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LC78681E bảng dữ liệu(PDF) 10 Page - Sanyo Semicon Device |
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LC78681E bảng dữ liệu(HTML) 10 Page - Sanyo Semicon Device |
10 / 23 page 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 00000100 DISC MOTOR START (accelerate) 00000101 DISC MOTOR CLV (CLV) 00000110 DISC MOTOR BRAKE (decelerate) 00000111 DISC MOTOR STOP (stop) Mode CLV+ CLV– Accelerate High Low Decelerate Low High CLV ** Stop Low Low |
Số phần tương tự - LC78681E |
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Mô tả tương tự - LC78681E |
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