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参数资料
| 型号： | LC78681E |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封装： | QFP-64 |
| 文件页数： | 2/23页 |
| 文件大小： | 241K |
| 代理商： | LC78681E |
Note: If for Focus Start 2, the value in parentheses is in effect only when FST is low (unlike Focus Start 1).
Notes: 1. The falling edge of FZD is not accepted when FST is low.
2. After a Focus Start command has been issued, the focus servocontroller is reinitialized when RWC goes high.
For this reason, a new command should not be issued until the S-curve for the focus coil drive has been
completed.
3. If focus cannot be reached (i.e., the FZD signal does not go low), the FOCS signal remains high and the lens
remains raised. In this case, the Nothing command should be issued to reinitialize the servocontroller.
4. When the RES pin is set low, LASER is directly set high.
5. Focus start using the DEMO pin is in mode 1.
Constant Linear Velocity Servocontroller (pin 10: CLV +, pin 11: CLV – and pin 12: V/P)
The disc motor accelerates when CLV+ is high and decelerates when CLV– is high. These outputs are selected by the
motor mode commands issued by the microprocessor (accelerate, decelerate, CLV, or stop). The CLV+ and CLV–
outputs for each mode are shown in the following table.
No. 4521-10/23
LC78681E
MSB
LSB
Command
RES = low
0 0 0 0 0 1 0 0
DISC MOTOR START (accelerate)
0 0 0 0 0 1 0 1
DISC MOTOR CLV (CLV)
0 0 0 0 0 1 1 0
DISC MOTOR BRAKE (decelerate)
0 0 0 0 0 1 1 1
DISC MOTOR STOP (stop)
Mode
CLV+
CLV–
Accelerate
High
Low
Decelerate
Low
High
CLV
*
Stop
Low
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| LC78681KE | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Digital Signal Processor for Compact Disc Players |
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