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參數(shù)資料
| 型號： | S5L9284D |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 元件分類： | 數(shù)字信號處理 |
| 英文描述： | DIGITAL SIGNAL PROCESSOR |
| 中文描述： | 數(shù)字信號處理器 |
| 文件頁數(shù)： | 14/24頁 |
| 文件大?。?/td> | 350K |
| 代理商： | S5L9284D |
S5L9284D
DIGITAL SIGNAL PROCESSOR
14
EFM DEMODULATION BLOCK
This block consists of an EFM demodulator which demodulates EFM data obtained from a disc, an EFM
phasedetector and a controller, etc.
EFM PHASE DETECTOR
As the EFM signal input from a disc includes the components of 2.1609 MHz, the EFM phase detector uses the bit
clock (/PBCK) of 4.3218 MHz, to detect the phase of this signal.
This PBCK detects the phase at the edge of the EFM signal and the result is output to the APDO1 or APDO2
terminals.
A. At Normal Operating
In case of (1) : When the EFM signal is slower than VCO
In case of (2) : When the EFM signal is locked with VCO
In case of (3) : When the EFM signal is faster than VCO
Figure 6. Timing Chart of the EFM Phase Detector
B. At Abnormal Operating
If the HIPD of CNTL-Z is “H” and “L” of the LKFS is shorter than 3.5T (a period PBFR is T), the Hi-Z is output to the
APDO terminal as many as “L” , and if it is over 3.5T, the Hi-Z is output as many as 3.5T.
EFM DEMODULATOR
The 14-bit data is channeled through the circuit, and is de modulated to 8-bit data.
Demodulated data has two kinds of signals, One is subcode data and the other is audio data. They are respectively
input into the subcode block written in the internal 16K SRAM to perform error correction.
Hi-Z
Hi-Z
Hi-Z
Hi-Z
VCOI:
PBCK:
EFMI:
EFMD:
APDO:
1
2
3
相關(guān)PDF資料 |
PDF描述 |
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| S5L9286F02 | DIGITAL SIGNAL PROCESSOR |
| S5L9286F02-T0R0 | DIGITAL SIGNAL PROCESSOR |
| S5L9286F01-Q0R0 | IC, TRANS, PHY, DUAL, 10/100BASE-TX |
| S5L9286 | DIGITAL SIGNAL PROCESSOR FOR CDP |
| S5L986F02 | DIGITAL SIGNAL PROCESSOR FOR DISCMAN |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| S5L9284D01-Q0R0 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:DIGITAL SIGNAL PROCESSOR |
| S5L9286 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:DIGITAL SIGNAL PROCESSOR FOR CDP |
| S5L9286F01-Q0R0 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:DIGITAL SIGNAL PROCESSOR FOR CDP |
| S5L9286F02 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:DIGITAL SIGNAL PROCESSOR |
| S5L9286F02-T0R0 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:DIGITAL SIGNAL PROCESSOR FOR DISCMAN |
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