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Intel

StrongARM

SA-1110 Microprocessor Development Board

User’s Guide

4-1

Hardware Considerations

This chapter provides an in-depth description on the following topics:

• Xbus expansion headers

• Storage

• GPIOs

• Registers

• Displays

• Buses and Ports

• Power

• Audio

4.1 Xbus Expansion Headers

The general-purpose expansion bus headers provided on the SA-1110 Development Board are

referred to as the Xbus headers (not to be confused with ISA Xbus). All SA-1110 address, data and

memory interface signals are buffered before driving the Xbus headers.

The Xbus headers allow interfacing to the SA-1111 microprocessor companion chip and the SA-

1111 Development Module as well as a third-party graphics chip daughter board.

These general-purpose expansion headers allow the use of the SA-1110 Development Board as a

general-purpose hardware and software development platform for battery-powered and tethered

applications. For more information about Xbus headers, see the Intel

StrongARM

SA-1111

Development Module User’s Guide.

4.2 Storage

This section describes the memory map, the SDRAM interface, the expansion flash memory, the

interface for the expansion SDRAM, and compact flash issues.

4.2.1 Intel

StrongARM

SA-1110 Development Board Memory

Map

Table 5-1 shows the address ranges for the standard SA-1110 Development Board Xbus devices as

well as flash memory, SDRAM, and system control and system debug registers. The address range

field indicates the entire decoded range while the size:width field indicates the actual resource size

and width within the decoded range. All decoded resources are address wrapped within their

address range.

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 89 90

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