Mfbs Board; Main Controller - Konica Minolta bizhub 200 Service Manual

3. Summary of Board functions
3.1

MFBS Board

• The MFBS board is a main controller that has an external 32 (internal 64) bit RISC pro-
cessor, and controls circuits by software. As the primary functions, it controls the trans-
mitter, reader, printer, mechanically moving parts, operation unit, and network.
3.1.1

Main Controller

A. Overview
• The main controller has a RM5231A CPU and a DEM LSI for controlling several blocks,
and work memory (SDRAM).
• The main controller also uses the information of the backup memory (SRAM) mounted
on ROM board for various controls.
B. Block diagram
CPU
RM5231A
MEM board I/F
MEM board I/F
Ni-MH
Back up circuit (RAMS)
battery
6
Address latch
DEM-LSI
AD bus
SDRAM
for
rotation
SDRAM
work
file
Engine I/F
Theory of Operation Ver. 1.0 Aug. 2005
Address bus (24 bit)
EUROPA
Data bus (32 bit)
USB
Image process LSI
Controller
ESP3
USB2.0
Full speed
BCRS I/F
RAMS board I/F
Compact Flash I/F
FAXS board I/F
LAN Connector
10/100baseTX
LAN
PCI bus
Controller
USB Connector
4040T2E607AA