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1.8. Product revisions

This section describes the differences in functionality between product revisions of the MMU-500:

r0p0

First release.

r0p0 - r1p0

r1p0 delivers:

  • 16-deep TBU queue support.

  • 32-deep write buffer support.

  • Support for half-clock configuration. The TCU core runs at half the speed of the I/O clock, permitting the synchronous interfaces to run at a higher clock speed. The clock division is handled internally by the TCU.

r1p0 - r2p0

r2p0 delivers:

  • Ability to configure the StreamID width as 15 bits.

  • Support for up to 256 outstanding transactions for read and write channels on the TBU master interface.

r2p0 - r2p1

r2p1 delivers:

  • Support for normalization.

r2p1 - r2p2

r2p2 delivers:

  • No technical updates.

r2p2 - r2p4

r2p4 delivers:

  • Change to behavior to prevent cases where a Sync complete transaction fails to generate when a stalled transaction exists.

  • Change to behavior to prevent starvation of entries in the PTW queue when the queue is full.

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