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參數(shù)資料
| 型號(hào)： | XRT75L00DIV |
| 廠商： | EXAR CORP |
| 元件分類： | 數(shù)字傳輸電路 |
| 英文描述： | E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER |
| 中文描述： | DATACOM, PCM TRANSCEIVER, PQFP52 |
| 封裝： | 10 X 10 MM, TQFP-52 |
| 文件頁數(shù)： | 32/92頁 |
| 文件大?。?/td> | 894K |
| 代理商： | XRT75L00DIV |
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XRT75L00D
E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
REV. 1.0.2
27
When the MTIP and MRing are connected to the TTIP and TRing lines, the drive monitor circuit monitors the
line for transitions. The DMO (Drive Monitor Output) will be asserted “Low” as long as the transitions on the line
are detected via MTIP and MRing.
If no transitions on the line are detected for 128 ± 32 TxClk periods, the DMO output toggles “High” and when
the transitions are detected again, DMO toggles “Low”.
N
OTE
:
The Drive Monitor Circuit is only for diagnostic purposes and does not have to be used to operate the transmitter.
4.5
Transmitter Section On/Off:
The transmitter section can be turned on or off. To turn on the transmitter in the Hardware mode, pull TxON pin
“High”. In the Host mode, write a “1” to the TxON control bit AND pull the TxON pin “High” to turn on the
transmitter.
When the transmitter is turned off, the TTIP and TRing are tri-stated.
N
OTES
:
1.
2.
This feature provides support for Redundancy.
If the XRT75L00D is configured in Host mode, to permit a system designed for redundancy to quickly shut-off the
defective line card and turn on the back-up line card, writing a “1” to the TxON control bit transfers the control to
TxON pin.
5.0
This section describes the detailed operation of the various blocks in the receiver. The receiver recovers the
TTL/CMOS level data from the incoming bipolar B3ZS or HDB3 encoded input pulses.
5.1
AGC/Equalizer:
The Adaptive Gain Control circuit amplifies the incoming analog signal and compensates for the various flat
losses and also for the loss at one-half symbol rate. The AGC has a dynamic range of 30 dB.
The Equalizer restores the integrity of the signal and compensates for the frequency dependent attenuation of
up to 900 feet of coaxial cable (1300 feet for E3). The Equalizer also boosts the high frequency content of the
signal to reduce the Inter-Symbol Interference (ISI) so that, the slicer slices the signal at 50% of peak voltage
to generate Positive and Negative data.
THE RECEIVER SECTION:
F
IGURE
16. T
RANSMIT
D
RIVER
M
ONITOR
SET
-
UP
.
3
T T IP
T R in g
X R T 7 5 L 0 0 D
1 :1
R 3
7 5
T x P O S
T x N E G
T x L in e C lk
T P D a ta
T N D a ta
T x C lk
R e xt
R e fA G N D
3 7 .4
+ 1 %
3 7 .4
+ 1 %
R
R
M R in g
M T IP
R 5 2 7 0
R 4 2 7 0
3
T x P O S
T x N E G
T x L in e C lk
T P D a ta
T N D a ta
T x C lk
R e x t
R e fA G N D
M R in g
M T IP
T T IP
T R in g
R 3
7 5
3 7 .4
+ 1 %
3 7 .4
+ 1 %
R
R
1 :1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XRT75L02 | TWO CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER |
| XRT75L02IV | TWO CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER |
| XRT75L03D | THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER |
| XRT75L04D | FOUR CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER |
| XRT75L04DIV | FOUR CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT75L00DIV-F | 功能描述:外圍驅(qū)動(dòng)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(shí)鐘合成器/抖動(dòng)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(shí)鐘合成器/抖動(dòng)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(shí)鐘合成器/抖動(dòng)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(dòng)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 |
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