KX-NCP1280XJ - Panasonic PBX Service Manual (repair manual). Page 5

5

Function

Description

BRI Line Interface

Number of Ports

BRI2:2Ports (4Line:2B 

× 2)

Transfer Rate

192Kbit/s

Line Code

AMI

BRI Line Interface IC

PEB21150 made by Infineon
Major Function
Framer
Line Driver/Receiver
HDLC Controller (D channel)
Clock Extraction/Monitoring
Elastic Buffer (Bchannel)

Line Interface Circuit (IC)

Main Front End Circuit
Pulse Transformer
Surge Absorber
EMC Fitter
Terminating Resistance

DC Supply circuit

Supplies DC power during the intercom mode
Supplied voltage:40V
Max. power supply:4.5W [max]/1 line
BRI2

→9W[max]/The entire board

Power supply mode:Separate-line power supply mode
Phantom power supply mode
Power supply ON/OFF switching function (Software regulated)
Surge protection function
Software protection by comparator

→Relay OFF

Hardware protection by poly-switch

eSAMSON (ASIC)

EC Bus Interface Functional (Slave)
H.100 Bus Interface Functional
Digital PLL Functional Local Bus Interface Functional (Compatible with legacy)
Timing Switch Function, Gain Control Function, FIFO/DPRAM Function
See the specification of eSAMSON for details.

eSAMSON (ASIC)

Card State Display LED:1
Line State Display LED:2

Lin Interface Connector

RJ45:2ports

On-board DC/DC Power Supply

Input+15V
Output+3.3V

Self-diagnostic Functional

Condition: Port 1

→outside line, Port 2 →extension line