Sharp Actius PC-GP20 User's Guide Page 25

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Intel
®
StrongARM
®
SA-1110 Microprocessor Development Board
User’s Guide
3-1
Theory of Operation
3
The SA-1110 Development Platform is designed for the hardware and software development of
hand-held, palm-top and tethered applications. The SA-1110 Development Platform provides all
the system components necessary for a Windows* CE or other OS hand-held PC system or a sub-
notebook system development platform including three independent video heads, high-quality
stereo sound and radio interface support.
3.1 System Partitioning
The SA-1110 Development Platform’s system partitioning is designed so that the SA-1110
Development Board functions as a standalone palm-size PC reference design. The SA-1110
Development Board’s mechanical design supports simple system packaging using sheet Lexan*,
screws and spacers to integrate the LCD, optional frontlight, touch screen and batteries.
The block diagram shown in Figure 3-1 illustrates the modularity and flexibility of the design. Two
140-pin fully buffered daughter board expansion headers (J2) are supported; one on each side of
the SA-1110 Development Board. Either side of J2 can be used to support the SA-1111
Development Module or the graphics accelerator module.
The functionality of the dual interconnects is identical. The rationale for two interconnects is as
follows: When the cards are connected in an extended fashion (“Z” shaped), full electronic probing
is possible. When connected in a compact format (“U” shaped), tight packaging is facilitated.
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