A: can it be embedded and traced?

M: Yes, chip tracing technology is often embedded directly into the microchip itself. This allows the chip to be traced without needing any externaldebugging hardware.

There are two main approaches used for embedded tracing:

1. Embedded Trace Macrocells: These are small traces units physically embedded into the chip during fabrication. They can monitor signals and events on the chip in real-time without interfering with the chip's normal operations. ARM processors commonly use embedded trace macrocells from the manufacturer.

2. Logic Analyzer Cores: These are programmable logic cores integrated into FPGAs (Field Programmable Gate Arrays) or other programmable chips. They act like a miniature logic analyzer that can probe internal nodes and trace the chip's behavior. Xilinx FPGAs contain embedded logic analyzer cores for this.

In both cases, the trace data is buffered onboard the chip and streamed out via dedicated I/O pins or ports. Debugging tools then collect and analyze this trace stream to gain insight into the chip. The embedded approach provides a cost-effective way to trace chips with minimal external hardware needed. It's commonly used for testing prototypes and debugging pre-production chips.

Let me know if you need any clarification or have additional questions! I'm happy to explain further how embedded tracing techniques work.