參數(shù)資料
型號(hào)： CXD3003R
廠商： Sony Corporation
元件分類： 數(shù)字信號(hào)處理
英文描述： CD Digital Signal Processor with Built-in Digital Servo and DAC
中文描述： CD數(shù)字信號(hào)處理器，具有內(nèi)置數(shù)字伺服和DAC
文件頁數(shù)： 101/137頁
文件大小： 1361K
代理商： CXD3003R
– 101 –
CXD3003R
§5-7. FCS Servo and FCS Search (Focus Search)
The FCS servo is controlled by the 8-bit serial command $0X. (See Table 5-6.)
Register name
Command
D23 to D20
D19 to D16
1 0
1 1
0
0
0
1
0
1 0
0
1 1
FOCUS SERVO ON (FOCUS GAIN NORMAL)
FOCUS SERVO ON (FOCUS GAIN DOWN)
FOCUS SERVO OFF, 0V OUT
FOCUS SERVO OFF, FOCUS SEARCH VOLTAGE OUT
FOCUS SEARCH VOLTAGE DOWN
FOCUS SEARCH VOLTAGE UP
0 0 0 0
FOCUS
CONTROL
0
Table 5-6.
FCS Search
FCS search is required in the course of turning on the FCS servo.
Fig. 5-7 shows the signals for sending commands $00
→
$02
→
$03 and performing only FCS search operation.
Fig. 5-8 shows the signals for sending $08 (FCS on) after that.
FCSDRV
RF
FOK
FE
FZC
FZC comparator level
$00 $02
$03
0
0
FCSDRV
RF
FOK
FE
FZC
$00 $02
$03
0
$08
Fig. 5-7.
Fig. 5-8.
: Don’t care
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