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參數(shù)資料
| 型號： | KS9284 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 元件分類： | 數(shù)字信號處理 |
| 英文描述： | Digital Signal Processor(數(shù)字信號處理器) |
| 中文描述： | 數(shù)字信號處理器（數(shù)字信號處理器） |
| 文件頁數(shù)： | 17/25頁 |
| 文件大?。?/td> | 112K |
| 代理商： | KS9284 |
KS9284
DIGITAL SIGNAL PROCESSOR
(Comment) : If the SQOK of the subcode Q data is “H” the subcode data is outputted to SQDT according to SQCK signal.
If the SQOK is “L”, it is outputted to SQDT with “L”.
4)VCOI, SBDT, SBCK timing chart.
Fig 12. Timing chart of subcode data output)
x
: After PBFR becomes negative edge, SBCK becomes “L” during about 10
μ
sec.
y
: If S0S1 is “L”, subcode P is outputted. And if “H”, S0S1 is outputted.
z
: If a period of VCOI is “T”, the width of
z
is 4T.
{
: If the pulse inputted to the SBCK terminal be over seven, subcode data (P, Q, R, S, T, U, V, W) is repeated.
4. ECC (Error Comrrection Code) block
The function of ECC block is to recover damaged data to some extent when data on a disc is damaged.
By using CIRC (Cross Interleaved Reed-Solomon Code), 2-Error correction is performed for C1 (32, 28) and 4-Erasure
correction is performed for C2 (28, 24).
ECC is performed by the unit of one symbol of eight bit. In correcting C1, a C1 pointer is generated, and in correcting C2,
C2 pointer is generated.
C1, C2 pointers send error information to the data which ECC is given.
After correcting C2, against uncorrectable data, error data is sent to display by outputting a C2 FLAG.
This information data is inputted to interpolator block in order to handle error data.
The monitoring flow for error correction is available through FLAG1 ~ FLAG5 tesrminal.
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