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