User manual

Page i
Document No. 80-15151 Issue 6 HEBER LTD
CONTENTS
1 INTRODUCTION.................................................................................................................... 1
2 NEW IN THIS RELEASE ....................................................................................................... 1
3 OVERVIEW ............................................................................................................................ 1
4 CIRCUIT SCHEMATIC DESCRIPTION ................................................................................ 2
4.1 S
HEET 1 .................................................................................................................................. 2
4.2 S
HEET 2 .................................................................................................................................. 2
4.3 S
HEET 3 .................................................................................................................................. 2
4.4 S
HEET 4 .................................................................................................................................. 2
4.5 S
HEET 5 .................................................................................................................................. 2
4.6 S
HEET 6 .................................................................................................................................. 2
4.7 S
HEET 7 .................................................................................................................................. 2
4.8 S
HEET 8 .................................................................................................................................. 3
4.9 S
HEET 9 .................................................................................................................................. 3
4.10 S
HEET 10 ................................................................................................................................ 3
4.11 S
HEETS 11, 12 & 13 ................................................................................................................ 3
5 CIRCUIT OPERATION .......................................................................................................... 4
5.1 P
OWER SUPPLIES..................................................................................................................... 4
5.2 R
ESET AND POWER FAIL DETECTION......................................................................................... 4
5.3 B
ATTERY BACKUP .................................................................................................................... 5
5.4 T
HE MC68340 PROCESSOR..................................................................................................... 5
5.4.1 CPU32 Processor Module ................................................................................................. 6
5.4.2 SIM40 System Integration Module..................................................................................... 6
5.4.3 DMA Controller Module ..................................................................................................... 8
5.4.4 Serial Module ..................................................................................................................... 8
5.4.5 Timer Module ..................................................................................................................... 9
5.5 FPGA.................................................................................................................................... 10
5.6 EPROM S
OCKETS / EPROM AUTOSELECT FEATURE ............................................................. 10
5.7 EPROM A
DDRESS LINE SCRAMBLING IN 16 BIT MODE............................................................ 11
5.7.1 2*27C040 EPROMs ......................................................................................................... 11
5.7.2 2*27C801 EPROMs ......................................................................................................... 11
5.8 M
EMORY EXPANSION.............................................................................................................. 13
5.9 O
PEN DRAIN OUTPUTS, OP0-63............................................................................................. 13
5.10 AUX O
UTPUTS, AUX0-7........................................................................................................ 14
5.11 I
NPUTS, IP0-31 ...................................................................................................................... 14
5.12 DIL S
WITCHES ....................................................................................................................... 15
5.13 S
OFTWARE CONTROLLED INDICATOR LED............................................................................... 15
5.14 O
N-BOARD PUSH BUTTON ...................................................................................................... 15
5.15 M
ULTIPLEXER......................................................................................................................... 15
5.16 M
ULTIPLEXED LAMP CURRENT SENSE ..................................................................................... 17
5.17 S
OUND GENERATION.............................................................................................................. 18
5.18 S
TEREO AMPLIFIER AND VOLUME CONTROLS........................................................................... 18
5.19 S
ERIAL I/O .............................................................................................................................19
5.20 I
NTERNAL I
2
C BUS.................................................................................................................. 19
5.20.1 Real Time Clock............................................................................................................... 19
5.20.2 E
2
PROM........................................................................................................................... 19