參數(shù)資料
型號: XRT75L00DIV
廠商: Exar Corporation
文件頁數(shù): 28/92頁
文件大?。?/td> 0K
描述: IC LIU E3/DS3/STS-1 SGL 52TQFP
標(biāo)準(zhǔn)包裝: 96
類型: 線路接口裝置(LIU)
驅(qū)動器/接收器數(shù): 1/1
規(guī)程: DS3,E3,STS-1,SONET
電源電壓: 3.135 V ~ 3.465 V
安裝類型: 表面貼裝
封裝/外殼: 52-LQFP
供應(yīng)商設(shè)備封裝: 52-TQFP(10x10)
包裝: 托盤
XRT75L00D
E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
REV. 1.0.2
29
5.2
Clock and Data Recovery:
The Clock and Data Recovery Circuit extracts the embedded clock, from the sliced digital data stream and
provides the retimed data to the B3ZS (HDB3) decoder.
The Clock Recovery PLL can be in one of the following two modes:
TRAINING MODE:
In the absence of input signals at RTIP and RRing pins, or when the frequency difference between the
recovered line clock signal and the reference clock applied on the ExClk input pin exceed 0.5%, the clock
recovery unit enters into Training Mode and a Loss of Lock condition is declared by toggling RLOL output pin
“High” (in Hardware Mode) or setting the RLOL bit to “1” in the control registers (in Host Mode). Also, the clock
output on the RxClk pin is the same as the reference clock applied on ExClk pin.
DATA/CLOCK RECOVERY MODE:
In the presence of input line signals on the RTIP and RRing input pins and when the frequency difference
between the recovered clock signal and the reference clock signal is less than 0.5%, the clock that is output on
the RxClk out pin is the Recovered Clock signal.
5.3
B3ZS/HDB3 Decoder:
FIGURE 18. INTERFERENCE MARGIN TEST SET UP FOR E3.
TABLE 9: INTERFERENCE MARGIN TEST RESULTS
MODE
CABLE LENGTH (ATTENUATION)INTERFERENCE TOLERANCE
E3
0 dB
-14 dB
12 dB
-18 dB
DS3
0 feet
-17 dB
225 feet
-16 dB
450 feet
-16 dB
STS-1
0 feet
-16 dB
225 feet
-15 dB
450 feet
-15 dB
NOISE
GENERATOR
Pattern
Generator
Μ
ATTENUATOR 1
S
N
Cable Simulator
DUT
XRT75L00D
Test Equipm ent
ATTENUATOR 2
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XRT75L00DIV-F 功能描述:外圍驅(qū)動器與原件 - PCI 1-Ch DS3, E3, SONET 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
XRT75L00DIVTR 功能描述:時鐘合成器/抖動清除器 3.3V 1 CH E3/DS3/STS W/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
XRT75L00DIVTR-F 功能描述:時鐘合成器/抖動清除器 3.3V 1 CH E3/DS3/STS W/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
XRT75L00ES 功能描述:時鐘合成器/抖動清除器 1CH 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
XRT75L00IV 功能描述:外圍驅(qū)動器與原件 - PCI 3.3V 1 CH E3/DS3/STS W/JITTER ATTEN 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