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參數(shù)資料
| 型號(hào)： | XRT7302 |
| 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> | 715K |
| 代理商： | XRT7302 |
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2 CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
XRT7302
REV. 1.1.6
3
PIN DESCRIPTIONS
PIN DESCRIPTION
P
IN
#
S
IGNAL
N
AME
T
YPE
D
ESCRIPTION
1
TxLEV0
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
TTIP0 and TRing0 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 TTIP0 and
TRing0 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 XRT7302 is configured to operate in either the DS3 or SONET STS-1
Modes.
b. The XRT7302 is configured to operate in the Hardware Mode.
N
OTE
:
If the XRT7302 is going to be operating in the HOST Mode, this pin
should be tied to GND.
2
TAOS0
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 TxClk0.
N
OTES
:
1. This input pin is ignored if the XRT7302 is operating in the HOST
Mode.
2. If the XRT7302 is going to be operating in the HOST Mode, this pin
should tie tied to GND.
3
DVDD
****
Transmit Digital VDD (for Transmitter 0)
4
DMO0
O
Drive Monitor Output - Channel 0:
If no transmitted AMI signal is present on MTIP0 and MRing0 input pins for
128±32 TxClk periods, then DMO0 toggles and remains "High" until the next
AMI signal is detected.
5
DGND
****
Transmit Digital GND (for Transmitter 0)
6
AGND
Analog GND (Substrate Connection) - Channel 0
7
DVDD
****
Receive Digital VDD (for Receiver 0)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XRT73L02M | TWO CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT73L02MIV | TWO CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT73L02 | 2 Channel E3/DS3/STS-1 Line Interface Unit(2通道 E3/DS3/STS-1線接口單元) |
| XRT73L03A | 3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT |
| XRT73L03AIV | 3 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 |
|---|---|
| XRT7302IV | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PCM Transceiver |
| XRT73L00 | 制造商:EXAR 制造商全稱:EXAR 功能描述:E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT73L00A | 制造商:EXAR 制造商全稱:EXAR 功能描述:E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT73L00AES | 功能描述:界面開發(fā)工具 Eval System for XRT73L00A Series RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
| XRT73L00AIV | 制造商:EXAR 制造商全稱:EXAR 功能描述:E3/DS3/STS-1 LINE INTERFACE UNIT |
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