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參數(shù)資料
| 型號： | SAA7371 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Digital servo processor and Compact Disc decoder CD7 |
| 中文描述： | 數(shù)字伺服處理器和CD7抗原光盤解碼器 |
| 文件頁數(shù)： | 10/60頁 |
| 文件大?。?/td> | 247K |
| 代理商： | SAA7371 |
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1998 Jul 06
10
Philips Semiconductors
Product specification
Digital servo processor and
Compact Disc decoder (CD7)
SAA7371
Fig.5 Data slicer showing typical application components (for n = 4).
22 pF
100
nF
HFIN
HFREF
Iref
ISLICE
22 k
22 k
100 nF
1 nF
1 nF
HF
inputs
crystal
clock
D
Q
DPLL
1/2VDD
VSSA
VSS
VSSA
MBG397
VDD
100
μ
A
100
μ
A
7.4
Demodulator
7.4.1
F
RAME SYNC PROTECTION
A double timing system is used to protect the demodulator
from erroneous sync patterns in the serial data.
The master counter is only reset if:
A sync coincidence detected; sync pattern occurs
588
±
1 EFM clocks after the previous sync pattern
A new sync pattern is detected within
±
6 EFM clocks of
its expected position.
The sync coincidence signal is also used to generate the
PLL lock signal, which is active HIGH after 1 sync
coincidence found, and reset LOW if during 61
consecutive frames no sync coincidence is found.
The PLL lock signal can be accessed via the SDA or
STATUS pins selected by register 2 and 7.
Also incorporated in the demodulator is a Run Length 2
(RL2) correction circuit. Every symbol detected as RL2 will
be pushed back to RL3. To do this, the phase error of both
edges of the RL2 symbol are compared and the correction
is executed at the side with the highest error probability.
7.4.2
EFM
DEMODULATION
The 14-bit EFM data and subcode words are decoded into
8-bit symbols.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAA7371GP | Digital servo processor and Compact Disc decoder CD7 |
| SAA7372 | Digital servo processor and Compact Disc decoder CD7 |
| SAA7373 | Digital servo processor and Compact Disc decoder CD7 |
| SAA7373GP | Digital servo processor and Compact Disc decoder CD7 |
| SAA7374 | Low voltage digital servo processor and Compact Disc decoder CD7LV |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAA7371GP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital servo processor and Compact Disc decoder CD7 |
| SAA7372 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital servo processor and Compact Disc decoder CD7 |
| SAA7373 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital servo processor and Compact Disc decoder CD7 |
| SAA7373GP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital servo processor and Compact Disc decoder CD7 |
| SAA7374 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low voltage digital servo processor and Compact Disc decoder CD7LV |
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