參數(shù)資料
型號(hào)： XRT7300IV
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
中文描述： DATACOM, PCM TRANSCEIVER, PQFP44
封裝： 10 X 10 MM, 1.40 MM HEIGHT, TQFP-44
文件頁(yè)數(shù)： 38/55頁(yè)
文件大小： 608K
代理商： XRT7300IV
XRT7300
E3/DS3/STS-1 LINE INTERFACE UNIT
REV. 1.1.1
á
34
Whenever the XRT7300 delivers Dual-Rail format to
the Terminal Equipment it does so via the following
output signals.
RPOS
RNEG
RCLK1
RCLK2
Figure 23 illustrates the typical interface for the trans-
mission of data in a Dual-Rail Format from the Re-
ceive Section of the XRT7300 to the Receiving Termi-
nal Equipment.
The manner that the LIU transmits Dual-Rail data to
the Receiving Terminal Equipment is described below
and illustrated in Figure 24. The XRT7300 typically
updates the data on the RPOS and RNEG output
pins on the rising edge RCLK1 (or RCLK2).
RCLK1 (or RCLK2) is the Recovered Clock signal
from the incoming 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 the XRT7300 received a positive-polarity
pulse in the incoming line signal via the RTIP and
RRING input pins, then the XRT7300 pulses the
RPOS output pin “High”. If the XRT7300 received a
negative-polarity pulse in the incoming line signal via
the RTIP and RRING input pins, then the XRT7300
pulses the RNEG output pin “High”.
Inverting the RCLK1 or RCLK2 outputs
When using the XRT7300, either of the RCLK1 or
RCLK2 signals can be inverted with respect to the de-
livery of the RPOS and RNEG output signals to the
Receiving Terminal Equipment. This feature may be
useful for those customers whose Receiving Terminal
Equipment logic design is such that the RPOS and
RNEG data must be sampled on the rising edge of
RCLK1 or RCLK2. Figure 25 illustrates the behavior
F
IGURE
23. T
HE
T
YPICAL
I
NTERFACE
FOR
THE
T
RANSMISSION
OF
D
ATA
IN
A
D
UAL
-R
AIL
F
ORMAT
F
ROM
THE
R
ECEIVE
S
ECTION
OF
THE
XRT7300
TO
THE
R
ECEIVING
T
ERMINAL
E
QUIPMENT
Exar E3/DS3/STS-1 LIU
Receive
Logic
Block
RxPOS
RxNEG
RCLK1, 2
RPOS
RNEG
RCLK1, 2
Terminal
Equipment
(E3/DS3 or STS-1
Framer)
F
IGURE
24. H
OW
THE
XRT7300 O
UTPUTS
D
ATA
ON
THE
RPOS
AND
RNEG O
UTPUT
P
INS
RCLK1
RPOS
RNEG
相關(guān)PDF資料
PDF描述
XRT7300 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
XRT7300IV-F 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
XRT7300IVTR 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
XRT7300IVTR-F 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
XRT7302IV 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PCM Transceiver
XRT73L00 制造商:EXAR 制造商全稱:EXAR 功能描述:E3/DS3/STS-1 LINE INTERFACE UNIT
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