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Model
KX-NS1000RU
Pages
127
Size
3.84 MB
Type
PDF
Document
Service Manual
Brand
Device
PBX / PURE IP-PBX
File
kx-ns1000ru.pdf
Date

Panasonic KX-NS1000RU Service Manual ▷ View online

10
KX-NS1000RU
4.3.
Mother Board Circuit Operation
4.3.1.
Mother Board
1) Function
• PBX System Control  and Management
• Circuit Switching (includes gain adjustment function)
• Conference Call 
• Voice  Mail
• MOH
• PAGING
2) Hardware Configuration
• Power Supply : DC/DC Converter
• CPU : Dual ARM11core devices (650MHz) IC100
• FPGA : IC300
• Flash ROM : 8Mbyte [4Mbit x 16bit x 1]  (for boot programs) IC208
• SDRAM : 512Mbyte [128Mbit  x 8bit  x  4]  (for OS and application program area) IC101, IC102, IC104, IC105
• SRAM : 2Mbyte [1Mbit x 16bit x 1]  (for user configuration data backup) IC209
• Serial Flash ROM : 8Mbyte  (for internal MOH data) IC305
• USB 2.0 Hub Controller : IC603
• Gigabit Ethernet Switch (L2SW) : IC502
3) Interfaces
• Storage Memory Card  I/F x 1  (for OS , application programs , and Voice Mail data store) 
• USB I/F  x 1 (for UPS status monitoring)
• LAN I/F  x 3 (for maintenance and the LAN, WAN)
• MOH : External sound input x 1
• PAGING : External output x 1
• RS232C : x 1 (for system maintenance)
4) Operation Rating
• Power Input : +15V_CON
• Power Output : +15V (for DSP_Card/Line_Card/FAN/MOH)
+5VD_USB (for USB_VBUS)
+5.0VD (for DC/DC+1.8V, +0.98V)
+3.3V (for IO, FAX_Card, Storage Memory)
+3.3VD_B (for SRAM/RTC backup)
+2.5VD (for CPU, L2SW)
+1.8VD_CPU (for CPU, DDR2-SDRAM)
+1.8VD_AVDD (for L2SW)
+1.2VD_LDO (for FPGA_core)
+1.0VD_CPU (for CPU_core)
+1.0VD_L2CORE (for L2SW_core)
4.3.2.
Description of Each Part
LED Lamp (STATUS) : Turns on to indicate system operating condition.
LED Lamp (BATT ALARM) : Turns on to indicate the dropping of the lithium battery voltage (less than 2.8V).
LED Lamp (MASTER) : Turns on to indicate Master / Slave operating mode.
LED Lamp (LINK/ ACT) : Link status indication : OFF : Off-line/ON : Linked normally/Flashing : In communication
LED Lamp (1000 / 100/ 10) Data transmission speed indication : OFF : 10 Mbps/Yellow ON : 100 Mbps/Green ON: 1000 Mbps
System Initialize Switch : On default startup, set the switch to the "SYSTEM INITIALIZE" position for the power ON. Return the
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KX-NS1000RU
switch to the "NORMAL" position when the main power switch starts to flash. On normal startup, turn the power ON with the "NOR-
MAL" position.
USB connector : Connect to external UPS, to monitor UPS power alarm status.
LAN connector : MNT/LAN/WAN. Used for maintenance and the VoIP.
MOH : External music on-hold input.
PAGING : External PAGING output. Connect to the device with the built-in amplifier.
LED Indications
*1 The WAN Port is not used with PCMPR Software Version 1.0000.
Indication
Colour
Description
STATUS
Green
PBX status indication
• OFF:  Power  Off
• ON: Power On and running
• Flashing: Starting up/Logging in
Amber
PBX status indication
• ON: Ready to shutdown
• Flashing: Shutting down
Red
PBX status indication
• ON: Alarm (CPU stop, alarm for each optional service card)
• Flashing: Initialise failed
BATT ALARM
Red
Alarm indication
• OFF:  Normal
• ON:  Alarm
MASTER
Master unit
Green
Master unit status indication
• ON: MASTER
Amber
Master unit status indication
• Flashing: Factory default
Red
Master unit status indication
• ON: MASTER (Recovered/Under maintenance)
• Flashing: Alarm (Isolated)
Slave unit
Green
Slave unit status indication
• OFF:  SLAVE
Amber
Slave unit status indication
• ON:  SLAVE
• Flashing: Starting up/Logging in
Red
Slave unit status indication
• Flashing: Alarm (Isolated)
10BASE-T/
100BASE-TX/
1000BASE-T
MNT
1
LINK
Green
Link status indication
• OFF: Off-line
• ON: Linked normally
• Flashing: In communication
1000
Green/Yellow
Data transmission speed indication
• OFF: 10 Mbps
• Yellow ON: 100 Mbps
• Green ON: 1000 Mbps
LAN
2
LINK
Green
Link status indication
• OFF: Off-line
• ON: Linked normally
• Flashing: In communication
1000
Green/Yellow
Data transmission speed indication
• OFF: 10 Mbps
• Yellow ON: 100 Mbps
• Green ON: 1000 Mbps
WAN*1
3
LINK
Green
Link status indication
• OFF: Off-line
• ON: Linked normally
• Flashing: In communication
1000
Green/Yellow
Data transmission speed indication
• OFF: 10 Mbps
• Yellow ON: 100 Mbps
• Green ON: 1000 Mbps
12
KX-NS1000RU
4.3.3.
