參數(shù)資料
型號: MT9040
廠商: Zarlink Semiconductor Inc.
英文描述: T1/E1 Synchronizer
中文描述: 的T1/E1同步
文件頁數(shù): 13/27頁
文件大?。?/td> 424K
代理商: MT9040
MT9040
Data Sheet
13
Zarlink Semiconductor Inc.
Figure 8 - Time-constant Circuit
A digital alternative to the RC-time-constant circuit is presented in Figure 9. The circuit in Figure 9 can be used to
generate a steady lock signal. The circuit monitors the MT9040’s LOCK pin, as long as it detects a positive pulse
every 1.024 seconds or less, the Advanced Lock output will remain high. If no positive pulse is detected on the
LOCK output within 1.024 seconds, the Advanced LOCK output will go low.
Figure 9 - Digital Lock Pin Circuit
Lock
R=3.3M
MT9040
IN4148
LOCK
74HC14
74HC14
C=1
μ
f
+
MT9040
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