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參數(shù)資料
| 型號： | XRT7302 |
| 廠商： | Exar Corporation |
| 英文描述： | 2 Channel E3/DS3/STS-1 Line Interface Unit(2通道 E3/DS3/STS-1線接口單元) |
| 中文描述： | 2頻道E3/DS3/STS-1線路接口單元（2通道E3/DS3/STS-1線接口單元） |
| 文件頁數(shù)： | 45/62頁 |
| 文件大?。?/td> | 715K |
| 代理商： | XRT7302 |
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PRELIMINARY
2 CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
XRT7302
REV. 1.1.6
41
The MUTing upon LOS feature for each Channel can
be enabled by writing a "1" into the LOSMUT(n) bit-
field in Command Register 3.
N
OTES
:
1. This step only enables the MUTing upon LOS fea-
ture in Channel(n).
2. Each channel(n) automatically declares an LOS
(Loss of Signal) condition anytime it has been conf-
gured to operate in either the Analog Local Loop-
Back or Digital Local Loop-Back modes. To config-
ure the chip to operate in either of these modes,
disable the MUTing-upon-LOS feature.
R
OUTING
THE
R
ECOVERED
T
IMING
AND
D
ATA
I
NFORMATION
TO
THE
R
ECEIVING
T
ERMINAL
E
QUIPMENT
3.7
Each channel in the XRT7302 takes the Recovered
Timing and Data information, converts it into CMOS
levels and routes it to the Receiving Terminal Equip-
ment via the RPOS(n), RNEG(n) and RxClk(n) output
pins.
Each channel of the XRT7302 can deliver the recov-
ered data and clock information to the Receiving Ter-
minal in either a Single-Rail or Dual-Rail format.
3.7.1
Routing Dual-Rail Format Data to the
Receiving Terminal Equipment
Whenever a channel of the XRT7302 delivers Dual-
Rail format to the Terminal Equipment, it does so via
the following signals:
RPOS(n)
RNEG(n)
RxClk(n)
Figure 22 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
.
The manner that a given channel transmits Dual-Rail
data to the Receiving Terminal Equipment is de-
scribed below and illustrated in Figure 23. Each
Channel(n) of the XRT7302 typically updates the data
on the RPOS(n) and RNEG(n) output pins on the ris-
ing edge of RxClk(n).
COMMAND REGISTER CR3-(N)
D4
D3
D2
D1
D0
SR/(DR)_(n)
LOSMUT(n)
RxOFF(n)
RxClk(n)INV
Reserved
X
1
X
X
X
F
IGURE
22. 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
XRT7302
TO
THE
R
ECEIVING
T
ERMINAL
E
QUIPMENT
(E3/DS3 or STS-1
Framer)
Terminal
Equipment
(E3/DS3 or STS-1
Exar E3/DS3/STS-1 LIU
Block
Receive
Logic
Block
RxPOS
RxNEG
RxClk
RPOS
RNEG
RxClk
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XRT73L02M | TWO CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT73L02MIV | TWO CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT73L02 | 2 Channel E3/DS3/STS-1 Line Interface Unit(2通道 E3/DS3/STS-1線接口單元) |
| XRT73L03A | 3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT |
| XRT73L03AIV | 3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT |
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| XRT73L00 | 制造商:EXAR 制造商全稱:EXAR 功能描述:E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT73L00A | 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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| XRT73L00AIV | 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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