LC78622NE
3. VCO Monitor; Pin 21: PCK
PCK is a monitor pin that outputs an average frequency of 4.3218 MHz, which is divided from the VCO frequency.
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 54: RWC, pin 56: COIN, pin 57: CQCK
Commands can be executed by setting RWC high and inputting commands to the COIN pin in synchronization with
the CQCKclock. Note that commands are executed on the falling edge of RWC.
Focus start
Track jump
Muting control
Disk motor control
Miscellaneous control
Track check
Digital attenuator
General-purpose I/O, E/D
• One-byte commands
One-byte commands
Two-byte command (RWC set twice)
Two-byte commands (RWC set once)
• Two-byte commands (RWC set twice: For track checking)
No. 6015-9/31
SANYO [ SANYO SEMICON DEVICE ]
