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參數(shù)資料
| 型號： | LC78622NE |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Compact Disc Player DSP(用于CD播放器的8位DSP) |
| 中文描述： | 光碟機(jī)的DSP（用于光盤播放器的8位數(shù)字信號處理器） |
| 文件頁數(shù)： | 15/31頁 |
| 文件大小： | 338K |
| 代理商： | LC78622NE |
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No. 6015-15/31
LC78622NE
Track jump modes
The table lists the relationships between acceleration pulses (the a period) , deceleration pulses (the b period), and
the braking period (the c period).
Note: 1. As indicated in the table, actuator signals are not output during the 256 TRACK CHECK function. This is a mode in which the TES signal is counted
in the tracking loop off state. Therefore, feed motor forwarding is required.
2. The servo command register is automatically reset after one cycle of the track jump sequence (a, b, c) completes.
3. If another track jump command is issued during a track jump operation, the content of that new command will be executed starting immediately.
4. The 1 TRACK JUMP #3 mode does not have a braking period (the C period). Since brake mode must be generated by an external circuit, care is
required when using this mode.
5. While there was no braking period (the C period) in the LC78620E/21E for the new track jump command “2 TRACK JUMP IN (OUT)”, this has been
changed in this LSI, which has a C period of 60 ms.
The THLD signal is generated by the LA9230M, LA9231M, or LA9240M, and the tracking signal is held during the JP pulse period.
Standard track jump mode
New track jump mode
Command
a
b
c
a
b
c
1 TRACK JUMP IN (OUT) #1
233 μs
233 μs
60 ms
233 μs
233 μs
60 ms
1 TRACK JUMP IN (OUT) #2
0.5 track
jump period
233 μs
60 ms
0.5 track
jump period
The same
time as “a”
60 ms
1 TRACK JUMP IN (OUT) #3
0.5 track
jump period
233 μs
This period does
not exist.
0.5 track
jump period
The same
time as “a”
This period does
not exist.
0.5 track
jump period
60 ms; TOFF is
low during
the C period.
0.5 track
jump period
The same
time as “a”
60 ms; TOFF is
low during
the C period.
1 TRACK JUMP IN (OUT) #4
233 μs
2 TRACK JUMP IN (OUT)
None
None
None
1 track
jump period
The same
time as “a”
60 ms
4 TRACK JUMP IN (OUT)
2 track
jump period
466 μs
60 ms
2 track
jump period
The same
time as “a”
60 ms
16 TRACK JUMP IN (OUT)
9 track
jump period
7 track
jump period
60 ms
9 track
jump period
The same
time as “a”
60 ms
32 TRACK JUMP IN (OUT)
18 track
jump period
14 track
jump period
60 ms
18 track
jump period
14 track
jump period
60 ms
64 TRACK JUMP IN (OUT)
36 track
jump period
28 track
jump period
60 ms
36 track
jump period
28 track
jump period
60 ms
128 TRACK JUMP IN (OUT)
72 track
jump period
56 track
jump period
60 ms
72 track
jump period
56 track
jump period
60 ms
TOFF goes high during the period
when 256 tracks are passed over.
The a and b pulses are not output.
TOFF goes high during the period
when 256 tracks are passed over.
The a and b pulses are not output.
256 TRACK CHECK
60 ms
60 ms
TRACK JUMP BRAKE
There are no a or b periods.
60ms
There are no a and b periods.
60 ms
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| 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 |
| LC78625E | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Compact Disc Player DSP |
| LC78626 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:DSP for Compact Disk Players |
| LC78626E | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:DSP for Compact Disk Players |
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