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LC78622NE 参数 Datasheet PDF下载

LC78622NE图片预览
型号: LC78622NE
PDF下载: 下载PDF文件 查看货源
内容描述: 光盘播放器的DSP [Compact Disc Player DSP]
分类和应用:
文件页数/大小: 31 页 / 325 K
品牌: SANYO [ SANYO SEMICON DEVICE ]
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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  
One-byte commands  
Disk motor control  
Miscellaneous control  
Track check  
Two-byte command (RWC set twice)  
Two-byte commands (RWC set once)  
Digital attenuator  
General-purpose I/O, E/D  
• One-byte commands  
• Two-byte commands (RWC set twice: For track checking)  
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