- 您現在的位置：買賣IC網 > PDF目錄358765 > LC78620E (Sanyo Electric Co.,Ltd.) Compact Disc Player DSP(CD播放器DSP) PDF資料下載
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： | 30/34頁 |
| 文件大小： | 477K |
| 代理商： | LC78620E |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁當前第30頁第31頁第32頁第33頁第34頁
C1 and C2 Error Correction
The LC78620E writes EFM demodulated data to internal RAM to compensate for jitter and then performs the
following processing with uniform timing based on the crystal oscillator clock. First, the LC78620E performs C1
error checking and correction in the C1 block, determines the C1 flags, and writes the C1 flag register. Next, the
LC78620E performs C2 error checking and correction in the C2 block, determines the C2 flags, and writes data to
internal RAM.
Note: 1. If the positions of the errors determined by the C2 check agree with those specified by the C1 flags, the correction is performed and the flags
are cleared. However, if the number of C1 flags is 7 or higher, C2 correction may fail. In this case correction is not performed and the C1 flags
are taken as the C2 flags without change. Error correction is not possible if one error position agrees and the other does not. Furthermore, if
the number of C1 flags is 5 or under, the C1 check result can be seen as unreliable. Accordingly, the flags will be set in this case. Cases
where the number of C1 flags is 6 or more are handled in the same way, and the C1 flags are taken as the C2 flags without change. When
there is not even one agreement between the error positions, error correction is, of course, impossible. Here, if the number of C1 flags was 2
or under, data that was seen as correct after C1 correction is now seen as incorrect data. The flags are set in this case. In other cases, the C1
flags are taken as the C2 flags without change.
2. When data is determined to have three or more errors and be uncorrectable, correction is, of course, impossible. Here, if the number of C1
flags was 2 or under, data that was seen as correct after C1 correction is now seen as incorrect data. The flags are set in this case. In other
cases the C1 flags are taken as the C2 flags without change.
No. 5130-30/34
LC78620E
C1 flag
Error correction and flag processing
No errors
No correction required · Flag reset
1 error
Correction · Flag reset
2 errors
Correction · Flag set
3 errors or more
Correction not possible · Flag set
C2 flag
Error correction and flag processing
No errors
No correction required · Flag reset
1 error
Correction · Flag reset
2 errors
Depends on C1 flags
*
1
3 errors or more
Depends on C1 flags
*
2
相關PDF資料 |
PDF描述 |
|---|---|
| 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復。