normal Mode: Figure 12.112 shows an explanatory diagram of the case where an
error occurs in phase counting mode and operation is restarted in normal mode after re-setting.
1
RESET
2
TMDR
(PCM)
3
TIOR
(1 init
0 out)
5
TSTR
(1)
4
PFC
(MTU)
6
Match
7
Error
occurs
8
PFC
(PORT)
9
TSTR
(0)
10
TMDR
(normal)
11
TIOR
(1 init
0 out)
12
PFC
(MTU)
13
TSTR
(1)
MTU output
TIOC
*
A
TIOC
*
B
Port output
PEn
PEn
n=0 to 15
High-Z
High-Z
Figure 12.112 Error Occurrence in Phase Counting Mode, Recovery in Normal Mode
1.After a reset, MTU output is low and ports are in the high-impedance state.
2.Set phase counting mode.
3. Initialize the pins with TIOR.
(The example shows initial high output, with low output on
compare-match occurrence.)
4.Set MTU output with the PFC.
5.The count operation is started by TSTR.
6.Output goes low on compare-match occurrence.
7.An error occurs.
8.Set port output with the PFC and output the inverse of the active level.
9.The count operation is stopped by TSTR.
10.Set in normal mode.
11.Initialize the pins with TIOR.
12.Set MTU output with the PFC.
13.Operation is restarted by TSTR.
Summary of Contents for SH7041 Series
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