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): 29/41頁
文件大?。?/td> 192K
代理商: HD49235FS
HD49235FS
Rev.2, Aug. 1995, page 29 of 41
SLOCK:
This output pin indicates whether sync signals were detected correctly during disc playback.
This signal goes high when correct sync signals are detected in two consecutive frames, and goes low
when sync signals are missing consecutively for the number of times specified by the SYLCK0 and
SYLCK1 microprocessor command bits.
Sync pattern
PWL
PWH
Figure 16 Sync Pattern at Start of Frame
×
×
×
×
×
Valid ASYNC missing
Valid ASYNC
Valid ASYNC
Goes high when valid
ASYNC is detected
twice consecutively
SLOCK
Goes low when valid ASYNC is missing
consecutively a number of times
selected by microprocessor command
bits SYLCK0 and SYLCK1
*
Note:
*
This figure is for the case when two consecutive missing ASYNCs is specified.
Figure 17 Valid ASYNC and SLOCK Relationships
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