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Point of Sale Terminal Design Guide
Application Note
13
4.0
Design Considerations
There should be decoupling capacitors for every schematic page and one bulk capacitor for the
entire design. This provides a short between power and ground for high frequency signals and to
reduce inductance.
If a part is to be removed from the design, the outputs can be left unconnected but the inputs should
be pulled either high or low. Since the TFT/DSTN display is not implemented for this design,
connect the video controller power pins to V
CC
.
5.0
Summary
This design was created to shorten the development cycle for POS terminal designs. It is intended
to be implemented on a single board for reduced cost. Peripherals are designed in a modular
fashion and can be easily removed for specific applications.
Caution:
The design has
not
been implemented in hardware. This document is for reference only. Customers
are responsible for validating designs created using the information included in this document.
6.0
Related Documents
Copies of Intel documents that have an order number referenced in this document (see Table 1)
may be downloaded from the Intel web site at http://www.intel.com. To order printed copies, call
1-800-548-4725.
Table 2 lists documents available from other vendors.
Table 1. Intel Documents
Document Name
Order Number
Intel Embedded Processor Module datasheet
273105
Intel Embedded Processor Module Design Guide
273120
Intel Embedded Processor Module (EMBMOD133) Thermal Design Guide
273143
Pentium
Processor datasheet
241997
Pentium
Processor Family Developer’s Manual
241428
Intel Architecture Software Developer’s Manual
(Vols.
1, 2 and 3)
243190, 243191 and
243192
Intel 430HX PCIset 82439HX System Controller (TXC)
datasheet
290551
Intel 430HX PCIset 82439HX System Controller (TXC)
Timing Specification
272945
Intel 430HX PCIset Design Guide
297467
82371FB (PIIX) and 82371SB (PIIX3) PCI-TO-ISA/IDE Xcelerator
datasheet
290550
82371SB PCI-TO-ISA/IDE Xcelerator (PIIX3) Timing Specification
272963
The Advantages of Using the 82371SB PCI-TO-ISA/IDE Xcelerator (PIIX3) with
the Intel 430HX PCIset in Embedded Designs
273009
Intel Word-Wide FlashFile Memory 28F320S5
datasheet
290609