Hard Processor System Technical Reference Manual: Agilex™ 5 SoCs

ID 814346
Date 7/19/2024
Public
Document Table of Contents

4.3.4.4.3. MMU-600 DTI Switch Hardware Configuration

These are the configuration settings for the DTI Switch instances in the SMMU. There are two instances. One resides in the PSS and the other in the APS. They have different configurations to handle routing of the traffic correctly. The PSS DTI Switch is a 4x1 configuration and the APS DTI Switch is a 3x1 configuration.

Table 91.  DTI Switch Configuration

Feature

Parameter name

Description

PSS

Instance

APS

Instance

Message data -width

DATA_WIDTH

Width, in bits, of the TDATA signals. Arm*

recommends setting this parameter to one of the following values:

  • 8
  • 32
  • 80
  • 160

160

160

Originating or destination node ID width

ID_WIDTH

Width, in bits, of the TID and TDEST signals.

3

3

Minimum decode value

DECMIN_SIn

Minimum manager interface TID value for transfers to and from subordinate interface n.

N=0 : 0

N=1 : 1

N=2 : 2

N=3 : 3

N=0 : 0

N=1 : 1

N=2 : 2

Maximum

decode value

DECMAX_SIn

Maximum manager interface TID value for transfers to and from subordinate interface n.

N=0 : 0

N=1 : 1

N=2 : 2

N=3: 3

N=0 : 0

N=1 : 1

N=2 : 5