Rev. 1.0, 02/00, page 998 of 1141
H'D058: Capstan Speed Error Detection Control Register
CFVCR: Capstan Speed Error Detector
0
0
1
0
(R)/W
*2
2
0
R/W
3
0
4
0
R/W
0
R/(W)
*1
5
6
0
7
CFRFON CF-R/UNR CPCNT
CFRCS1
CFRCS0
0
R/W
CFCS1
(R)/W
*2
R
R/W
CFCS0
CFOVF
Notes:
Capstan phase system filter computation auto start bit
0 Filter computation by capstan lock detection is not excuted. (Initial value)
1 Filter computation of phase system is executed at the time of
drum lock detection.
Bit :
Initial value :
R/W :
Capstan lock counter setting bit
CFRCS1 CFRCS0 Description
0 0 Underflow by 1 lock detection (Initial value)
1 Underflow by 2 lock detections
1 0 Underflow by 3 lock detections
1 Underflow by 4 lock detections
Clock source select bit
CFCS1 CFCS0
0 0
φ
s (Initial value)
1
φ
s/2
1 0
φ
s/4
1
φ
s/8
Counter overflow flag
0 Normal status (Initial value)
1 Counter overflows.
Error data limit function select bit
0 Limit function OFF (Initial value)
1 Limit function ON
Capstan lock flag
0 Capstan speed system is not locked. (Initial value)
1 Capstan speed system is locked.
Description
1. Only 0 can be written.
2. When read, counter value is read.