5 Access Port (MEM-AP)

This section describes the access port used to access the device memory. When access to SW-DP is enabled, the debugger can access the MEM-AP. When the device security bit is cleared, two MEM-AP (AP0 and AP1) are accessible. The second AP may be used for non-intrusive debugging.

Even if it is not mandatory for this device, before accessing a MEM-AP, the debugger can wait for the CSW.DeviceEn bit to be set. (Refer to ARM IHI 0031). A CoreSight ROM table is attached to each AP, describing the available debug components. Alternatively, the debugger can rely on the DSU device ID.