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4.24. CompactFlash interface

The CompactFlash interface is a custom AMBA AHB compliant peripheral developed by ARM Limited.

The module is an AMBA slave module and connects to the Advanced High-performance Bus (AHB). The interface supports:

  • True IDE Mode (16-bit)

  • I/O Mode (data and task file register read and write access only).

Table 4.93. CompactFlash implementation
Location Southbridge
Memory base address
  • Access: 0x18000000

  • Access: 0x18000100 (alternative status and control registers)

  • Control: 0x18000300

  • Expansion: 0x18000304

Interrupt 59
Release versionCustom logic
Platform Library supportYes
Reference documentationCF+ and CompactFlash Specification Revision 4.1

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