[13] ELECTRICAL SECTION
1. ICU
A. BLOCK DIAGRAM
CPU BLOCK
R3710 BLOCK
IDT79R3081
54MHz
AD31-0
IA31-0
*1: Only for diagnostic program
373
AD31-0
245
Option
(Flash
Memory
Board)
Video signal
Sharp G/A
IDT79R3710
IOD7-0
External I/O #0
External I/O #0
IOD7-0
IDT79R3741
Data
Status
245
Bi-directional
Parallel I/F
(IEEE P1284)
to PC
(Personal
Computer)
LAN Board
LocalTalk &
RS232C I/F Board
Am85C30
*1: only for debugging
*2: only for Japanese Version
85C30
*2
Engine I/F
Mother Board
to PCU
(Process Control Unit)
(EX only)
Option Flash
memory
PWB (PS2)
(ASIC)
27MHz
8MB
(CPU)
(Not used)
FONT
PS2
FCT240
/BSYSCLK
SYSCLK
AD bus
Control signal
CPU
IDT79R3081-
54MHz
PAL16V8
/INT#
Power On setting)Fixed)
Control signal
AD bus
IDT79R3710
DRAM Control signal
DRAM address(10-0)
I/O Control signal
I/O DATA bus(16bit)
Centronics I/F
Engine I/F
SHARP SERVICE MANUAL JX8200SM [13] ELECTRICAL SECTION
13 – 1
Содержание JX-8200
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