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參數資料
| 型號： | XRT5794ES |
| 廠商： | Exar Corporation |
| 英文描述： | Evaluation System |
| 中文描述： | 評價體系 |
| 文件頁數： | 1/11頁 |
| 文件大小： | 715K |
| 代理商： | XRT5794ES |
XRT5794ES
Evaluation
System
Rev. 2.00
5
GENERAL DESCRIPTION
The XR-T5794 demo board is a 4.75” x 9.75”
double-sided circuit card that provides the support
circuitry necessary for a comprhensive evaluation of the
XR-T5794 CMOS Quad E1 Line Interface IC. three
board-mountedDIPswitchesallowcompletetestingofall
loopback,monitor,andtransmitterpower-downfeatures.
Thedemoboardisnormallysuppliedconfiguredfor120
balanced E1 operation. However,
contianed in this manual enables the user to modify the
hardware for E1 unbalanced 75
cable service, or T1
balanced 100
use.
the information
BOARD OPERATION
Figures1, 2 andTable 2are the board componentlayout,
circuit diagram, and parts list respectively. The Demo
Board uses the same pin function and signal names as
theXR-T5794datasheet.Thisuser’smanualisdesigned
to be used in conjuction with the XR-T5794 data sheet.
The following description if for a demo board set up for
balanced120
E1use.Italsoappliestotheothermodes
ofoperationiftheappropriateimpedence,cabletype,and
signal source changes are made.
Power Requirements
Power connections are made to banana jacks located in
the upper left hand corner of the board. Power supply
requirements are:
V
DD
= +5.0 V
±
5% at 850 mA maximum
V
SS
= - 5.0 V
±
5% at 850 mA minimum
Line-Side Signals
Receiver signal inputs are labeled RXIN1 through RXIN4
for the four channels. The connectors supplied for
balanced 120
operation are one quarter inch, 3-circuit
audiotypejacks.Equipmentconnectionsshouldbemade
with shielded twisted pair patch cords. The signalapplied
toanyinputsmustbeaCCITTG.703compliantpulsethat
maybeattenuatedbyatwisted-paircable.TheXR-T5794
exceedsG.703maximumcablelossofrequirementof6.0
dB at 1.024 MHz.
Similarly, transmitter outputs are labeleds TXOUT1
through TXOUT4 for the four channels. The monitor
channel output is labeled MONOUT. Connector types
and connection methods are identical to those specified
above for the recieve side. The transmitter output, when
terminated by a 120
resistor, is a pulse meeting the
G.703 template requirements. During demo board
evaluation,allransmitters,includingthemonitorchannel,
that are not powered down should be connected to either
a properly terminated cable, a piece of test equipment
contianing a termination, or a 120
load resistor.
Equipment-Side Signal Connections
For
equipment-sidesignalsisprovidedbytwogroupsofturret
terminals and also by two ribbon cable connectors. The
terminals are convient for simple tests while the ribbon
cable connectors reduce the amount of wiring necessary
toconnecttheentireequipmentsideofthedemoboardto
customer equipment.
Header P1 and a group of terminals that provide channel
1 and 2 I/O are located below the XR-T5794. For
channels 3 and 4, P2 and a second group of pins are
located above the XR-T5794. P1 and P2 are dual-row 26
pinheaderswithonlytheodd-nimberedpinsusedtocarry
signals. Even-numbered pins are grounded to minimize
ribboncablecrosstalk. Pin 13 is alsogroundedto provide
isolation between the transmit and receive directions.
convenience,
access
to
the
logic-level
相關PDF資料 |
PDF描述 |
|---|---|
| XRT5894ES | () |
| XRT5894 | Four-Channel E1 Line Interface (3.3V or 5.0V)(四通道E1 3.3V線接口單元) |
| XRT5897ES | () |
| XRT5897 | Seven-Channel E1 Line Interface (3.3V or 5.0V)(七通道E1 3.3V線接口單元) |
| XRT5997 | Seven-Channel E1 Line Interface Unit(7通道 E1線接口單元) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| XRT5794ES-PLCC | 功能描述:外圍驅動器與原件 - PCI 4 CH E1 AFE 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 |
| XRT5794ES-TQFP | 功能描述:外圍驅動器與原件 - PCI 4 CH E1 AFE 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 |
| XR-T5794IJ | 制造商:EXAR 制造商全稱:EXAR 功能描述:Quad E-1 Line Interface Unit |
| XRT5794IJ-F | 功能描述:外圍驅動器與原件 - PCI RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| XR-T5794IV | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CEPT/T1 Interface |
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