2.1.7 Distributor configuration

You can configure several options that relate to the operation of the Distributor block.

Table 2-6 Configurable options for the Distributor

Feature Range of options
Number of chips 1-16
Affinity level that is used for chip selection 2, 3
Affinity0 width 0-4
Affinity1 width 0-8
Affinity2 width 0-8
Affinity3 width 0-8
LPI support True, False
LPI cache size (entries / 2) 8, 16, 32, 64, 128, 256, 512
Number of ITS

0-16

Number of Redistributors on chip

1-64

Number of message-based SPIs permitted in system

32-960, in blocks of 32

Number of SPI wires on chip for wire-based SPIs

0-960

Security support Options include:
  • Security support programmable. Resets to support security.
  • Security support always present.
  • Security support not present.

Note:

See Security model in the Arm® GICv3 and GICv4 Software Overview for information about the implications of setting Security support to not present.

For more information, see the Arm®CoreLink™ GIC‑600 Generic Interrupt Controller Configuration and Integration Manual and Arm® GICv3 and GICv4 Software Overview.

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