- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄372950 > XRT73LC00 (Exar Corporation) E3/DS3/STS-1 LINE INTERFACE UNIT PDF資料下載
參數(shù)資料
| 型號(hào)： | XRT73LC00 |
| 廠商： | Exar Corporation |
| 英文描述： | E3/DS3/STS-1 LINE INTERFACE UNIT |
| 中文描述： | E3/DS3/STS-1線路接口單元 |
| 文件頁數(shù)： | 44/53頁 |
| 文件大?。?/td> | 604K |
| 代理商： | XRT73LC00 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁當(dāng)前第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁
XRT73L00
E3/DS3/STS-1 LINE INTERFACE UNIT
REV. 1.2.0
á
41
B. If the XRT73L00 is operating in the Hardware
Mode
Set both the LLB input pin (pin 14) and the RLB input
pin (pin 15) to “High”.
N
OTES
:
1. The Digital Local Loop-Back Mode feature works
even if the transmitter is turned off via the TXOFF
feature.
2. The XRT73L00 automatically declares an LOS
Condition any time it has been configured to oper-
ate in either the Analog Local Loop-Back or Digital
Local Loop-Back Modes. Consequently, the MUT-
ing -upon -LOS must be disabled prior to configur-
ing the device to operate in either of these local
Loop-Back modes.
T
HE
R
EMOTE
L
OOP
-B
ACK
M
ODE
When the XRT73L00 is configured to operate in the
Remote Loop-Back Mode, it ignores any signals that
are input to the TPDATA and TNDATA input pins. The
XRT73L00 receives the incoming line signal via the
RTIP and RRING input pins. This data is processed
through the Receive Section of the XRT73L00 and
outputs to the Receive Terminal Equipment via the
RPOS, RNEG, RCLK1 and RCLK2 output pins. Addi-
tionally, this data is internally looped back into the
Pulse-Shaping block in the Transmit Section. At this
point, this data is routed through the remainder of the
Transmit Section of the XRT73L00 and transmitted
out onto the line via the TTIP and TRING output pins.
Figure 30 illustrates the path that the data takes in the
XRT73L00 when the chip is configured to operate in
the Remote Loop-Back Mode.
4.3
During Remote Loop-Back operation, any data which
is inputted via the RTIP and RRING input pins is also
outputted to the Terminal Equipment via the RPOS,
RNEG and RCLK output pins.
The XRT73L00 can be configured to operate in the
Remote Loop-Back Mode by employing either one of
the following two steps
If the XRT73L00 is operating in the HOST Mode:
Access the Microprocessor Serial Interface and write
a “1” into the RLB bit-field and a “0” in the LLB bit-field
in Command Register CR4.
COMMAND REGISTER CR4 (ADDRESS = 0X04)
D4
D3
D2
D1
D0
X
STS-1/DS3
E3
LLB
RLB
X
X
X
1
1
F
IGURE
30. T
HE
R
EMOTE
L
OOP
-B
ACK
P
ATH
IN
THE
XRT73L00
AGC/
Equalizer
Peak
Detector
LOS Detector
Slicer
Clock
Recovery
Data
Recovery
Invert
Loop MUX
HDB3/
B3ZS
Decoder
LOSTHR
SDI
SDO/LCV
SCLK
CS
REGRESET
RTIP
RRING
REQDIS
RCLK1
RCLK2/LCV
RPOS
RNEG
DR/SR
RLOS
LLB
RLB
ENDECDIS
TAOS
TPDATA
TNDATA
TCLK
RLOL EXCLK
Device
Monitor
MTIP
MRING
Transmit
Logic
Duty Cycle Adjust
TXLEV
TXOFF
DMO
TTIP
TRING
Pulse
Shaping
HDB3/
B3ZS
Encoder
Serial
Processor
Interface
Remote
Loop-Back Path
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XRT73LC00IV | E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT73L00 | E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT73L00A | E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT73L00AIV | E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT75L03DIV | Telecomm/Datacomm |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT73LC00A | 制造商:EXAR 制造商全稱:EXAR 功能描述:E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT73LC00A_08 | 制造商:EXAR 制造商全稱:EXAR 功能描述:E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT73LC00AES | 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 |
| XRT73LC00AIV | 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 |
| XRT73LC00AIV-F | 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI 1-Ch DS3, E3, SONET 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，3分鐘左右您將得到回復(fù)。