參數(shù)資料
型號(hào): CXD2548R
廠商: Sony Corporation
元件分類(lèi): 數(shù)字信號(hào)處理
英文描述: CD Digital Signal Processor with Built-in Digital Servo and DAC
中文描述: CD數(shù)字信號(hào)處理器,具有內(nèi)置數(shù)字伺服和DAC
文件頁(yè)數(shù): 54/113頁(yè)
文件大?。?/td> 1286K
代理商: CXD2548R
– 54 –
CXD2548R
Timing Chart 2-18
Measurement interval (approximately 3.8μs)
Reference window
(132.2kHz)
Measurement pulse
(VCK1/2)
Measurement counter
VF0 to 7
Load
m
The relative velocity of the disc can be obtained with the following equation.
R = m + 1
32
VF0 to 7 is the result obtained by counting VCKI/2 pulses while the reference signal (132.2kHz) generated
from the crystal (384Fs) is high. This count is 31 when the disc is rotating at normal speed and 63 when it is
rotating at double speed (when DSPB is low).
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