參數資料
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: 27/62頁
文件大?。?/td> 715K
代理商: XRT7302
á
PRELIMINARY
2 CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
XRT7302
REV. 1.1.6
23
The intent behind this feature is to permit a system
designed for redundancy to quickly switch out a de-
fective line card and switch-in the back-up line card.
1.0
SELECTING THE DATA RATE
Each channel in the XRT7302 can be configured to
support the E3 (34.368 Mbps), DS3 (44.736 Mbps) or
SONET STS-1 (51.84 Mbps) rates and to operate in a
mode/data rate that is independent of the other chan-
nel.
Two methods are available to select the data rate for
each channel of the XRT7302.
1.1
C
ONFIGURING
C
HANNEL
(
N
)
Refer to Table 2 to determine the appropriate
Address for each Command Register of each chan-
nel in the XRT7302. The Command Register
description refers to CR(m)-(n), where (m) = 0 to 7
and (n) refers to a particular channel of the
XRT7302.
F
IGURE
6. F
UNCTIONAL
B
LOCK
D
IAGRAM
OF
THE
XRT7302
ENDECDIS
RLOS(n)
LLB(n)
RLB(n)
TAOS(n)
TPData(n)
TNData(n)
TxClk(n)
TxLEV(n)
TxOFF(n)
AGC/
Equalizer
Serial
Processor
Interface
Peak
Detector
LOS Detector
Slicer
Clock
Recovery
Data
Recovery
Invert
Loop MUX
HDB3/
B3ZS
Decoder
LOSTHR(n)
SDI
SDO
SClk
CS
REGR
RTIP(n)
RRing(n)
REQEN(n)
Channel 0
Channel 1
Notes: 1. (n) = 0 or 1 for the respective Channel
2. Serial Processor Interface input pins are shared by both Channels in HOST Mode and are redefined in Hardware Mode.
Device
Monitor
MTIP(n)
MRing(n)
DMO(n)
Transmit
Logic
Duty Cycle Adjust
TTIP(n)
TRing(n)
Pulse
Shaping
HDB3/
B3ZS
Encoder
E3_Ch(n)
STS-1/DS3_Ch(n)
Host/(HW)
RLOL(n)
EXClk(n)
RxOFF
RxClkINV
RxClk(n)
RPOS(n)
RNEG(n)
LCV(n)
Tx
Control
相關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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