參數(shù)資料
型號(hào)： XRT73L04
廠商： Exar Corporation
英文描述： 4 Channel E3/DS3/STS-1 Line Interface Unit(4通道 E3/DS3/STS-1線接口單元)
中文描述： 4頻道E3/DS3/STS-1線路接口單元（4通道E3/DS3/STS-1線接口單元）
文件頁(yè)數(shù)： 46/62頁(yè)
文件大?。?/td> 781K
代理商： XRT73L04
XRT73L04
4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
REV. P1.0.5
á
PRELIMINARY
42
.
The manner that a given channel transmits Dual-Rail
data to the Receiving Terminal Equipment is de-
scribed below and illustrated in Figure 27. Each
channel(n) typically updates the data on the RPOS(n)
and RNEG(n) output pins on the rising edge of Rx-
Clk(n).
RxClk(n) is the Recovered Clock signal from the in-
coming Received line signal. As a result, these clock
signals are typically 34.368 MHz for E3 applications,
44.736 MHz for DS3 applications and 51.84 MHz for
SONET STS-1 applications.
In general, if a given channel received a positive-po-
larity pulse in the incoming line signal via the RTIP(n)
and RRing(n) input pins, then the channel pulses its
corresponding RPOS(n) output pin “High". Converse-
ly, if the channel received a negative-polarity pulse in
the incoming line signal via the RTIP(n) and RRing(n)
input pins, then the channel(n) pulses its correspond-
ing RNEG(n) output pin “High".
Inverting the RxClk(n) outputs
Each channel can invert the RxClk(n) signals with re-
spect to the delivery of the RPOS(n) and RNEG(n)
output data to the Receiving Terminal Equipment.
This feature may be useful for those customers
whose Receiving Terminal Equipment logic design is
such that the RPOS(n) and RNEG(n) data must be
sampled on the rising edge of RxClk(n). Figure 28 il-
lustrates the behavior of the RPOS(n), RNEG(n) and
RxClk(n) signals when the RxClk(n) signal has been
inverted.
In the Hardware Mode:
Setting the RxClkINV pin “High” results in all chan-
nels of the XRT73L04 to output the recovered data on
RPOS(n) and RNEG(n) on the falling edge of Rx-
Clk(n). Setting this pin “Low” results in the recovered
data on RPOS(n) and RNEG(n) to output on the ris-
ing edge of RxClk(n).
F
IGURE
26. T
HE
TYPICAL
INTERFACE
FOR
THE
T
RANSMISSION
OF
D
ATA
IN
A
D
UAL
-R
AIL
F
ORMAT
,
FROM
THE
R
ECEIVE
S
ECTION
OF
THE
XRT73L04
TO
THE
R
ECEIVING
T
ERMINAL
E
QUIPMENT
Terminal
Equipment
(E3/DS3 or STS-1
Framer)
Exar E3/DS3/STS-1 LIU
Receive
Logic
Block
RxPOS
RxNEG
RxClk
RPOS
RNEG
RxClk
F
IGURE
27. H
OW
THE
XRT73L04
OUTPUTS
DATA
ON
THE
RPOS
AND
RNEG
OUTPUT
PINS
RxClk
RPOS
RNEG
相關(guān)PDF資料
PDF描述
XRT73L06 SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XRT73L04A 制造商:EXAR 制造商全稱:EXAR 功能描述:4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
XRT73L04AIV 制造商:EXAR 制造商全稱:EXAR 功能描述:4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
XRT73L04B 制造商:EXAR 制造商全稱:EXAR 功能描述:4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
XRT73L04BES 功能描述:網(wǎng)絡(luò)控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
XRT73L04BIV 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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