Rev. 2.0, 11/00, page 939 of 1037
H'D07A: Drum 12-Bit PWM Control Registor DPWCR: Drum 12-Bit PWM
0
0
1
1
W
2
0
W
3
0
4
0
W
0
W
5
6
1
7
DH/L
DSF/DF
DCK2
DCK1
DCK0
0
W
DPOL
W
W
W
DDC
DHiZ
Positive polarity
Negative polarity output
0
1
Polarity switchover bit
Fixed output bit, PWM pin output bit
0
1
0
Low level output from PWM pin
HiZ
H/L
DC
Fixed output bit, PWM pin output bit
1
High level output form PWM pin
1
0
*
High impedance from PWM pin
*
*
PWM modulated signal output
Note:
*
Don't care.
Modulate error data from digital filter circuit
Modulate data written in data register
0
1
Output data select bit
Note: When PWMs output data from the digital filter circuit, the data consisting of the speed and phase
filtering results are modulated by PWMs and output from the CAPPWM and DRMPWM pins.
However, it is possible to output only drum phase filter results from CAPPWM pin and only capstan
phase filter result from DRMPWM pin, by DFUCR settings of the digital filter circuit.
See the section explaining the digital filter computation circuit.
Carrier frequency select bits
Carrier frequency select bits
0
0
0
φ
/2
CK1
CK0
CK2
1
φ
/4
1
0
φ
/8
1
φ
/16
0
1
0
φ
/32
1
φ
/64
1
0
φ
/128
1
(Do not set)
Bit :
Initial value :
R/W :
H'D07B: Capstan 12-Bit PWM Control Register CPWCR: Capstan 12-Bit PWM
0
0
1
1
W
2
0
W
3
0
4
0
W
0
W
5
6
1
7
CH/L
CSF/DF
CCK2
CCK1
CCK0
0
W
CPOL
W
W
W
CDC
CHiZ
Bit :
Initial value :
R/W :
Содержание Hitachi H8S/2191
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