參數(shù)資料
型號: XRT75VL00DIVTR
廠商: Exar Corporation
文件頁數(shù): 2/92頁
文件大?。?/td> 0K
描述: IC LIU E3/DS3/STS-1 1CH 52TQFP
標準包裝: 1,000
類型: 線路接口裝置(LIU)
驅(qū)動器/接收器數(shù): 1/1
規(guī)程: DS3,E3,STS-1
電源電壓: 3.135 V ~ 3.465 V
安裝類型: 表面貼裝
封裝/外殼: 52-LQFP
供應(yīng)商設(shè)備封裝: 52-TQFP(10x10)
包裝: 帶卷 (TR)
XRT75VL00D
5
E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
REV. 1.0.4
51
TRING
O
Transmit Ring Output
The XRT75VL00D uses this pin along with TTIP to transmit a bipolar signal to
the line using a 1:1 transformer.
1
TxLEV
I
Transmit Line Build-Out Enable/Disable Select
This input pin is used to enable or disable the Transmit Line Build-Out circuit.
Setting this pin to "High" disables the Line Build-Out circuit. In this mode, par-
tially-shaped pulses are output onto the line via the TTIP and TRING output
pins.
Setting this pin to "Low" enables the Line Build-Out circuit. In this mode, shaped
pulses are output onto the line via the TTIPand TRING 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 pin to "1" if the cable length between the Cross-Connect and the
transmit output is greater than 225 feet.
2. Set this pin to "0" if the cable length between the Cross-Connect and the
transmit output is less than 225 feet.
This pin is active only if the following two conditions are true:
a. The XRT75VL00D is configured to operate in either the DS3 or SONET STS-
1 Modes.
b. The XRT75VL00D is configured to operate in the Hardware Mode.
NOTES:
1.
This pin is internally pulled down.
2.
If the XRT75VL00D is configured in HOST mode, this pin may be tied
to GND.
TRANSMIT INTERFACE
PIN #
SIGNAL NAME
TYPE
DESCRIPTION
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