參數(shù)資料
型號： XRT75R03DIVTR
廠商： Exar Corporation
文件頁數(shù)： 29/135頁
文件大?。?/td> 0K
描述： IC LIU E3/DS3/STS-1 3CH 128LQFP
標(biāo)準(zhǔn)包裝： 750
類型： 線路接口裝置（LIU）
驅(qū)動器/接收器數(shù)： 3/3
規(guī)程： DS3，E3，STS-1
電源電壓： 3.135 V ~ 3.465 V
安裝類型： 表面貼裝
封裝/外殼： 128-LQFP
供應(yīng)商設(shè)備封裝： 128-LQFP（14x20）
包裝： 帶卷 (TR)
XRT75R03D
120
THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCRONIZER
REV. 1.0.4
10.7.2
Wander Measurement Test Results
Wander Measurement test results will be provided in the next revision of the XRT75R03D Data Sheet.
10.8
Designing with the XRT75R03D
In this section, we will discuss the following topics.
How to design with and configure the XRT75R03D to permit a system to meet the above-mentioned Intrinsic
Jitter and Wander requirements.
How is the XRT75R03D able to meet the above-mentioned requirements?
How does the XRT75R03D permits the user to comply with the SONET APS Recovery Time requirements of
50ms (per Telcordia GR-253-CORE)?
How should one configure the XRT75R03D, if one needs to support "Daisy-Chain" Testing at the end
Customer's site?
10.8.1
How to design and configure the XRT75R03D to permit a system to meet the above-
mentioned Intrinsic Jitter and Wander requirements
As mentioned earlier, in most application (in which the XRT75R03D will be used in a SONET De-Sync
Application) the user will typically interface the XRT75R03D to a Mapper device in the manner as presented
below in Figure 58.
In this application, the Mapper has the responsibility of receiving a SONET STS-N/OC-N signal and extracting
as many as N DS3 signals from this signal. As a given channel within the Mapper IC extracts out a given DS3
signal (from SONET) it will typically be applying a Clock and Data signal to the "Transmit Input" of the LIU IC.
Figure 58 presents a simple illustration as to how one channel, within the XRT75R03D should be connected to
the Mapper IC.
As mentioned above, the Mapper IC will typically output a Clock and Data signal to the XRT75R03D. In many
cases, the Mapper IC will output the contents of an entire STS-1 data-stream via the Data Signal to the
XRT75R03D.
However, the Mapper IC typically only supplies a clock pulse via the Clock Signal to the
XRT75R03D coincident to whenever a DS3 bit is being output via the Data Signal. In this case, the Mapper IC
would not supply a clock edge coincident to when a TOH, POH or any non-DS3 data-bit is being output via the
Data-Signal.
FIGURE 58. ILLUSTRATION OF THE XRT75R03D BEING CONNECTED TO A MAPPER IC FOR SONET DE-SYNC
APPLICATIONS
DS3 to STS-N
Mapper/
Demapper
IC
DS3 to STS-N
Mapper/
Demapper
IC
XRT75R03D
STS-N Signal
TPDATA_n input pin
TCLK_n input
De-Mapped (Gapped)
DS3 Data and Clock
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XRT75R03DIVTR-F 功能描述:接口 - 專用 RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59
XRT75R03ES 功能描述:時鐘合成器/抖動清除器 3CH T3/E3/STS1LIU+JA 3.3V W/REDUNDANCY RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel
XRT75R03IV 功能描述:外圍驅(qū)動器與原件 - PCI 3CHNNEL E3/DS3/STS 1 JITTER ATTENUATOR RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray
XRT75R03IV-F 功能描述:外圍驅(qū)動器與原件 - PCI 3-Ch E3/DS3/STS-1 RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray
XRT75R03IVTR 功能描述:時鐘合成器/抖動清除器 3CHNNEL E3/DS3/STS 1 JITTER ATTENUATOR RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel
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