參數(shù)資料
型號(hào)： XRT73LC03AIV
廠商： EXAR CORP
元件分類： 數(shù)字傳輸電路
英文描述： 3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
中文描述： DATACOM, PCM TRANSCEIVER, PQFP120
封裝： 14 X 20 MM, LQFP-120
文件頁(yè)數(shù)： 53/61頁(yè)
文件大小： 720K
代理商： XRT73LC03AIV
XRT73LC03A
3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
REV. 1.0.1
51
When the Transmit Drive Monitor circuitry within a
given line is connected to the line, as illustrated in
Figure 36, then it monitors the line for transitions. As
long as the Transmit Drive Monitor circuitry detects
transitions on the line via the MTIP_(n) and
MRing_(n) pins, then it keeps the DMO (Drive Moni-
tor Output) signal "Low". However, if the Transmit
Drive Monitor circuit detects no transitions on the line
for 128+32 TxClk periods, then the DMO (Drive Moni-
tor Output) signal toggles "High".
N
OTE
:
The Transmit Drive Monitor circuit does not have to
be used to operate the Transmit Section of the
XRT73LC03A. This is purely a diagnostic feature.
4.6
T
HE
TAOS (T
RANSMIT
A
LL
O
NE
S) F
EATURE
The XRT73LC03A can command any channel to
transmit an all “1’s" pattern onto the line by toggling a
single input pin or by setting a single bit-field within
one of the Command Registers to "1".
N
OTE
:
When this feature is activated, the Transmit Section
of the configured channel overwrites the Terminal Equip-
ment data with this all “1’s" pattern.
a. Operating in the Hardware Mode
Configure Channel(n) to transmit an all “1’s" pattern
by toggling the TAOS_(n) input pin “High". Terminate
the all “1’s" pattern by toggling the TAOS_(n) input pin
“Low".
b. Operating in the HOST Mode
Configure Channel(n) to transmit an all “1’s" pattern
by writing to Command Register CR1-(n) and setting
the TAOS_(n) bit-field (bit D3) to "1".
COMMAND REGISTER CR1-(n)
Terminate the all “1’s" pattern by writing to Command
Register CR1-(n) and setting the TAOS_(n) bit-field
(D3) to "0".
5.0
THE MICROPROCESSOR SERIAL INTER-
FACE
The on-chip Command Registers of XRT73LC03A
DS3/E3/STS-1 Line Interface Unit IC are used to con-
figure the XRT73LC03A into a wide-variety of modes.
This section discusses the following:
1. The description of the Command Registers.
2. A description on how to use the Microprocessor
Serial Interface.
5.1
D
ESCRIPTION
OF
THE
C
OMMAND
R
EGISTERS
(repeated as Table 7), lists the Command Registers,
their Addresses and their bit-formats.
F
IGURE
36. T
HE
XRT73LC03A
EMPLOYING
THE
T
RANSMIT
D
RIVE
M
ONITOR
F
EATURES
R1 = 31.6
R2 = 31.6
Channel (n)
TxPOS_(n)
TxNEG_(n)
TxLineClk_(n)
TTIP_(n)
TRing_(n)
TPData_(n)
TNData_(n)
TxClk_(n)
Only One Channel Shown
1:1
J1
BNC
MTIP_(n)
MRing_(n)
R3 = 270
R4 = 270
D4
D3
D2
D1
D0
TxOFF_(n) TAOS_(n) TxClkINV_(n) TxLEV_(n) TxBIN_(n)
0
1
X
X
X
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XRT73LC03AIVF 制造商:Exar Corporation 功能描述:Line Interface Unit 51.84Mbps DS3/E3/STS-1 Serial 120-Pin LQFP
XRT73LC03AIV-F 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI 3-Ch DS3, E3, STS-1 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
XRT73LC04A 制造商:EXAR 制造商全稱:EXAR 功能描述:4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
XRT73LC04A_08 制造商:EXAR 制造商全稱:EXAR 功能描述:4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
XRT73LC04AES 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
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