參數(shù)資料
型號(hào)： KS9284
廠商： SAMSUNG SEMICONDUCTOR CO. LTD.
元件分類： 數(shù)字信號(hào)處理
英文描述： Digital Signal Processor(數(shù)字信號(hào)處理器)
中文描述： 數(shù)字信號(hào)處理器（數(shù)字信號(hào)處理器）
文件頁(yè)數(shù)： 22/25頁(yè)
文件大?。?/td> 112K
代理商： KS9284
KS9284
DIGITAL SIGNAL PROCESSOR
4) Hi-Speed-Mode
The rough servo mode, which moves 20,000 tracks in high speed acts between the inside of the CD and outside of it.
The mirror domain of track which havn’t pit is duplicated with 20KHz signal to EFM.
In this case, servo action is to unstable because the peak value of mirror singal which is longer than orginal frame sync
signal which is detected. In Hi-Speed mode, by using the 8.4672/256MHz signal against peak hold and XTFR/16 or
XTFR/32
signal against bottom hold, the mirror is removed, and Hi-Speed servo action be to stable.
5) Phase-Mode
The phase-mode is the mode to control the EFM phase. Phase difference between PBFR/4 and XTFR/4 is detected
when NCLV of CNTL-Z is ‘L’ and the difference is outputted to SMDP terminal.
If a cycle of VCO/2 signal is put as ‘T’ and it is put as ‘/WP’ during a ‘H’ period of PBFR, it outputs ‘H’ to SMSD terminal
from the falling edge of PBFR to the (/WP-278T) X 32, and then, outputs ‘L’ to the falling edge of the next.
6) XPHSP-Mode
The XPHSP mode is the mode used in normal operation. It samples a LKFS signal made inthe frame sync block at a
cycle of PBFR/16.
If the sampling is ‘H’, the phase mode is performed, and if the ‘L’ is sampled continuously 8 times, the speed mode is
performed automatically.
The selection of peak hold period of speed mode, and bottom hold period and gain of speed / Hispeed mode is deter-
mined by the CNTL-W register.
7) VPHSP-Mode
The VPHSP-mode is the mode used for rough servo control. It uses VCO instead of X-tal in the EFM pattern test. When
the range of VCO center changes, VCO is easily locked because the rotation of a spindle motor changes in the same
direction.
SMDP
SMSD
SMEF
SMON
-
Hi-Z
L
H
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
KS9286 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:DIGITAL SIGNAL PROCESSOR for CDP
KS9286B 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:DIGITAL SIGNAL PROCESSOR for CDP
KS9286B-L 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:DIGITAL SIGNAL PROCESSOR for CDP
KS9287 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:DIGITAL SIGNAL PROCESSOR
KS94-1000E 制造商:Austerlitz Electronic 功能描述:
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