參數(shù)資料
型號： PT7A4401CJ
廠商： Electronic Theatre Controls, Inc.
英文描述： PT7A4401C T1/E1 System Synchronizer
中文描述： PT7A4401C的T1/E1系統(tǒng)同步
文件頁數(shù)： 1/27頁
文件大?。?/td> 154K
代理商： PT7A4401CJ
Data Sheet
PT7A4401C T1/E1 System Synchronizer
PT0108(09/02)
Ver:0
1
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Features
Meets jitter requirements for AT&T TR62411
Stratum 4 and Stratum 4 Enhanced for DS1
interfaces, and for ETSI ETS300 011 for E1 inter-
faces
Provides C1.5, C3, C2, C4, C8 and C16 output
clock signals
Provides 3 kinds of 8kHz framing signals
Selectable 1.544MHz, 2.084MHz or 8kHz input
reference signals
Operates in either Normal or Free-Run states
Enhanced in jitter and duty cycle comparing with
PT7A4401B
Package: 28-pin PLCC (PT7A4401CJ)
Applications
Synchronization and timing control for multitrunk
T1 and E1 systems
ST-BUS clock and frame pulse sources
Introduction
PT7A4401C is functionally enhanced version of
PT7A4401B. It has better jitter performance and C16
whose output duty cycle is independent of 20MHz
master clock.
The PT7A4401C employs a digital phase-locked loop
(DPLL) to provide timing and synchronizing signals
for multitrunk T1 and E1 primary rate transmission
links. It generates the ST-BUS clock and framing sig-
nals that are phase-locked to input reference signals
of either 2.048MHz, 1.544MHz or 8kHz.
The PT7A4401C is compliant with AT&T TR62411
Stratum 4 and Stratum 4 Enhanced, and ETSI ETS
300 011. It meets the requirements for jitter tolerance,
jitter transfer, intrinsic jitter, frequency accuracy, cap-
ture range and phase slope, etc.
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