參數(shù)資料
型號(hào)： XRT5997IV-F
廠商： Exar Corporation
文件頁(yè)數(shù)： 34/37頁(yè)
文件大?。?/td> 0K
描述： IC LIU E1 7CH 3.3V 100TQFP
標(biāo)準(zhǔn)包裝： 90
類型： 線路接口裝置（LIU）
驅(qū)動(dòng)器/接收器數(shù)： 7/7
規(guī)程： E1
電源電壓： 3.14 V ~ 3.47 V
安裝類型： 表面貼裝
封裝/外殼： 100-LQFP
供應(yīng)商設(shè)備封裝： 100-TQFP（14x14）
包裝： 托盤
XRT5997
6
Rev. 1.0.0
PIN DESCRIPTION (CONT'D)
Pin#
Symbol
Type
Description
26
TxNEG3
I
Transmitter - Negative Data Input – Channel 3:
The exact signal that should be applied to this input pin depends upon
whether the user intends to operate the “Transmit Section” (of Channel 3) in
the “Clocked” or “Clockless” Mode.
Clocked Mode:
The Terminal Equipment should apply bit-wide NRZ pulses on this input
pin, whenever the Terminal Equipment needs to transmit a “negative-
polarity” pulse onto the line via TTIP3 and TRing3 output pins. The
XRT5997 device will sample this input pin upon the falling edge of the
TClk3 signal.
Clockless Mode:
The Terminal Equipment should apply RZ pulses to this input pin, anytime
the Terminal Equipment needs to transmit a “negative-polarity” pulse onto
the line viaTTIP3 and TRing3 output pins.
27
TxPOS3
I
Transmitter - Positive Data Input – Channel 3:
The exact signal that should be applied to this input pin depends upon
whether the user intends to operate the “Transmit Section” (of Channel 3) in
the “Clocked” or “Clockless” Mode.
Clocked Mode:
The Terminal Equipment should apply bit-wide NRZ pulses on this input
pin, whenever the Terminal Equipment needs to transmit a “positive-
polarity” pulse onto the line via TTIP1 and TRing1 output pins. The
XRT5997 device will sample this input pin upon the falling edge of the
TClk1 signal.
Clockless Mode:
The Terminal Equipment should apply RZ pulses to this input pin, anytime
the Terminal Equipment needs to transmit a “positive-polarity” pulse onto the
line via TTIP1 and TRing1 output pins).
28
LOS3
O
Receiver 3 – Loss of Signal Output Indicator:
This output pin toggles “high” if Channel 3, within the XRT5997 device has
detected a “Loss of Signal” condition in the incoming line signal.
29
RxPOS3
O
Receiver 3 Positive Data Out:
This output pin will pulse “high” whenever Channel 3, within the XRT5997
device has received a “Positive Polarity” pulse, in the incoming line signal, at
RTIP3/RRing3 inputs.
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