參數(shù)資料
型號(hào)： XRT73L04
廠商： Exar Corporation
英文描述： 4 Channel E3/DS3/STS-1 Line Interface Unit(4通道 E3/DS3/STS-1線接口單元)
中文描述： 4頻道E3/DS3/STS-1線路接口單元（4通道E3/DS3/STS-1線接口單元）
文件頁(yè)數(shù)： 53/62頁(yè)
文件大?。?/td> 781K
代理商： XRT73L04
á
XRT73L04
4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
PRELIMINARY
REV. P1.0.5
49
When the Transmit Drive Monitor circuitry within a
given line is connected to the line, as illustrated in
Figure 34, 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 Monitor 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 Monitor Output)
signal toggles "High".
N
OTE
:
The Transmit Drive Monitor circuit does not have to
be used to operate the Transmit Section of the XRT73L04.
This is purely a diagnostic feature.
4.6
T
HE
TAOS (T
RANSMIT
A
LL
O
NE
S) F
EATURE
The XRT73L04 can command any channel to trans-
mit an all “1’s" pattern onto the line by toggling a sin-
gle 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 (pin 2, 85 or 84)
“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 XRT73L04 DS3/
E3/STS-1 Line Interface Unit IC are used to configure
the XRT73L04 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
Table 2 (repeated as Table 7), lists the Command
Registers, their Addresses and their bit-formats.
F
IGURE
34. T
HE
XRT73L04
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) Reserved
0
1
X
X
X
相關(guān)PDF資料
PDF描述
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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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XRT73L04A 制造商:EXAR 制造商全稱:EXAR 功能描述:4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
XRT73L04AIV 制造商:EXAR 制造商全稱:EXAR 功能描述:4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
XRT73L04B 制造商:EXAR 制造商全稱:EXAR 功能描述:4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
XRT73L04BES 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
XRT73L04BIV 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
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