參數(shù)資料
型號: HD49235FS
廠商: Hitachi,Ltd.
元件分類: 數(shù)字信號處理
英文描述: Digital Signal Processor for CD
中文描述: 數(shù)字信號處理器的CD
文件頁數(shù): 14/41頁
文件大?。?/td> 192K
代理商: HD49235FS
HD49235FS
Rev.2, Aug. 1995, page 14 of 41
When changing the playback speed, always switch the system to CLV stop mode so that the free-
running frequency is adjusted automatically. The period of setting is 30 msec or more.
Within five second after turning on power, switch the sytem to CLV stop mode two times or more
in an interval from one to two second so that the free-running frequency is adjusted automatically.
The period of setting is 30 msec or more.
64
PDOUT1
LPF1
62
AMPP
61
+
AMPM
LPF2
60
59
AC
1/8, 1/4, 1/2
frequency
division
VCO
34.5744 MHz
55
PLLCK
3.3 k
3.3 k
Counter A
EFM signal
Digital 0
×
1 speed,
×
2 speed,
×
4 speed Playback
speed select signal
4.3218 / 8.6436 / 17.2872 MHz
10 k
10 k
57
PDOUT2
1/98 or 1/96
frequency
division
Phase
detector 2
44.1 / 88.2 / 176.4 kHz
SW B
SW A
Disc stop
signal
44.1 / 88.2 / 176.4 kHz
derived from
crystal oscillator clock
4.2336 / 8.4672 / 16.9344 MHz
derived from
crystal oscillator clock
Disc stop
signal
Phase
detector 1
Automatic
adjustment
loop of the
free-running
frequency
AMPO
Note:
Figure 2
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