1.8. Product revisions

You can integrate any revision of ETM-R4 with your chosen revision of Cortex-R4 or Cortex-R4F. However, the most recent ETM-R4 revision is recommended for ease of integration and functional operation. This section describes the differences in functionality between product revisions:

r0p0-r1p0

Functional changes are:

r1p0-r2p0

Functional changes are:

  • The FIFO size changes from 72 bytes to 144 bytes. See Table 1.1.

  • The revision fields in the ID registers change, to indicate the r2p0 revision:

  • The number of valid bits in value of the FIFOFULL Level Register increases from 7 to 8, See FIFOFULL Level Register in the Embedded Trace Macrocell Architecture Specification.

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