KX-NS5170XSX, KX-NS5170X-SX - Panasonic PBX Service Manual (repair manual). Page 5

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This card, which is used in the free slot of KX-NS300/500 series system, can randomly connect four of SLT, DPT and APT. In DPT
connection, the XDP function allows SLT to be connected to each port in parallel.

Functional Block

Functional contents

Extension Interface

Number of Ports

4 ports

PT Interface

+40V/+15V Over current protective function, Voltage switching function Inter-
APT communications
  D (Upward: 0.25kbps, Downward: 0.69kbps)
  2W Ping-pong transmission system (31.25kbps)
Inter-DPT communications
  2B+D (144kbps) 2W Ping-pong transmission system (512kbps)
  Dch-control HDLC embeds eight channels in ASIC
Surge protective function

SLT Interface

-26V 26mA Feeding function
Dial-pulse signal detecting function
DTMF signal detecting function
Bell signal issuing function
MW voltage issuing function
Hook detecting function
Ring trip detecting function
2W/4W converting function
  CODEC function
  

/A Iaw switching function

  Test function (Loop back, Tone generation)
  Programmable digital filtering function
  Serial interface function
  Caller ID (FSK) generater
  PIO function
Surge protective function

DTMF Receiver

4 lines for each port 

Caller ID Generater

FSK/DTMF
4 lines for each port 

Extension Caller ID

Supported standard 

ITU-TV.23 (1200bps) FSK
BELL202 (1200bps) FSK

On-board Ringer

20/25Hz 75Vrms 
Phase control (Three-phase / Four-phase)

Control Block

CPU

NiosII included in DLC FPGA

DLC FPGA

Dual-port memory between CPU board and NiosII CPU

Flash ROM

1Mbyte

SRAM

256kbyte

ASIC

Digital PLL function
Local bus interface function
Time switch function, Gain controlling function, DPRAM function
Private telephone controlling interface function
Parallel IO function

External Interface 

RJ45: 4 ports