Stream IDs

Versal ACAP Technical Reference Manual (AM011)

Document ID
AM011
Release Date
2022-04-26
Revision
1.4 English

The SMMU uses a 15-bit stream ID to perform address translations. This information is part of a transaction and indicates which master originated the request.

Stream ID bits [9:0] are the same as the system management ID (SMID) bits (see APU SMID [3:0]). Stream bits [14:10] are assigned by the TBU that the transaction passes through. There are seven TBUs:

  • TBU 0 appends 000_00b
  • TBU 1 appends 000_01b
  • Etc.
  • TBU 6 appends 001_10b