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The FFSR indicates the current status of formatter and flush features available in the TPIU.
The FFSR register characteristics are:
The following figure shows the bit assignments.
The following table shows the bit assignments.
Table 9-468 FFSR register bit assignments
Read-As-Zero, Writes Ignored.
Indicates whether the tracectl pin is available for use, based on the tie-off value of tpctl_valid.
The formatter has received a stop request and all trace data and post-amble is sent. Any further trace on the ATB interface is dropped and atready_s is asserted.
Indicates whether a flush is in progress. It is set when the TPIU sends a flush request on its ATB slave interface. The bit remains set until the ATB flush is complete and the last byte of flush data, including the flush ID payload if FFCR.EmbedFlush is set, has been output on the trace port.