Intel Agilex® 7 F-Series and I-Series FPGA Memory Subsystem IP User Guide

ID 789389
Date 10/02/2023
Public

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Document Table of Contents

7.1.2.1. Device Feature Header

Table 28.  Device Feature Register Header
Bit Attribute Description
63:60 RO

Feature Type.

4'b0000 - Reserved, 4'b0001 - AFU, 4'b0010 - BBB, 4'b0011 - Private feature, 4'b0100 - FIU, 4'b0101 - v1 feature/interface.

59:52 RO DFH version. 0 = legacy, 1 = I/F based.
51:48 RO

If AFU - AFU minor revision # (user defined).

For others - Reserved.

47:41 Rsvd Reserved.
40 RO

End of List

1'b0 = There is another feature header beyond this (see "Next DFH Byte Offset").

1'b1 = This is the last feature header for this AFU.

39:16 RO

Next DFH Byte Offset.

Next DFH address = Current DFH address + Next DFH byte offset.

Used to determine Next DFH Address and as an indication for the maximum size of MMIO region occupied by this feature.

For last feature, this offset points to the beginning of the unallocated MMIO region, if any (or beyond the end of the MMIO space).

15:12 RO

If AFU - AFU major version # (user-defined).

For others, Feature Revision # (user-defined).

11:00 RO

Feature ID

If Type=AFU - contains interface version (such as CCI-P version #)

If Type = BBB - ID for BBB.