Rev. 1.0, 02/00, page 372 of 1141
19.2
Register Descriptions
19.2.1
12-Bit PWM Control Registers (CPWCR, DPWCR)
CPWCR
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 :
DPWCR
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
Bit :
Initial value :
R/W :
CPWCR is the PWM output control register for the capstan motor. DPWCR is the PWM output
control register for the drum motor. Both are 8-bit writable registers.
CPWCR and DPWCR are initialized to H'42 by a reset, or when in standby or module-stop mode.
Bit 7
Polarity Invert (POL): This bit can invert the polarity of the modulated PWM signal for
noise suppression and other purposes. This bit is invalid when fixed output is selected (when bit
DC is set to 1).
Bit 7
POL
Description
0
Output with positive polarity
(Initial value)
1
Output with inverted polarity
Bit 6
Output Select (DC): Selects either PWM modulated output, or fixed output controlled by
the pin output bits (bits 5 and 4).