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參數(shù)資料
| 型號(hào)： | XRT7295 |
| 廠商： | Exar Corporation |
| 英文描述： | () |
| 中文描述： | （） |
| 文件頁數(shù)： | 5/10頁 |
| 文件大?。?/td> | 563K |
| 代理商： | XRT7295 |
XRT7295/96ES
6
Rev. 1.00
POWER SUPPLY CONNECTORS
V
CC
, GND
Banana plug input connectors are provided to supply
power and ground to the receiver and transmitter.
RECEIVER I/O’S AND CONTROL PINS
Receiver Input
The bipolar input is a single ended analog input for the
XR--T7295 receiver IC.
Two input configurations are
possible, one input method is to use a transformer
coupledsystemthisrequireC1inplaceand C2removed,
theothermethodistoconnectthelinetothereceiverviaa
capacitorthereforeC2must amountedandC1removed.
The data rate at this input must correspond to the crystal
oscillatorprovided inthe locations X1 orX2. The jumpers
E1 and E2 are for the possibility to electrically isolate the
board from the system and have the demo board floating
towards the line.
EXCLK
Two crystal oscillators are provided on the board the
crystal in location X1 is selected by inserting a jumper
betweenpin1and2onP3,X2willbeselectedbyinserting
a jumper between pin 2 and 3 of P3.
ICT On/Off
The ICT input is a static digital input which sets all digital
outputs of the receiver and/or the transmitter in a high
impedance state.
REQB In/Out
Thisinputpin selectsthe receiveequalizerinorout ofthe
data path.
RECEIVER MONITOR OUTPUTS
The RLOS and the RLOL outputs are digital status
indicators for loss of signal and loss of lock, respectively.
LOSTHR
This pin controls the loss of signal threshold.
settings are provided (V
CC
, V
CC
/2, GND). Setting of this
pin works as follows:
Three
LOSTHR PIN VOLTAGE
V
CC
GND
V
CC
/2
ON
ON
V
CC
ON
OFF
GND
OFF
ON
FLOAT
OFF
OFF
Table 1.
TRANSMITTER I/O’s AND CONTROL PINS
RLOOP, LLOOP
When set for RLOOP (remote loopback), all signals
appearing on RPDATA and RNDATA are transmitted to
the line using RCLK.
LLOOP (Local Loopback) causes TPDATA and TNDATA
togothroughtheencoderandoutputatRPOSandRNEG
respectively.
T3, STS1 or E3 Operation
This input selects which encoder/decoder combination
should be used.
A high on this pin sets the B3ZS
encoder/encoder, a low selects HDB3 mode.
TAOS
A highon this pincauses a continuousAMI of all 1’s to be
transmitted on the line.
ENCODIS/DECODIS
These two pins enable or disable the B3ZS or HDB3
coders from their respective data path.
TXH1/TXL0
The output signal amplitude at TTIP and TRING can be
selected by taking this pin high or low. For cable lengths
greater than 225 feet TXLEV should be set high. For
cable lengths less than 225 feet, it should be set low.
RECEIVER OUTPUTS
RPOS, RNEG, RCLK AND RNRZ are the receiver
outputs after going through the receive side decoder of
the transmitter IC.
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| XRT7296 | INTEGRATED LINE TRANSMITTER |
| XRT7296IP | INTEGRATED LINE TRANSMITTER |
| XRT7296IW | INTEGRATED LINE TRANSMITTER |
| XRT7298 | DS3/STS-1, E3 INTEGRATED LINE TRANSMITTER |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XR-T7295 | 制造商:EXAR 制造商全稱:EXAR 功能描述:DS3/Sonet STS-1 Integrated Line Receiver |
| XR-T7295-1EIP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PCM Receiver |
| XR-T7295-1EIW | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PCM Receiver |
| XRT7295A/96ES -DS3 | 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI 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 |
| XRT7295A/96ES-DS3 | 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI 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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