XRT5997IV Просмотр технического описания (PDF) - Exar Corporation

Номер в каталоге

Компоненты Описание

Список матч

XRT5997IV

Seven-Channel E1 Line Interface Unit

Exar Corporation 

XRT5997

PIN DESCRIPTION (CONT'D)

Pin#

Symbol

Type

44

TxNEG5

I

45

TxPOS5

I

46

RxNEG4

O

47

RxPOS4

O

Description

Transmitter - Negative Data Input – Channel 5:

The exact signal that should be applied to this input pin depends upon

whether the user intends to operate the “Transmit Section” (of the Channel 5)

in “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 TTIP5 and TRing5 output pins. The XRT5997

device will sample this input pin upon the falling edge of the TCLK5 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 via TTIP5 and TRing5 output pins.

Transmitter - Positive Data Input – Channel 5:

The exact signal that should be applied to this input pin depends upon

whether the user intends to operate the “Transmit Section” (of Channel 5) 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 TTIP5 and TRing5 output pins. The XRT5997

device will sample this input pin upon the falling edge of the TClk5 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 TTIP5 and TRing5 output pins.

Receiver 4 Negative Data Out:

This output pin will pulse “high” whenever Channel 4, within the XRT5997

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

at the RTIP4/RRing4 inputs.

Receiver 4 Positive Data Out:

This output pin will pulse “high” whenever Channel 4, within the XRT5997

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

RTIP4/RRing4 inputs.

Rev. 1.0.0

9

Share Link: