參數(shù)資料
型號: XRT73L02
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(shù): 7/62頁
文件大?。?/td> 716K
代理商: XRT73L02
á
XRT73L02
2 CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
PRELIMINARY
REV. P1.1.0
3
PIN DESCRIPTIONS
PIN DESCRIPTION
P
IN
#
S
IGNAL
N
AME
T
YPE
D
ESCRIPTION
1
TxLEV_0
I
Transmit Line Build-Out Enable/Disable Select - Channel 0:
This input pin is used to enable or disable the Transmit Line Build-Out circuit of
Channel 0.
Setting this pin to "High" disables the Line Build-Out circuit of Channel 0. In
this mode, Channel 0 outputs partially-shaped pulses onto the line via the
TTIP_0 and TRing_0 output pins.
Setting this pin to "Low" enables the Line Build-Out circuit of Channel 0. In
this mode, Channel 0 outputs shaped pulses onto the line via the TTIP_0 and
TRing_0 output pins.
To comply with the Isolated DSX-3/STSX-1 Pulse Template Requirements per
Bellcore GR-499-CORE or Bellcore GR-253-CORE:
1. Set this input pin to "1" if the cable length between the Cross-Connect and
the transmit output of Channel 0 is greater than 225 feet.
2. Set this input pin to "0" if the cable length between the Cross-Connect and
the transmit output of Channel 0 is less than 225 feet.
This pin is active only if the following two conditions are true:
a. The XRT73L02 is configured to operate in either the DS3 or SONET STS-1
Modes.
b. The XRT73L02 is configured to operate in the Hardware Mode.
N
OTE
:
If the XRT73L02 is going to be operating in the HOST Mode, this pin
should be tied to GND.
2
TAOS_0
I
Transmit All Ones Select - Channel 0:
A “High" on this pin causes the Transmit Section of Channel 0 to generate and
transmit a continuous AMI all “1’s" pattern onto the line. The frequency of this
"1’s" pattern is determined by TxClk_0.
N
OTES
:
1. This input pin is ignored if the XRT73L02 is operating in the HOST
Mode.
2. If the XRT73L02 is going to be operating in the HOST Mode, this pin
should tie tied to GND.
3
DVDD_0
****
Transmit Digital VDD (for Transmitter 0)
4
DMO_0
O
Drive Monitor Output - Channel 0:
If no transmitted AMI signal is present on MTIP_0 and MRing_0 input pins for
128±32 TxClk periods, then DMO_0 toggles and remains "High" until the next
AMI signal is detected.
5
DGND_0
****
Transmit Digital GND (for Transmitter 0)
6
AGND_0
Analog GND (Substrate Connection) - Channel 0
7
DVDD_0
****
Receive Digital VDD (for Receiver 0)
相關(guān)PDF資料
PDF描述
XRT73L03A 3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
XRT73L03AIV 3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
XRT73L03B 3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
XRT73L03BIV 3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
XRT73L04A 4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XRT73L02M 制造商:EXAR 制造商全稱:EXAR 功能描述:TWO CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
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XRT73L02MIV 制造商:EXAR 制造商全稱:EXAR 功能描述:TWO CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
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XRT73L02MIVTR-F 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