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參數(shù)資料
| 型號： | XRT75L02IVTR-F |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 21/50頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC LIU E3/DS3/STS-1 2CH 100TQFP |
| 標準包裝： | 1,000 |
| 類型： | 線路接口裝置（LIU） |
| 驅(qū)動器/接收器數(shù)： | 2/2 |
| 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： | 100-LQFP |
| 供應(yīng)商設(shè)備封裝： | 100-TQFP（14x14） |
| 包裝： | 帶卷 (TR) |
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xr
XRT75L02
REV. 1.0.3
TWO CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER
26
For E3 rate, since the output pulse template is measured at the secondary of the transformer and since there is
no Cross-Connect system pulse template requirements, the Transmit Build Out Circuit is always disabled.
4.3.1
Guidelines for using Transmit Build Out Circuit:
If the distance between the transmitter and the DSX3 or STSX-1, Cross-Connect system, is less than 225 feet,
enable the Transmit Build Out Circuit by setting the TxLEV_n input pin “Low” (in Hardware Mode) or setting the
TxLEV_n control bit to “0” (in Host Mode).
If the distance between the transmitter and the DSX3 or STSX-1 is greater than 225 feet, disable the Transmit
Build Out Circuit.
4.3.2
Interfacing to the line:
The differential line driver increases the transmit waveform to appropriate level and drives into the 75
load as
shown in Figure 6.
4.4
Transmit Drive Monitor:
This feature is used for monitoring the transmit line for occurrence of fault conditions such as a short circuit on
the line or a defective line driver.
To activate this function, connect MTIP_n pins to the TTIP_n lines via a 270
resistor and MRing_n pins to
TRING_n lines via 270
resistor as shown in Figure 16.
When the MTIP_n and MRING_n are connected to the TTIP_n and TRING_n lines, the drive monitor circuit
monitors the line for transitions. The DMO_n (Drive Monitor Output) will be asserted “Low” as long as the
transitions on the line are detected via MTIP_n and MRING_n.
If no transitions on the line are detected for 128 ± 32 TxClk_n periods, the DMO_n output toggles “High” and
when the transitions are detected again, DMO_n toggles “Low”.
NOTES:
1. The Drive Monitor Circuit is only for diagnostic purpose and does not have to be used to operate the transmitter.
2.
With TxMON pin “High”, MTIP and MRING will be internally connected to TTIP and TRING for self-monitoring.
FIGURE 16. TRANSMIT DRIVER MONITOR SET-UP.
3
k
+
1
%
TTIP(n)
TRING(n)
XRT75L02 (0nly one channel shown)
1:1
R3
75
TxPOS(n)
TxNEG(n)
TxLineClk(n)
TPOS(n)
TNEG(n)
TxCLK(n)
RxB
RxA
31.6
+ 1%
31.6
+1%
R1
R2
MRING(n)
MTIP(n)
R5 270
R4 270
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT75L03 | 制造商:EXAR 制造商全稱:EXAR 功能描述:THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR |
| XRT75L03D | 制造商:EXAR 制造商全稱:EXAR 功能描述:THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER |
| XRT75L03DES | 功能描述:時鐘合成器/抖動清除器 3 CH T3/E3/STS1 LIU+DESYNCH3.3V 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 |
| XRT75L03DIV | 功能描述:外圍驅(qū)動器與原件 - PCI 3CHNNEL E3/DS3/STS 1 SONET DE-SYNCH 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 |
| XRT75L03DIV-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(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
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