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LC78681KE View Datasheet(PDF) - SANYO -> Panasonic

Part Name
Description
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LC78681KE Datasheet PDF : 24 Pages
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LC78681KE, 78681KE-L
3. 1/2 VCO; Pin 18: 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 19: FSEQ
Pin 19 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 a
synchronization detection monitor. (It is held high for a single frame.)
5. Servo command function; Pin 51: RWC, pin 53: COIN, pin 54: CQCK, pin 62: CS
Commands are input to the LC78681KE by setting RWC high and sending commands to the COIN pin in
synchronization with the CQCK clock.
Focus start
Track jump
Mute control
Disc motor control
Other control commands
1-byte commands
Track count
2-byte command
1-byte commands
2-byte commands
Command execution starts on the falling edge of the RWC signal.
Command noise exclusion
MSB
LSB
11101111
11101110
Command
COMMAND INPUT NOISE EXCLUSION MODE
RESET NOISE EXCLUSION MODE
This command allows the noise on the CQCK clock signal to be excluded.
RES = low
No. 4969-8/24
 

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