參數(shù)資料
型號: GS4910B
廠商: Gennum Corporation
英文描述: HD/SD/Graphics Clock and Timing Generator with GENLOCK
中文描述: 高清/標清/圖形時鐘和定時發(fā)生器鎖相
文件頁數(shù): 41/113頁
文件大?。?/td> 1017K
代理商: GS4910B
GS4911B/GS4910B Data Sheet
36655 - 2
April 2006
41 of 113
Figure 3-2
summarizes the differences in output accuracy in each mode of
operation. Assuming a crystal reference of +/-100ppm, in Free Run mode the
frequency of the output clock and timing signals will be as accurate as the crystal.
In Genlock mode the frequency will be as accurate as the input reference
regardless of the crystal accuracy. In Freeze mode, the frequency of the output
clock and timing signals will be maintained to within +/- 2ppm.
Figure 3-2: Output Accuracy and Modes of Operation
Free Run
Genlock
Freeze
74.25 MHz
-2ppm
No Input
Reference
Reference
Applied
Reference
Lost
Time
Assumption: Reference
XTAL is 27MHz+/-100ppm
-100ppm
+100ppm
+2ppm
+
NOTES:
1. t represents the temperature variability of the crystal
2. Diagram not to scale.
t
t
- t
+ t
- t
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