參數(shù)資料
型號(hào)： XRT73L04BIV
廠商： EXAR CORP
元件分類： 數(shù)字傳輸電路
英文描述： 4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
中文描述： DATACOM, PCM TRANSCEIVER, PQFP144
封裝： 20 X 20 MM, 1.40 MM HEIGHT, TQFP-144
文件頁(yè)數(shù)： 52/64頁(yè)
文件大小： 359K
代理商： XRT73L04BIV
XRT73L04B
4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
REV. 1.0.1
48
b. Operating in the Hardware Mode
To configure Channel (n) to operate in the Analog Lo-
cal Loop-Back Mode, set the LLB_(n) input pin (pin
76, 84, 97 or 105) “High" and the RLB_(n) input pin
(pin 77, 85, 96 or 104) "Low".
4.2
T
HE
D
IGITAL
L
OCAL
L
OOP
-B
ACK
M
ODE
.
When a given channel is configured to operate in the
Digital Local Loop-Back Mode, the channel ignores
any signals that are input to the RTIP and RRing in-
put pins. The Transmitting Terminal Equipment trans-
mits clock and data into the XRT73L04B via the TP-
Data, TNData and TxClk input pins. This data is pro-
cessed through the Transmit Clock Duty Cycle Adjust
PLL and the HDB3/B3ZS Encoder block. At this
point, this data is looped back to the HDB3/B3ZS De-
coder block. After this post-Loop-Back data has been
processed through the HDB3/B3ZS Decoder block, it
outputs to the Near-End Receiving Terminal Equip-
ment via the RPOS, RNEG and RxClk output pins.
Figure 34 illustrates the path that the data takes when
the chip is configured to operate in the Digital Local
Loop-Back Mode.
Configure a channel to operate in the Digital Local
Loop-Back Mode by employing either one of the fol-
lowing two-steps:
a. Operating in the Host Mode
To configure Channel (n) to operate in the Digital Lo-
cal Loop-Back Mode, write a "1" into both the LLB
and RLB bit-fields within Command Register CR4-(n).
COMMAND REGISTER CR4-(n)
COMMAND REGISTER CR4-(n)
D4
D3
D2
D1
D0
X
STS-1/DS3_(n)
E3_(n)
LLB_(n)
RLB_(n)
X
X
X
1
0
F
IGURE
34. T
HE
D
IGITAL
L
OCAL
L
OOP
-B
ACK
PATH
WITHIN
A
GIVEN
CHANNEL
AGC/
Equalizer
Peak
Detector
LOS Detector
Slicer
Clock
Recovery
Data
Recovery
Invert
Loop MUX
HDB3/
B3ZS
Decoder
LOSTHR_(n)
SDI
SDO
SClk
CS/(SR/DR)
REGR
RTIP_(n)
RRing_(n)
REQEN_(n)
RxClk_(n)
RPOS_(n)
RNEG_(n)
LCV_(n)
RLOS_(n)
LLB_(n)
RLB_(n)
TAOS_(n)
TPData_(n)
TNData_(n)
TxClk_(n)
Notes: 1. (n) = 0, 1, 2, or 3 for respective Channels
2. Serial Processor Interface input pins are shared by the four Channels in HOST Mode and redefined in
Hardware Mode.
RLOL_(n) EXClk_(n)
Device
Monitor
MTIP_(n)
MRing_(n)
Transmit
Logic
Duty Cycle Adjust
TxLEV_(n)
TxOFF_(n)
DMO_(n)
TTIP_(n)
TRing_(n)
Pulse
Shaping
HDB3/
B3ZS
Encoder
Serial
Processor
Interface
Digital Local
Loop-Back Path
D4
D3
D2
D1
D0
X
STS-1/DS3_(n)
E3_(n)
LLB_(n) RLB_(n)
X
X
X
1
1
相關(guān)PDF資料
PDF描述
XRT73L04 4 Channel E3/DS3/STS-1 Line Interface Unit(4通道 E3/DS3/STS-1線接口單元)
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
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XRT73L06 制造商:EXAR 制造商全稱:EXAR 功能描述:SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
XRT73L06ES 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
XRT73L06IB 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
XRT73L06IB-F 功能描述:接口 - 專用 RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59
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