Functional Overview

2.4Slave interface connection to the AHB

There are two separate AHB slave interfaces to connect the SMC to the AHB system bus:

•one gives access to the control registers

•one enables access to the memory.

This allows the interfaces to be on separate buses if required. Care must be taken in this case to ensure that the registers are not accessed during a memory access.

The memory interface has eight separate HSEL signals. These can be used to define the memory map as required. See Memory shadowing on page 2-54 for details of how the separate HSEL lines can be used.