Multi level loopback to enable automated testing of standalone connectivity controller

A system comprising:

• a memory storing instructions;
• and
• a processor, coupled with the memory and configured to execute the instructions, the instructions when executed causing the processor to:
• set a configuration register disposed in a connectivity controller to a first value;
• cause a first data stored in a first section of a memory associated with the connectivity controller to be forwarded and pass through at least a first component of the connectivity controller and a second component of the connectivity controller, in sequence, in response to the first value;
• return data received by the second component, via the first component, for storage in a second section of the memory;
• compare the first data to the data returned and stored in the second section of the memory;
• and
• verify the test if the first data matches the return data.

A non-transitory computer readable medium comprising stored instructions, which when executed by a processor, cause the processor to:

• set a configuration register disposed in a USB4 controller to a first value;
• cause a first data stored in a first section of a memory associated with the USB4 controller to be forwarded and pass through at least a first component of the USB4 controller and a second component of the USB4 controller, in sequence, in response to the first value;
• return data received by the second component, via the first component, for storage in a second section of the memory;
• compare the first data to the data returned and stored in the second section of the memory;
• and
• verify the test if the first data matches the return data.