Open Access
5-1
ARM Development Board (ARM7TDMI Version)
Hardware Reference Guide
ARM DUI 0017C
The ARM Development Board implements an APB with full 32-bit address and data buses.
In a typical system, these buses may well be narrower; the APB slaves only use 16 data lines
and nine address lines. Full 32-bit support is provided for flexibility when expanding the APB.
This chapter describes how to expand and monitor the APB.
5.1 APB Expansion Interface 5-2
5.2 Building an APB Slave Expansion Board 5-5
5.3 APB Timing on the ARM Development Board 5-6
Expanding and Monitoring
the APB
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