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LC78625 Arkusz danych(PDF) 11 Page - Sanyo Semicon Device

Numer części LC78625
Szczegółowy opis  Compact Disc Player DSP
Download  35 Pages
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Producent  SANYO [Sanyo Semicon Device]
Strona internetowa  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LC78625 Arkusz danych(HTML) 11 Page - Sanyo Semicon Device

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No. 5502-11/35
LC78625E
3. VCO monitor; Pin 21: PCK
PCK is a monitor pin that outputs an average frequency of 4.3218 MHz, which is the VCO frequency divided by two.
4. Synchronization detection monitor; Pin 22: FSEQ
Pin 22 goes high when the frame synchronization (a positive polarity synchronization signal) from the EFM signal
read in by PCK and the timing generated by the counter (the interpolation synchronization signal) agree. This pin is
thus a synchronization detection monitor. (It is held high for a single frame.)
5. Servo command function; Pin 64: RWC, pin 66: COIN, pin 67: CQCK
Commands can be executed by setting RWC high and inputting commands to the COIN pin in synchronization with
the CQCK clock. Note that commands are executed on the falling edge of RWC.
Focus start
Track jump
Muting control
One byte commands
Disc motor control
Miscellaneous control
Track check
Two-byte command (RWC set twice)
Digital attenuator
Two-byte commands (RWC set once)
General-purpose port I/O data setup
• One-byte commands
• Two-byte commands (RWC set twice)
• Two-byte commands (RWC set once)


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