A.8.1 Configuration signals

The following table shows the configuration signals that are common to the ACE and CHI interfaces.

Table A-7 ACE or CHI configuration inputs

Signal Type Description
BROADCASTINNER Input
Enable broadcasting of Inner Shareable transactions:
0Inner Shareable transactions are not broadcasted externally.
1Inner Shareable transactions are broadcasted externally.
If BROADCASTINNER is tied HIGH, BROADCASTOUTER must also be tied HIGH.
This signal is only sampled during powerup reset of the processor.
BROADCASTOUTER Input
Enable broadcasting of Outer Shareable transactions:
0Outer Shareable transactions are not broadcasted externally.
1Outer Shareable transactions are broadcasted externally.
This signal is only sampled during powerup reset of the processor.
BROADCASTCACHEMAINT Input
Enable broadcasting of cache maintenance operations to downstream caches:
0Cache maintenance operations are not broadcasted to downstream caches.
1Cache maintenance operations are broadcasted to downstream caches.
This signal is only sampled during powerup reset of the processor.
SYSBARDISABLE Input
Disable broadcasting of barriers on the system bus:
0Barriers are broadcast on the system bus.
1Barriers are not broadcast on the system bus.
For AXI3 compatibility in ACE interface configurations, SYSBARDISABLE must be tied HIGH and the following signals LOW:
  • BROADCASTCACHEMAINT.
  • BROADCASTINNER.
  • BROADCASTOUTER.
This signal is only sampled during powerup reset of the processor.
Related information
7.7.2 Interface modes
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