Circuit Description
1) Block1 (Schematic Diagram 1)
Block Name : DDR Memory Interface Circuit
Circuit Configuration :
• 512MByte DDR2 Memory(128Mbit x 8bit x 4pcs) : IC101/102/104/105
• 32bit interface 
• V ref (DDR Interface voltage generator)and Vtt ( DDR termination voltage generator) circuit
• DDR address, control signal termination
Description :
DDR memory Interface clock frequency is 375MHz, and this interface operates at double edge clock DDR2 interface. 
This memory is used for operating system and application program work memory.
2) Block2 (Schematic Diagram 2)
Block Name : Flash Memory , SRAM and Expansion bus buffer circuit
Circuit Configuration :
• 8MByte Flash Memory (4Mbit x 16bit) : IC208
• 2Mbyte SRAM Memory (1Mbit x 16bit) : IC209
• Boot strap registers ( for CPU startup configuration ) 
• Expansion bus address / data line buffer: IC200/201/207
• Initial / Normal mode Switch : SW200
Description :
 Flash ROM is used for system boot program area, when system power turns on, initial boot program is loaded from this Flash
ROM, and then CPU will load OS and application program from Storage Memory Card . And also FPGA configuration pro-
gram is stored on the Flash ROM.
SRAM is battery backup memory. This area is used for system data back up. Each memory is connected to the CPU expan-
sion bus interface.
3) Block3 (Schematic Diagram 3)
Block Name: FPGA Circuit
Circuit Configuration :
• FPGA : IC300
• SYSCLOCK (16.384MHz)
Description :
After CPU started up, FPGA is configured by CPU via PIO interface. FPGA provides various functions described as below. 
a) Interrupt Controller
b) DPLL and Clock Generator (used for option card interface)
c) Time Switch for PBX function
d) DTMF/TONE Generator
e) GPIO interface (used for LED control and Initial/Normal switch)
4) Block4 (Schematic Diagram 4)
Block Name : Gigabit Ethernet Switch Device and Ethernet Interfaces
Circuit Configuration :
• 7 port Gigabit Ethernet Switch : IC502
• RGMII Interface  x 2 (CPU GEMAC#0, GEMAC#1 port)
• FE PHY Interface x 2 (DSP1, DSP2 card)
• Gigabit Ethernet PHY Interface x 3 (MNT, LAN, WAN port)
Description :
 L2SW is used for VoIP packet exchange function. VoIP SIP packet which arrived from LAN port is transferred to CPU
(GEMAC port) and VoIP RTP packet is transferred to DSP1/DSP2 card. These packet exchange function is operated by
L2SW automatically based on Layer 2 (MAC level) address.
5) Block5 (Schematic Diagram 5)
Block Name: USB, RTC, RS232C Driver/Receiver Circuit
Circuit Configuration :
• USB Hub x 3 port  (CPU, FAX and front panel USB port) : IC603
• RTC (battery backup real time clock) : IC600
• RS232C Driver/Receiver (used for system maintenance console) : IC601
Description :
USB Hub is used for the communication between CPU and FAX card, FAX data is transferred via USB interface. And also
external UPS status monitoring function is provided via USB interface.
RTC is battery backup device, this device is working in the Real time clock function.
13
KX-NS1000RU
6) Block6 (Schematic Diagram 6)
Block Name : MOH, External Pager interface Circuit
Circuit Configuration :
• CODEC : IC700
Description :
EPG port is used for external paging function, MOH port is also used for external MOH sound input interface. This MOH inter-
face has AGC function to avoid large input level signal.
7) Block7 (Schematic Diagram 7)
Block Name : DSP, Door phone, FAN, RS232C, Power Connector Circuit
Description :
DSP1,2 and Door phone card are connected to expansion bus interface. And also these option card are powered from these
interface connectors.
FAN interface is used for FAN driving power supply, also FAN alarm signal is monitored via this connector.
Power connector is used for DC+15V power input interface. And DC/AC-Alarm signal is used to monitor Power Unit alarm sta-
tus.
8) Block8 (Schematic Diagram 8)
Block Name : FAX and optional service card (free slot) Storage Memory interface Circuit
Description :
FAX and Option card (free slot) are connected to expansion bus interface. Option card power supply function is also con-
tained.
Storage Memory Card  slot is connected to expansion bus interface too. CPU will access Storage Memory Card  Memory via
expansion bus interface.
9) Block9 (Schematic Diagram 9)
Block Name : Internal Power Supply Circuit and Reset Signal Generate
Circuit Configuration :
• DC-DC Converter (DC+15 to 3.3V/5.0V) : IC1200
• DC-DC Converter (DC+15 to 5.0V for USB) : IC1210
• DC-DC Converter (DC+5.0V to 1.8V) : IC1201
• DC-DC Converter (DC+5.0V to 0.98V) : IC1202
• Regulator (DC+3.3V to 2.5V) : IC1203
• Regulator (DC+3.3V to 1.2V) : IC1205
• Regulator (DC+1.8V to 0.9V) : IC103
Description :
Every voltage used in Motherboard is generated from DC+15V Input.
And also each output voltage monitored by voltage detection IC and reset signal is generated by these IC.
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