Intel PXA27x Series, User Manual

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Intel
®
PXA27x Processor Developer’s Kit - User’s Guide 47
Programming Guide
3
The Intel
®
PXA270 Processor controls the entire Intel
®
PXA27x Processor Developer’s Kit, either
by including peripherals in the memory map or by using established control modules and I/O lines.
In all matters of programming detail, refer to the
Intel
®
PXA27x Processor Family Developer’s
Manual . For other applicable documents, see Table 1 .
This chapter covers the following topics:
•
Section 3.1 — Memory Map and Chip Selects
•
Section 3.2 — Platform-Level Registers
•
Section 3.3 — Processor Registers
•
Section 3.4 — Developer’s Kit Platform-Level Interrupts
•
Section 3.5 — General Purpose Input/Output (GPIO)
•
Section 3.6 — Programming Flash Memory and Logic Devices
Note: The following register values are close approximations. Some values may be altered for hardware
optimizations. See the low-level initialization code in your Board Support Package for the exact
values used.
3.1 Memory Map and Chip Selects
Table 13 describes the physical addresses and active-low chip selects for the Intel
®
PXA27x
Processor Card (processor card). For a complete listing of the Intel
®
PXA270 Processor memory
map, refer to the Memory Controller chapter in the Intel
®
PXA27x Processor Family Developer’s
Manual .
Note: There is no difference in the memory maps of the various styles of processor cards.
Table 13. Processor Physical Addresses and Chip Selects (Sheet 1 of 2)
Function
Chip
Select
Size
Base
Address
Ending
Address
Boot ROM flash memory nCS0 64 Mbytes 0x0000_0000 0x03FF_FFFF
Secondary flash memory nCS1 64 Mbytes 0x0400_0000 0x07FF_FFFF
Intel
®
PXA27x Processor Developer’s
Kit Main Board registers
nCS2 256 bytes 0x0800_0000 0x0800_00FF
reserved nCS2 — 0x0800_0100 0x09FF_FFFF
SRAM nCS2 2 Mbytes 0x0A00_0000 0x0A1F_FFFF
reserved nCS2 — 0x0A20_0000 0x0BFF_FFFF
reserved nCS3 64 Mbytes 0x0C00_0000 0x0FFF_FFFF
Ethernet controller nCS4 64 Mbytes 0x1000_0000 0x13FF_FFFF
Expansion board nCS5 64 Mbytes 0x1400_0000 0x17FF_FFFF