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CHAPTER 16 PROGRAMMABLE PULSE GENERATOR
PCSRHn
Initial value:
PCSRLn
Initial value:
W : Write only
x : undefined
The PPG Period Setting registers come with buffers. Transfers from the buffers to the counter take place
automatically upon counter borrow.
After the PPG Period Setting registers have been written, be sure to set PPG Duty Setting registers
PDUT.
■ PPG Duty Setting Register (PDUTn)
The PPG Duty Setting Register (PDUTn) sets the duty of the PPG output waveform.
PDUTHn
Initial value:
PDUTLn
Initial value:
W : Write only
x : undefined
The PPG Duty Setting Registers are buffered. Transfers from the buffers to the counter take place
automatically upon counter borrow.
Set a value smaller than the setting of PPG Period Setting register PCSR in a PPG Duty Setting register.
If the same value is set in a PPG Duty Setting register as is set in PPG Period Setting register PCSR, then
• "H" is always output to (OSEL="0") at normal polarity time.
• "L" is always output to (OSEL="1") at inverted polarity time.
• (The OSEL bit is an output polarity specification bit of the PPG control register PCN.)
■ PPG Timer Register (PTMRn)
The PPG Timer Register (PTMRn) reads the counts of PPGn.
420
Figure 16.2-5 PPG Cycle Setting Register (PCSRn)
15
14
13
12
D15
D14
D13
D12
Access:
W
W
W
W
x
x
x
x
7
6
5
4
D7
D6
D5
D4
Access:
W
W
W
W
x
x
x
x
Figure 16.2-6 PPG Duty Setting Register (PDUTn)
15
14
13
12
D15
D14
D13
D12
Access:
W
W
W
W
x
x
x
x
7
6
5
4
D7
D6
D5
D4
Access:
W
W
W
W
x
x
x
x
MB96300 Super Series Hardware Manual
11
10
9
8
D11
D10
D9
D8
W
W
W
W
x
x
x
x
3
2
1
0
D3
D2
D1
D0
W
W
W
W
x
x
x
x
11
10
9
8
D11
D10
D9
D8
W
W
W
W
x
x
x
x
3
2
1
0
D3
D2
D1
D0
W
W
W
W
x
x
x
x
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