Embedded Pentium® Processor-Based POS Terminal Sample Design
5.0POS Terminal Design Overview
Figure 4 is the block diagram for the POS terminal design.
Figure 4. POS Terminal Baseboard Block Diagram
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Processor Assembly |
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72-pin DIMM |
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DRAM Bus |
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PCI |
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PCI |
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Connector |
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Connector |
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Clock |
PCI |
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PCMCIA |
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Bus |
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Controller |
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PCI1221 |
USB Interface |
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69000 HiQ |
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AC ’97 Audio |
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Video Accelerator |
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PIIX4 |
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ES1371 |
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with integrated |
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4-32 Mbyte |
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IDE Interface |
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memory |
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Application |
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Flash |
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ISA |
AD725 |
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AD1819 |
28Fxx0J5 |
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256 K x 8 |
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Connector |
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Flash |
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ISA Bus |
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National |
BIOS |
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28F002BC |
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Super I/O* |
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FDC37C669 |
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(for additional |
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PS/2 Mouse |
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Ports) |
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PS/2 Keyboard |
National |
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Super I/O* |
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IEEE 1284 Parallel Port |
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FDC37B78X |
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Floppy Drive |
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COM1 |
COM2 |
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Touch- |
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IR |
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screen |
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5.1Core Components
As shown in Figure 4, the core components of this reference design are:
•Intel embedded processor assembly
•82371AB PCI-TO-ISA/IDE Xcelerator (PIIX4)
—IDE connector
—Universal Serial Bus host controller
•Cache
•Chips and Technologies 69000 HiQVideo* Accelerator with Integrated Memory
•AC ’97 Audio Solution
—Ensoniq AudioPCI* ES1371
—AD1819 SoundPort* Codec
•SMSC FDC37B78x Ultra I/O
Application Note |
15 |