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CHAPTER 12 MULTI-FUNCTION TIMER
MB90560 series
12.3.5 Registers of Waveform Generator
12.3.5.3 Waveform Control Register (SIGCR)
Waveform control register is used to control how the PPG0~5 output to RTO0~5,
operating clock frequencies, noise cancelling function enable, DTTI input enable and
DTTI input polarity.
I
Waveform control register (SICGCR)
Figure 12.3.5.3-1 Waveform Control Register (SIGCR)
Address
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Initial value
000056
H
DTIE
DTIL
NRSL
DCK2
DCK1
DCK0
PGS1
PGS0
00000000
B
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
PGS1 PGS0
Operation
mode
PPG0~5 output thru RTO0~5 table
RTO0 RTO1
RTO2
RTO3
RTO4 RTO5
0
0
8bit x 6 ch
PPG0 PPG1 PPG2
PPG3 PPG4 PPG5
0
1
8-bit x 3 ch PPG1 PPG1 PPG3
PPG3 PPG5 PPG5
1
0
8-bit x 2 ch PPG1 PPG3 PPG1
PPG3 PPG1 PPG3
1
1
8-bit x 1 ch PPG1 PPG1 PPG1
PPG1 PPG1 PPG1
DCK2 DCK1 DCK0
Operating clock selection bit
0
0
0
φ
(62.5 ns,
φ
=16MHz)
0
0
1
φ
/2 (125 ns,
φ
=16MHz)
0
1
0
φ
/4 (250 ns,
φ
=16MHz)
0
1
1
φ
/8 (500 ns,
φ
=16MHz)
1
0
0
φ
/16 (1
μ
s,
φ
=16MHz)
1
0
1
φ
/32 (2
μ
s,
φ
=16MHz)
1
1
0
φ
/64 (4
μ
s,
φ
=16MHz)
1
1
1
Prohibited
φ
: Machine clock
NRSL
Noise cancelling function selection bit
0
DTTI input is not go thru the noise cancelling circuit.
1
DTTI input is not go thru the noise cancelling circuit.
DTIL
DTTI input polarity selection bit
0
“0” input
1
“1” input
DTIE
DTTI input enable bit
0
Disable DTTI input
1
Enable DTTI input
R/W : Read and Write
: Initial value