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CXD3003 Folha de dados(PDF) 101 Page - Sony Corporation

Nome de Peças CXD3003
Descrição Electrónicos  CD Digital Signal Processor with Built-in Digital Servo and DAC
PDF  137 Pages
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Fabricante Electrônico  SONY [Sony Corporation]
Página de início  http://www.sony.co.jp
Logo SONY - Sony Corporation

CXD3003 Folha de dados(HTML) 101 Page - Sony Corporation

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– 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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