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LC78681KE-L View Datasheet(PDF) - SANYO -> Panasonic

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Description
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LC78681KE-L Datasheet PDF : 24 Pages
First Prev 21 22 23 24
LC78681KE, 78681KE-L
21. 4.2M and 16M pins; Pin 59: 4.2M, pin 58: 16M
The 16.9344 MHz external crystal oscillator 16.9344 MHz buffer output signal is output from the 16M pin. That
frequency divided by four (a 4.2336 MHz frequency) is output from the 4.2M pin. When the oscillator is turned off
both these pins will be fixed at either high or low. These frequencies are not changed by issuing the double speed
command.
22. Reset circuit; Pin 55: RES
When power is first applied, this pin should be briefly set low and then set high. This will set the muting to dB
and stop the disk motor.
Constant linear velocity servo
START
STOP
BRAKE
CLV
Muting control
0 dB
12 dB
Subcode Q address conditions
Address 1
Address free
Laser control
ON (low)
OFF
(high)
CONT
High
Low
OSC
ON
OFF
Track jump mode
Former
New
Track count mode
Former
New
Setting the RES pin low sets the LC78681KE to the settings enclosed in boxes in the table.
23. Adjustment process sound output function; Pin 27: DEMO
By setting this pin high, muting can be set to 0 dB, the disk motor can be set to CLV, and a focus start operation can
be performed, even without issuing any commands from the control microprocessor. Also, since the LASER pin
becomes active, if the mechanism and servo systems are complete, an EFM signal can be acquired with only this
equipment, and an audio signal can be produced without the presence of a microprocessor.
No. 4969-21/24
 

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