參數(shù)資料
型號(hào): LC72122V
廠商: SANYO SEMICONDUCTOR CO LTD
元件分類(lèi): PLL合成/DDS/VCOs
英文描述: PLL FREQUENCY SYNTHESIZER, 40 MHz, PDSO20
封裝: SSOP-20
文件頁(yè)數(shù): 10/22頁(yè)
文件大?。?/td> 346K
代理商: LC72122V
No. 6113-18/22
LC72122V
2. Unlock Detection Software
Figure 3
3. When Outputting Unlock Data Using Serial Data Output:
Once the LC72122V detects an unlocked state, it does not reset the unlock data (UL) until the next data output (or
data input) operation is performed. At the data output x point in Figure 3, although the VCO frequency is stable
(locked), the unlock data remains set to the unlocked state since no data output has been performed since the value of
N was changed. Thus, even though the frequency became stable (locked), from the point of view of the data, the
circuit is in the unlocked state. Therefore, the data output x immediately following a change to the value of N should
be seen as a dummy data, and the data from the second data output (data output y) and later outputs should be seen
as valid data.
Lock Determination Flowchart
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