參數(shù)資料
型號(hào): XRT8001IDTR-F
廠商: Exar Corporation
文件頁(yè)數(shù): 1/48頁(yè)
文件大?。?/td> 0K
描述: IC WAN CLOCK E1/E1 DUAL 18SOIC
產(chǎn)品變化通告: Packaging Change 15/Jul/2010
標(biāo)準(zhǔn)包裝: 1,000
類(lèi)型: 時(shí)鐘/頻率發(fā)生器
PLL:
主要目的: 以太網(wǎng)(WAN),T1/E1
輸入: 時(shí)鐘
輸出: 時(shí)鐘
電路數(shù): 1
比率 - 輸入:輸出: 1:2
差分 - 輸入:輸出: 無(wú)/無(wú)
頻率 - 最大: 16.384kHz
電源電壓: 3.3 V ~ 5 V
工作溫度: -40°C ~ 85°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 18-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 18-SOIC
包裝: 帶卷 (TR)
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-ProgrammedwithPopularFrequency
Conversions for Communications Systems
Part Number
Package
Operating Temperature Range
XRT8001IP
18-Lead 300 Mil PDIP
-40
°C to +85°C
XRT8001ID
18-Lead 300 Mil JEDEC SOIC
-40
°C to +85°C
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
C/P Serial I/O
FIN
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)
NoExternalComponentsNeeded
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
ISDNRouters
Terminals
Remote Access Servers
T1/E1Concentrators
T1/E1 Multiplexers
T1/E1 Clock Rate Converters
Internal Timing Generators
System Synchronizers
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參數(shù)描述
XRT8001IP 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:WAN Clock for T1 and E1 Systems
XRT8001IP-F 功能描述:鎖相環(huán) - PLL RoHS:否 制造商:Silicon Labs 類(lèi)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
XRT8010 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:312MHZ CLOCK & CRYSTAL MULTIPLIER WITH LVDS OUTPUTS
XRT8010ES 功能描述:鎖相環(huán) - PLL RoHS:否 制造商:Silicon Labs 類(lèi)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
XRT8010IL 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:312MHZ CLOCK & CRYSTAL MULTIPLIER WITH LVDS OUTPUTS