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3.4.10. Synchronization Period Register

The TRCSYNCPR characteristics are:


Specifies the period of synchronization of the trace streams. TRCSYNCPR defines a number of bytes of trace between requests for synchronization. This value is always a power of two.

Usage constraints

There are no usage constraints.


Available in all configurations.


See the register summary in Table 3.1 and Table 3.2.

Figure 3.11 shows the TRCSYNCPR bit assignments.

Figure 3.11. TRCSYNCPR bit assignments

Figure 3.11. TRCSYNCPR bit assignments

Table 3.21 shows the TRCSYNCPR bit assignments.

Table 3.21. TRCSYNCPR bit assignments

Defines the number of bytes of trace between synchronization requests as a total of the number of bytes generated by both the instruction and data streams. The number of bytes is 2N where N is the value of this field:

  • A value of zero disables these periodic synchronization requests, but does not disable other synchronization requests.

  • The minimum value that can be programmed, other than zero, is 8, providing a minimum synchronization period of 256 bytes.

  • The maximum value is 20, providing a maximum synchronization period of 220 bytes.

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