DOWNLOAD Panasonic KX-NS0290CE Service Manual ↓ Size: 1.85 MB | Pages: 46 in PDF or view online for FREE

Model
KX-NS0290CE
Pages
46
Size
1.85 MB
Type
PDF
Document
Service Manual
Brand
Device
PBX / PRI30 CARD
File
kx-ns0290ce.pdf
Date

Panasonic KX-NS0290CE Service Manual ▷ View online

6
KX-NS0290CE
3 Specifications
PRI BLOCK
SLT BLOCK
PRI I/F
NUMBER OF PORT
PRI30 : 30 PORTS
Transfer rate
PRI30 : 2.048Mbit/s
Line code
PRI30 : HDB3
Framing
PRI30 : CRC-Multiframe or SMF(Sub Multiframe)
PRI FRAMER IC
Lantiq PEF2256H VER.2.2
DPLL
Build-in IC
Line i/f circuit
Main frontend parts
 Pulse trans
 Surge protector
 EMC filter
 Termination : 120
 RJ45 connecter
Line SYNC
Line SYNC clock Freq. : 2.048MHz
LED 
Status information LED : 5
SERR (RED)  OFF NORMAL / ON ALARM
RAI (RED)  OFF NORMAL / ON ALARM
AIS(RED)   OFF NORMAL / ON ALARM
SYNC(GREEN) ON/FLASH Normal
* FLASH = External Clock Master
DLK(GREEN) ON NORMAL / OFF ALARM
Line I/F connector
CO
RJ45 (Selected by SW501)
Extention
Onboard DC/DC circuit
Input : +15V
Output :  +3.3V
Self diagnosing function
Loopback test by FRAMER IC
Local Loopback function by primary Relay
EXT Interface
Number of Ports
2 Ports
Line interface circuit
2chSLIC/2chCODEC
(PEF4365T/PEB3265F) function
-52V/26mA feeding function
Dial Pulse signal detection function
DTMF signal detection function
Bell signal issuing sending
Hook detecting function
Ring trip detecting function
2w/4w converting function
CODEC function
Test function (loopback, Tone generation)
Programmable digital filtering function
Serial interface function
Caller ID(FSK)generator function
Surge protective function
EXT line interface connector
RJ45* Connector x 1
LED display circuit
None
Onboard DC/DC circuit
Input  :  +15V
Output :  +80V / -55V / +3.3V
7
KX-NS0290CE
4 Technical Descriptions
4.1.
Block Diagram
SLC2 BLOCK
+15V
VBATL
VHR
DC/DC
Ringer
and
T/R Voltage
DC/DC
+3.3V
PRI BLOCK
RJ45
LED X 5
SERR RAI AI SYNC DLK
LOOPBACK
RELAY
TRANS.
TX 2.4 : 1
RX 1 : 1
PEF2256H
Ver.2.2
SCLKR / SCLKX
SYPR / SYPX
RDO
XDI
CLK
SYNC
A0-7
D0-7
/CS
/WR
/RD
/RES
nINT0
MCLK
+3.3V
GND
RL1/RL2
XL1/XL2
OSC(16.384MHz)
HW_CLK (2MHz)
HW_FH
UHW
DHW
SLC
/INT1
Reset IC
NET_REF
RJ45
SLIC
2CH
PEF4365
SERIAL I/F
PCM HIGHWAY : 4MHz
/RESET0
/RESET1
/INT0
CODEC
2CH
PEB3265
8
KX-NS0290CE
4.2.
Circuit Operation (PRIBlock)
4.2.1.
ISDN Primary Rate Interface Function
4.2.1.1.
Line Interface Outline
The reference point of the line interface on the PRI30 card is Point S/T (Point U is not supported.) and the external and internal
line modes are supported as operating mode.
Also, the PRI23/PRI30 cards employ the PRI-IC (IC501) as the IC for Interface. See the "Line Interface Block" or the outline of
the interface connection. Shows the characteristics of the PRI-IC.
See the PRI-IC data sheet for detailed specifications.
Characteristics of the PRI-IC
4.2.1.2.
Line Interface Loopback
This card has a relay for loopback test on the primary side of the line to cut and divide into the line failure or the PBX's own fail-
ure, when there is a defect in operation.
Shows The outline diagram of the line interface loopback.
Outline diagram of the line interface
4.2.2.
Local Highway Interface Function
This card has the local highway at 2.048Mbps rate and local TSW in order to switch the talk channel (Bch), which is extracted
from ISDN primary rate by PRI-IC (IC501).
Also, the highway assignment is different for that the number of Bch differs in 2.048M system and 1.544M system. Shows the
highway timing.
For more information, see PRI-IC (IC501) databook.
Highway timing
Item
Contents
Remarks
Line Extraction Clock
2.048MHz
 
DPLL
Low Jitter DPLL for clk generation 
 
Elastic Buffer
Programmable elastic buffer (Rx & Tx)
 MAX  512kbit
Signaling Controller
• HDLC Controller 
• CAS Controller
• Multiframe synchronization and synthesis ITU-T G.732 
 
FIFO
64Byte x 2
 
PCM Highway Interface
2.048Mbps Highway Interface
 
µP-Interface
8bit parallel Bus (Intel)
9
KX-NS0290CE
4.3.
Circuit Operation (SLC2Block)
4.3.1.
Description of Functions and Circuits (SLC)
4.3.1.1.
CODEC Function (IC602)
Infineon(Lantiq) PEB3265 CODEC is installed. The analogue features such as BN, frequency characteristic, volume level, sidetone
are configured by FPGA CODEC interface DCLK, CS, DOUT, DIN. Also, it converts A/D to D/A, and 4-line-analogue signal to PCM
code in G.711 format.
4.3.1.2.
2W-4W Conversion
It converts 4W-VOX signal used in the PBX to 2W-VOX signal used in SLT, and vice versa. It consists of an operational amplifier in
the SLIC and a balanced network (B/N) in the CODEC. It can control the return loss of the audio data and frequency characteristics.
By modifying the CODEC program, it can match the corresponding impedance.
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