IDT82V2044E データシートの表示（PDF） - Integrated Device Technology

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IDT82V2044E

QUAD CHANNEL T1/E1/J1 SHORT HAUL LINE INTERFACE UNIT

Integrated Device Technology 

QUAD CHANNEL T1/E1/J1 SHORT HAUL LINE INTERFACE UNIT

INDUSTRIAL

TEMPERATURE RANGES

3.3.10 G.772 NON-INTRUSIVE MONITORING

In applications using only three channels, channel 1 can be configured

to monitor the data received or transmitted in any one of the remaining chan-

nels. The MON[3:0] bits (GCF1, 60H) determine which channel and which

direction (transmit/receive) will be monitored. The monitoring is non-intru-

sive per ITU-T G.772. Figure-11 illustrates the concept.

The monitored line signal (transmit or receive) goes through Channel

1's Clock and Data Recovery. The signal can be observed digitally at the

RCLK1, RD1/RDP1 and RDN1. If Channel 1 is configured to Remote Loop-

back while in the Monitoring mode, the monitored data will be output on

TTIP1/TRING1.

LOSn

RCLKn

RDn/RDPn

CVn/RDNn

LOS/AIS

Detector

B8ZS/

HDB3/AMI

Decoder

Jitter

Attenuator

Channel N (N > 2)

Clock and

Data

Recovery

Data

Slicer

Adaptive

Equalizer

Receiver

Internal

Termination

RTIPn

RRINGn

TCLKn

TDn/TDPn

TDNn

B8ZS/

HDB3/AMI

Encoder

Jitter

Attenuator

Waveform

Shaper

Line

Driver

Transmitter

Internal

Termination

TTIPn

TRINGn

LOS1

RCLK1

RDn/RDP1

CVn/RDN1

TCLK1

TDn/TDP1

TDN1

LOS/AIS

Detector

B8ZS/

HDB3/AMI

Decoder

Jitter

Attenuator

Remote

Loopback

B8ZS/

HDB3/AMI

Encoder

Jitter

Attenuator

Channel 1

Clock and

Data

Recovery

Data

Slicer

Adaptive

Equalizer

Receiver

Internal

Termination

Waveform

Shaper

Line

Driver

Transmitter

Internal

Termination

Figure-11 G.772 Monitoring Diagram

G.772

Monitor

RTIP1

RRING1

TTIP1

TRING1

21

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