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KB9223-L Datasheet(PDF) 27 Page - Samsung semiconductor |
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KB9223-L Datasheet(HTML) 27 Page - Samsung semiconductor |
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27 / 34 page  PRELIMINARY RF AMP & SERVO SIGNAL PROCESSOR 27 KB9223 / KB9223-L M/M-97-P006 1997. 10. 17 3.2.1 Focus Control($0X) This command consists of 8 bits data and expressed by two hexa $0X. FS4,FS3,FS2,FS1:internal switch for focus control -Focus Search Operation(FS2,FS1) $02:FS2 switch become off and the value of servo output pin is as below. (10uA-5uA)*50k*(feedback Resistor/50k) $03:If FS1 switch is 1, the current supply is cut off and the discharge is performed. The waveform is as below and the time constant is determined by internal resistor 50K and external capacitor. Figure 20. Waveform at pin 3 when FS1 is switched from 0 to 1 The waveform of servo output pin according to FS1 and FS2 switches is as below. Figure 21. Focus search waveform at pin 48 by $02 and $03 FS4 is switch for on/off control of focus servo loop $00:Focus servo off $08:Focus servo on D7 D6 D5 D4 D3 D2 D1 D0 ISTAT 0 0 0 0 FS4 FS3 FS2 FS1 FZC 0V $00 02 03 02 03 02 03 00 |
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Similar Description - KB9223-L |
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