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)： 45/62頁(yè)
文件大?。?/td> 781K
代理商： XRT73L04
á
XRT73L04
4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
PRELIMINARY
REV. P1.0.5
41
itored by reading in the contents of Command Regis-
ter CR0.
COMMAND REGISTER CR0-(N)
If the DLOS(n) bit-field contains a “1”, then the corre-
sponding channel(n) is currently declaring a DLOS
condition. Conversely, if the DLOS(n) bit-field con-
tains a “0”, then the channel(n) is currently declaring
the DLOS condition.
Disabling the DLOS Detector
For debugging purposes, it is useful to disable the
DLOS(n) detector. If the XRT73L04 is operating in
the HOST Mode, the DLOS Detector can be disabled
by writing a “1” into the DLOSDIS(n) bit-field in Com-
mand Register CR2.
N
OTE
:
Setting both the ALOSDIS(n) and DLOSDIS(n) bit-
fields to "1" disables LOS Declaration by Channel(n).
3.5.3
Muting the Recovered Data while the LOS
is being Declared
In some applications it is not desirable for a channel
within the E3/DS3/STS-1 LIU to recover data and
route it to the Receiving Terminal while the channel is
declaring an LOS condition. Consequently, the
XRT73L04 includes an LOS Muting feature. This fea-
ture, if enabled, causes a given channel to halt trans-
mission of the recovered data to the Receiving Termi-
nal while the LOS condition is "true". In this case, the
RPOS(n) and RNEG(n) output pins are forced to "0".
Once the LOS condition has been cleared, then the
channel(n) resumes normal transmission of the re-
covered data to the Receiving Terminal.
This feature is available whenever XRT73L04 is oper-
ating in the HOST Mode or Hardware Mode.
a. Operating in the Hardware Mode.
The MUTing upon LOS feature is enabled by pulling
the LOSMUTEN output pin “High". This enables the
MUTing upon LOS feature globally for all channels.
b. Operating in the HOST Mode.
The MUTing upon LOS feature for each Channel can
be enabled by writing a "1" into the LOSMUT(n) bit-
field within Command Register 3.
N
OTE
:
This step only enables the MUTing upon LOS fea-
ture within Channel(n).
3.6
R
OUTING
THE
R
ECOVERED
T
IMING
AND
D
ATA
I
NFORMATION
TO
THE
R
ECEIVING
T
ERMINAL
E
QUIPMENT
Each channel ultimately takes the Recovered Timing
and Data information, converts it into CMOS levels
and routes it to the Receiving Terminal Equipment via
the RPOS(n), RNEG(n) and RxClk(n) output pins.
Each channel can deliver the recovered data and
clock information to the Receiving Terminal in either a
Single-Rail or Dual-Rail format.
3.6.1
Receiving Terminal Equipment
Whenever a channel delivers Dual-Rail format to the
Terminal Equipment, it does so via the following sig-
nals.
RPOS(n)
RNEG(n)
RxClk(n)
Figure 26 illustrates the typical interface for the trans-
mission of data in a Dual-Rail Format from the Re-
ceive Section of a channel to the Receiving Terminal
Equipment.
Routing Dual-Rail Format Data to the
D4
D3
D2
D1
D0
RLOL(n)
RLOS(n)
ALOS(n)
DLOS(n)
DMO(n)
Read Only Read Only Read Only Read Only Read Only
COMMAND REGISTER CR2-(N)
D4
D3
D2
D1
D0
Reserved
Reserved
ALOSDIS(n)
DLOSDIS(n)
REQEN(n)
X
X
X
1
X
COMMAND REGISTER CR3-(N)
D4
D3
D2
D1
D0
(SR/DR)_(n)
LOSMUT(n)
RxOFF
RxClk(n)INV
Reserved
X
1x
x
x
x
相關(guān)PDF資料
PDF描述
XRT73L06 SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
XRT73L06IB SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
XRT73LC00A E3/DS3/STS-1 LINE INTERFACE UNIT
XRT73LC00AIV E3/DS3/STS-1 LINE INTERFACE UNIT
XRT73LC03A 3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
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
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*