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Application Note
iii
Point of Sale Terminal Design Guide
Contents
1.0
Introduction
..................................................................................................................5
1.1
Design Overview...................................................................................................5
1.2
POS Terminal Design Features ............................................................................5
POS Terminal Design Overview
...........................................................................6
2.1
Core Components .................................................................................................7
2.1.1
Intel Embedded Processor Module EMBMOD133...................................7
2.1.2
Intel 82371SB PCI ISA IDE Xcelerator.....................................................7
2.1.3
Dynamic Random Access Memory (DRAM) ............................................7
2.1.4
Flash BIOS...............................................................................................7
2.2
Peripheral components .........................................................................................8
2.2.1
Video Controller........................................................................................8
2.2.2
PS/2 Keyboard .........................................................................................8
2.2.3
RTC/NVRAM............................................................................................8
2.2.4
Application Flash Memory........................................................................8
2.2.5
Serial and Parallel Ports...........................................................................9
2.2.6
IDE Port....................................................................................................9
2.2.7
PCMCIA Interface ....................................................................................9
2.2.8
PS/2 Mouse Port ......................................................................................9
POS Terminal Design Details
..............................................................................10
3.1
Intel Embedded Processor Module (EMBMOD133)............................................10
3.2
Intel 82371SB PCI ISA IDE Xcelerator................................................................10
3.3
PCMCIA Connector.............................................................................................10
3.3.1
PCMCIA Host Adapter ...........................................................................10
3.3.2
PCMCIA Voltage Control........................................................................11
3.4
Serial and Parallel Communications ...................................................................11
3.5
Application Flash.................................................................................................12
3.6
Video Controller...................................................................................................12
3.7
Power ..................................................................................................................12
Design Considerations
..........................................................................................13
Summary
......................................................................................................................13
Related Documents
.................................................................................................13
Contact Information
................................................................................................14
2.0
3.0
4.0
5.0
6.0
7.0
A
B
C
Bill of Materials
.........................................................................................................15
BIOS Checklist
..........................................................................................................19
Schematics
.................................................................................................................21
C.1
POS Terminal Reference Design Schematics ....................................................21