DP-3510, DP-4510, DP-6010, DP-3520, DP-4520, DP-6020 (serv.man2) - Panasonic Copying Equipment Other Service Manuals (repair manual). Page 6

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DP-3520/4520/6020

DP-3510/4510/6010

NOV 2003

Ver. 4.00

The System CPU (PPC405PM) is a 32-bit RISC (Reduced Instruction Set Computer) type of CPU and
EBC Control (ROM/SRAM), PC100 SDRAM Control, PCI Control, DMA Control, Serial Communication 
Port, Timer, Interrupt Control, Parallel Port Control, Ethernet MAC and IIC Control are integrated into 1 
chip. 
The EBC is connected to the Power-on Boot space. The 405 processor will begin with an initial fetch to
address 0xFFFFFFFC. The EBC is setup to respond to this Boot address and the request will go to
bank 0. This bank must have a ROM attached with the Boot code to begin the processor execution.

• EBC Control

A 7port peripheral bus control and is used to transfer data between the following devices.
Boot ROM(IC12)
Main Program F-ROM(IC2)
System Backup F-ROM(IC3)
API(IC11)
Option card slots(CN62,63,64)
Option FAX Board

• SDRAM Control

Generates High Speed SDRAM Control Signal and Refresh Control when the power is ON.

• PCI Control

A 6ch PCI control bus and is used to transfer data between the following devices.
Imaging ASIC (ISIS)

• DMA Control

A 2ch DMA Control and is used to transfer data between the following devices.
Communication CODEC (MN86064)

• Serial Communication Port

A 3ch Serial Communication Port and is used to interface the following devices.
CPU: Panel Unit (Panel CPU)
CPU: Sub CPU for Scanning and Printing (M16C/80)
CSS Debug Port for PC

• Timer Control

Used to program the standard timer.

• Interrupt Control

Controls receipt & transfer to CPU the interrupt from ISIS, Modem, LSI, Option, etc.

• I/O Port(DZZSP58025)

Used to control lines and reset control around LSI, etc.

• Parallel Port Control

Supports ECP Mode.

• Ethernet MAC

Supports Auto-sensing 10/100base, full / half duplex modes.

• IIC Control

A 1ch IIC Port and is used to interface for SPC Program Down Load.

Consists of the following memory.

• F-ROM (IC2: 4MB) used for Main programming.
• F-ROM (IC3: 2MB) used for System Backup and Data Image Memory.

During a blackout, backs up image data.

• SDRAM (IC13~16) contains the Programs for System Backup and Data Image Memory.

Boot Program and the Main Program execute this Memory.

• F-ROM (FRM8: 8MB) used for Optional PCL or PS/PCL Programming.
• F-ROM (FRM8: 8MB) used for Optional Internet Fax Programming.

During a blackout, backs up the Program.