ARM Cortex R4F - Manual (Page 356)

Integration Test Registers
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13.1 About Integration Test Registers
The processor contains Integration Test Registers that enable you to verify integration of the
design and enable topology detection of the design using debug tools. The Integration Mode
Control Register (ITCTRL), which is also described in this chapter, controls the use of the
Integration Test Registers.
When programming the Integration Test Registers you must enable all the changes at the same
time.
For more information about the Integration Test Registers and the Integration Mode Control
Register see the ARM Architecture Reference Manual.