- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄1977 > XRT75L03DIV-F (Exar Corporation)IC LIU E3/DS3/STS-1 3CH 128LQFP PDF資料下載
參數(shù)資料
| 型號： | XRT75L03DIV-F |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 37/134頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC LIU E3/DS3/STS-1 3CH 128LQFP |
| 標準包裝： | 72 |
| 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 裸露焊盤 |
| 供應商設備封裝： | 128-LQFP（14x20） |
| 包裝： | 托盤 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁當前第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁第134頁
á
XRT75L03D
THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
REV. 1.0.0
126
9.8.3
How does the XRT75L03D permit the user to comply with the SONET APS Recovery Time
requirements of 50ms (per Telcordia GR-253-CORE)?
Telcordia GR-253-CORE, Section 5.3.3.3 mandates that the "APS Completion" (or Recovery) time be 50ms or
less. Many of our customers interpret this particular requirement as follows.
"From the instant that an APS is initiated on a high-speed SONET signal, all lower-speed SONET traffic (which
is being transported via this "high-speed" SONET signal) must be fully restored within 50ms. Similarly, if the
"high-speed" SONET signal is transporting some PDH signals (such as DS1 or DS3, etc.), then those entities
that are responsible for acquiring and maintaining DS1 or DS3 frame synchronization (with these DS1 or DS3
data-streams that have been de-mapped from SONET) must have re-acquired DS1 or DS3 frame
synchronization within 50ms" after APS has been initiated."
The XRT75L03D was designed such that the DS3 signals that it receives from a SONET Mapper device and
processes will comply with the Category I Intrinsic Jitter requirements per Telcordia GR-253-CORE.
Reference 1 documents some APS Recovery Time testing, which was performed to verify that the Jitter
Attenuator blocks (within the XRT75L03D) device that permit it to comply with the Category I Intrinsic Jitter
Requirements (for DS3 Applications) per Telcordia GR-253-CORE, do not cause it to fail to comply with the
"APS Completion Time" requirements per Section 5.3.3.3 of Telcordia GR-253-CORE.
However, Table 3
presents a summary of some APS Recovery Time requirements that were documented within this test report.
Table 3,
NOTE: The APS Completion (or Recovery) time requirement is 50ms.
Configuring the XRT75L03D to be able to comply with the SONET APS Recovery Time Requirements of
50ms
Quite simply, the user can configure a given Jitter Attenuator block (associated with a given channel) to (1)
comply with the "APS Completion Time" requirements per Telcordia GR-253-CORE, and (2) also comply with
the "Category I Intrinsic Jitter Requirements per Telcordia GR-253-CORE (for DS3 applications) by making
sure that Bit 4 (SONET APS Recovery Time Disable Ch_n), within the Jitter Attenuator Control Register is set
to "0" as depicted below.
TABLE 33: MEASURED APS RECOVERY TIME AS A FUNCTION OF DS3 PPM OFFSET
DS3 PPM OFFSET (PER W&G ANT-20SE)
MEASURED APS RECOVERY TIME (PER LOGIC ANALYZER)
-99 ppm
1.25ms
-40ppm
1.54ms
-30 ppm
1.34ms
-20 ppm
1.49ms
-10 ppm
1.30ms
0 ppm
1.89ms
+10 ppm
1.21ms
+20 ppm
1.64ms
+30 ppm
1.32ms
+40 ppm
1.25ms
+99 ppm
1.35ms
相關PDF資料 |
PDF描述 |
|---|---|
| XRT75L03IV-F | IC LIU E3/DS3/STS-1 3CH 128LQFP |
| XRT75L04DIV-F | IC LIU E3/DS3/STS-1 4CH 176TQFP |
| XRT75L04IV-F | IC LIU E3/DS3/STS-1 4CH 176LQFP |
| XRT75L06DIB-F | IC LIU E3/DS3/STS-1 6CH 217BGA |
| XRT75L06IB-F | IC LIU E3/DS3/STS-1 6CH 217BGA |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| XRT75L03DIVTR | 功能描述:時鐘合成器/抖動清除器 3CHNNEL E3/DS3/STS 1 SONET DE-SYNCH 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 |
| XRT75L03DIVTR-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 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59 |
| XRT75L03ES | 功能描述:時鐘合成器/抖動清除器 3 CH T3/E3/STS1 LIU+JA 3.3V 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 |
| XRT75L03IV | 功能描述:外圍驅(qū)動器與原件 - PCI 3CH E3/DS3/STS1 JITTER ATTENUATOR RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| XRT75L03IV-F | 功能描述:外圍驅(qū)動器與原件 - PCI 3-Ch DS3, E3, STS-1 RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
發(fā)布緊急采購，3分鐘左右您將得到回復。