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CONTENTS
1 OVERVIEW................................................................................................................................................ 1-1
General ........................................................................................................................................................ 1-1
System Configurations (Example)................................................................................................................ 1-1
Specifications ............................................................................................................................................... 1-2
Memory Map ................................................................................................................................................ 1-6
I/O Port Map ................................................................................................................................................. 1-7
Interrupt Level .............................................................................................................................................. 1-8
Pin assignments........................................................................................................................................... 1-9
Appendix B : Dip Switches and Jumpers ................................................................................................... 1-16
2 Description of Operation ............................................................................................................................ 2-1
JS-170FR Block Diagram ............................................................................................................................ 2-1
Description of Main PCB Circuits ................................................................................................................. 2-2
2.1.1
CPU PENTIUM-II 266MHz or 333MHz (Refer to the page 4-1.) ................................................ 2-2
2.1.2
Chip set FW82443BX, FW82371EB (Refer to the page 4-1 and page 4-3.).............................. 2-2
2.1.2.1
FW82371EB Pin Assignment .................................................................................................. 2-3
2.1.2.2
RTC (Real Time Clock) circuit ................................................................................................. 2-9
2.1.2.3
IDE interface .......................................................................................................................... 2-10
2.1.2.4
USB interface......................................................................................................................... 2-12
2.1.3
Main RAM circuit....................................................................................................................... 2-13
2.1.4
BIOS ROM................................................................................................................................ 2-14
2.1.5
IT8673F circuit .......................................................................................................................... 2-15
2.1.5.1
IT8673F Pin Assignment ....................................................................................................... 2-16
2.1.5.2
Serial port (COM1, 2)............................................................................................................. 2-18
2.1.5.3
Parallel port interface circuit .................................................................................................. 2-20
2.1.5.4
FDD interface circuit .............................................................................................................. 2-21
2.1.5.5
Keyboard controller circuit ..................................................................................................... 2-23
2.1.5.6
PS/2 mouse controller circuit................................................................................................. 2-25
2.1.6
Serial port (COM3, 4)................................................................................................................ 2-26
2.1.7
VGA circuit (Refer to the page 4-4.) ......................................................................................... 2-28
2.1.7.1
SM710 Pin Assignment ......................................................................................................... 2-29
2.1.7.2
LCD interface circuit (Refer to the page 4-4.)........................................................................ 2-33
2.1.7.3
Back-Lite control circuit ......................................................................................................... 2-34
2.1.7.4
CRT interface ........................................................................................................................ 2-35
2.1.8
Piezoelectric buzzer circuit ....................................................................................................... 2-36
2.1.9
Hardware reset circuit............................................................................................................... 2-37
2.1.10
Clock......................................................................................................................................... 2-38
Summary of Contents for JS-170FR Series
Page 2: ......
Page 10: ......
Page 30: ...1 20 ...
Page 80: ...2 50 ...
Page 101: ...3 17 LCD DISPLAY TEST 6 Video Test ENTER 1 OK or 2 NG ...
Page 134: ...4 JS 170FR PCB s 4 1 Main PCB 4 1 1 Main PCB Schematic Diagram 1 10 4 1 ...
Page 135: ...4 1 1 Main PCB Schematic Diagram 2 10 4 2 ...
Page 136: ...4 1 1 Main PCB Schematic Diagram 3 10 4 3 ...
Page 137: ...4 1 1 Main PCB Schematic Diagram 4 10 4 4 ...
Page 138: ...4 1 1 Main PCB Schematic Diagram 5 10 4 5 ...
Page 139: ...4 1 1 Main PCB Schematic Diagram 6 10 4 6 ...
Page 140: ...4 1 1 Main PCB Schematic Diagram 7 10 4 7 ...
Page 141: ...4 1 1 Main PCB Schematic Diagram 8 10 4 8 ...
Page 142: ...4 1 1 Main PCB Schematic Diagram 9 10 4 9 ...
Page 143: ...4 1 1 Main PCB Schematic Diagram 10 10 4 10 ...
Page 144: ...4 1 2 Main PCB Parts Location 4 11 ...
Page 145: ...4 2 MB PCB 4 2 1 MB PCB Schematic Diagram 4 17 ...
Page 146: ...4 18 4 2 2 MB PCB Parts Location ...
Page 148: ...4 3 Peripheral PCB 4 3 1 Peripheral PCB Schematic Diagram 4 20 ...
Page 149: ...4 21 4 3 2 Peripheral PCB Parts Location ...
Page 152: ...5 2 Main PCB 75 Peripherals ...
Page 153: ...5 3 Power Supply Peripherals ...
Page 154: ...5 4 Customer Display Peripherals ...
Page 155: ...5 5 LCD Peripherals ...
Page 156: ...5 6 Inverter PCB Peripherals ...
Page 161: ...Printed in Japan ...