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參數資料
| 型號： | LC78620E |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Compact Disc Player DSP(CD播放器DSP) |
| 中文描述： | 光碟機的DSP（數字信號處理器的CD播放器） |
| 文件頁數： | 18/34頁 |
| 文件大?。?/td> | 477K |
| 代理商： | LC78620E |
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JP three-value output
The JP three-value output command allows the track jump operation to be controlled from a single pin.
Track check mode
The LC78620E will count the specified number of tracks minus one when the microprocessor sends an arbitrary
binary value in the range 8 to 254 after issuing either a track check in or a track check out command.
Note: 1. When the desired track count has been input in binary, the track check operation is started by the fall of RWC.
2. During a track check operation the TOFF pin goes high and the tracking loop is turned off. Therefore, feed motor forwarding is required.
3. When a track check in/out command is issued the function of the WRQ signal switches from the normal mode subcode Q standby monitor function
to the track check monitor function. This signal goes high when the track check is half completed, and goes low when the check finishes. The
control microprocessor should monitor this signal for a low level to determine when the track check completes.
4. If a two-byte reset command is not issued, the track check operation will repeat. That is, to skip over 20,000 tracks, issue a track check 201
command once, and then count the WRQ signal 100 times. This will check 20,000 tracks.
5. After performing a track check operation, use the brake command to have the pickup lock onto the track.
No. 5130-18/34
LC78620E
MSB
LSB
Command
RES = low
1 0 1 1 0 1 1 0
JP THREE VALUE OUTPUT
1 0 1 1 0 1 1 1
JP TWO VALUE OUTPUT (earlier scheme)
G
G
MSB
LSB
Command
RES = low
1 1 1 1 0 0 0 0
TRACK CHECK IN
1 1 1 1 1 0 0 0
TRACK CHECK OUT
1 1 1 1 1 1 1 1
TWO BYTE COMMAND RESET
G
G
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|---|---|
| LC78621E | Compact Disc Player DSP(用于CD播放器的8位DSP) |
| LC78622E | Compact Disc Player DSP(用于CD播放器的8位DSP) |
| LC78622NE | Compact Disc Player DSP(用于CD播放器的8位DSP) |
| LC78624E | Compact Disc Player DSP(用于CD播放器的8位DSP) |
| LC78625E | SigmaDSP 28-/56-Bit Audio Processor with Two ADCs and Four DACs |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LC78621E | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Compact Disc Player DSP |
| LC78622E | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Compact Disc Player DSP |
| LC78622NE | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Compact Disc Player DSP |
| LC78624E | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Compact Disc Player DSP |
| LC78625 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Compact Disc Player DSP |
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