Hitachi H8S/2199 Hardware Manual page 1014

H'D07A: Drum 12-Bit PWM Control Registor DPWCR: Drum 12-Bit PWM
Bit : 7
DPOL
Initial value : 0
W
R/W :
Output data select bit
0
1
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 DRMPWM pin.
However, it is possible to output 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.
Fixed output bit, PWM pin output bit
DDC DHiZ
1 0
1
0 *
Note: * Don't care.
Polarity switchover bit
0 Positive polarity output
1 Negative polarity output
Rev. 1.0, 02/00, page 1012 of 1141
6 5
DDC DHiZ
1 0
W W
Modulate error data from digital filter circuit
Modulate data written in data register
DH/L
0 Low level output from PWM pin
1 High level output form PWM pin
* High impedance from PWM pin
* PWM modulated signal output
(Initial value)
4 3
DH/L DSF/DF
0 0
W W
Carrier frequency select bits
DCK2 DCK1 DCK0
0 0
1
1 0
1
Description
(Initial value)
2 1
DCK2 DCK1 DCK0
0 1
W W
Description
Carrier frequency is φ/2
0
Carrier frequency is φ/4
1
Carrier frequency is φ/8
0
Carrier frequency is φ/16
1
Carrier frequency is φ/32
0
Carrier frequency is φ/64
1
Carrier frequency is φ/128
0
1 (Do not set)
(Initial value)
0
0
W
(Initial value)