XRT5997 datasheet(8/37 Pages) EXAR

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XRT5997

Rev. 1.0.0

Pin#

Symbol

Type

Description

RxNEG2

Receiver 2 Negative Data Out:

This output pin will pulse “high” whenever Channel 2, within the XRT5997

device has received a “Negative Polarity” pulse, in the incoming line signal,

at RTIP2/RRing2 inputs.

RxPOS2

Receiver 2 Positive Data Out:

This output pin will pulse “high” whenever Channel 2, within the XRT5997

device has received a “Positive Polarity” pulse, in the incoming line signal, at

RTIP2/RRing2 inputs.

LOS2

Receiver 2 Loss of Signal:

This output pin toggles “high” if Channel 2, within the XRT5997 device has

detected a “Loss of Signal” condition in the incoming line signal.

DVDD

Positive Supply (+3.3V ± 5%). Digital Circuitry.

DVDD

Positive Supply (+3.3V ± 5%). Digital Circuitry.

DGND

Digital Ground: Digital Circuitry.

LOS5

Receiver 5 Loss of Signal:

This output pin toggles “high” if Channel 5, within the XRT5997 device has

detected a “Loss of Signal” condition in the incoming line signal.

Note: 1Internally pull-up with 50K resistor

RxPOS5

Receiver 5 Positive Data Out:

This output pin will pulse “high” whenever Channel 5, within the XRT5997

device has received a “Positive Polarity” pulse, in the incoming line signal, at

RTIP5/RRing5 inputs.

RxNEG5

Receiver 5 Negative Data Out:

This output pin will pulse “high” whenever Channel 5, within the XRT5997

device has received a “Negative Polarity” pulse, in the incoming line signal,

at RTIP5/RRing5 inputs.

TxClk5

Transmitter Clock Input – Channel 5:

If the user operates Channel 5 (within the XRT5997 device) in the “clocked”

mode, then the “Transmit Section” of the Channel 5 will use the falling edge of

this signal to sample the data at the TxPOS5 and TxNEG5 input pins.

NOTE: If the user operates the Channel 5 in the “clockless” mode, then the

Terminal Equipment should not apply a clock signal to this input pin.

PIN DESCRIPTION (CONT'D)

Note: 1 Internally pull-up with 50K resistor.

XRT5997 Datasheet(PDF) 8 Page - Exar Corporation

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