參數(shù)資料
型號： XRT8001
廠商： Exar Corporation
英文描述： WAN Clock for T1 and E1 Systems
中文描述： 廣域網(wǎng)時鐘T1和E1系統(tǒng)
文件頁數(shù)： 1/48頁
文件大?。?/td> 1054K
代理商： XRT8001
EXAR
Corporation, 48720 Kato Road, Fremont, CA 94538
(510) 668-7000
FAX (510) 668-7017
www.exar.com
Rev. 1.01
XRT8001
WAN Clock for T1 and E1 Systems
October 2001-1
GENERAL DESCRIPTION
The XRT8001 WAN Clock is a dual-phase-locked loop
chip that generates two very low jitter output clock
signals that can be used for synchronization clocks in
wide area networking systems. The XRT8001 has pre-
programmed multipliers and dividers that are selected
via the serial port. It generates two integer multiples of
8kHz, 56kHz, and 64kHz while locked onto an incom-
ing reference of 1.54MHz (T1), 2.048MHz (E1), 8kHz,
56kHz, or 64kHz
The XRT8001 WAN Clock can be configured to oper-
ate in one of six modes:
1.
The Forward/Master Mode
2.
The Reverse/Master Mode
3.
The “Fractional T1/E1" Reverse/Master Mode
4.
The “E1 to T1 - Forward/Master" Mode
5.
The “High Speed - Reverse" Mode
6.
The “Slave” Mode
FEATURES
Dual Phased Locked Loops with
Pre-Programmed Multipliers and Dividers
Pre-Programmed with Popular Frequency
Conversions for Communications Systems
Part Number
XRT8001IP
XRT8001ID
Package
Operating Temperature Range
-40
°
C to +85
°
C
-40
°
C to +85
°
C
18-Lead 300 Mil PDIP
18-Lead 300 Mil JEDEC SOIC
ORDERING INFORMATION
Reference Clock
8kHz to 16.384 MHz
Sync Out
8kHz or 64kHz
Master/Slave
Clock Output 1
Clock Output 2
PLL Lock Detect
m
C
/
m
P Serial I/O
F
IN
SYNC
MSB
CLK1
CLK2
LOCKDET
XRT8001
3
2
8
6
13
11
SCLK
SDI
SDO
CS
3.3V or 5V
CC
V
Figure 1. System Diagram
Generates Output Clock Frequencies Ranging
From 8kHz up to 16.384MHz
Serial Port Control for Optimal Performance
Sync Output: 8kHz or 64kHz
Low Jitter
Cascadable (Master / Slave Modes)
No External Components Needed
Pin Compatible with the XRT8000
Low Power (3.3V or 5V): 40 - 100mW
- 40°C to +85°C Temperature Range
18-Lead PDIP or SOIC Packages
APPLICATIONS
T1/E1 Access Equipment (DSU/CSU)
Frame Relay Access Devices (FRAD)
Basic Rate and Primary Rate ISDN Equipment
ISDN Routers
Terminals
Remote Access Servers
T1/E1 Concentrators
T1/E1 Multiplexers
T1/E1 Clock Rate Converters
Internal Timing Generators
System Synchronizers
相關(guān)PDF資料
PDF描述
XRT8001ID WAN Clock for T1 and E1 Systems
XRT8001IP WAN Clock for T1 and E1 Systems
XRT8010 312MHZ CLOCK & CRYSTAL MULTIPLIER WITH LVDS OUTPUTS
XRT8010IL 312MHZ CLOCK & CRYSTAL MULTIPLIER WITH LVDS OUTPUTS
XRT8020 650 MHZ CLOCK & CRYSTAL MULTIPLIER WITH LVDS OUTPUTS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XRT8001ES 功能描述:鎖相環(huán) - PLL WAN CLOCK RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數(shù)量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray
XRT8001ID 制造商:Exar Corporation 功能描述:WAN Clock 18-Pin SOIC W
XRT8001ID-F 功能描述:鎖相環(huán) - PLL 3.3V-5V temp -45 to 85C RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數(shù)量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray
XRT8001ID-F 制造商:Exar Corporation 功能描述:WAN Clock IC
XRT8001IDTR-F 功能描述:鎖相環(huán) - PLL RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數(shù)量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray
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