3.1 AMBA bus properties

The AMBA® protocols define multiple property types that indicate the capabilities of a device.

The following table lists the AHB5 properties of the AHB5 to AXI5 bridge.

Table 3-1 AHB5 properties

AHB5 property Value Comment
Extended_Memory_Types True Some extra hprot bits that can be translated, are used to generate AXI signals. See 3.3 Protection control translation.
Secure_Transfers True hnonsec is copied to axprot[1].
Endian False Pass-through. No built-in endian adaptation, it functions as a simple bridge.
Stable_Between_Clock False Not supported.
Exclusive_Transfers True Exclusive Transfers are translated.
Multi_Copy_Atomicity True Pass-through, no buffering. Early write response does not affect this capability.

The following table lists the AXI5 properties of the AHB5 to AXI5 bridge.

Table 3-2 AXI5 properties

AXI5 property Value Comment
Ordered_Write_Observation TRUE Improved support for the Producer/Consumer ordering model.
Multi_Copy_Atomicity TRUE Support for multi-copy atomicity.
Atomic_Transactions FALSE -
Check_Type FALSE -
Poison FALSE -
QoS_Accept FALSE AXI4 QoS is supported, but QoS_Accept signaling is not supported.
Trace_Signals FALSE -
Loopback_Signals FALSE -
Wakeup_Signals TRUE Generated from Q-Channel and AHB activity.
Untranslated_Transactions FALSE -
NSAccess_Identifiers TRUE Supported by using the hnsaid[3:0] sideband signals on the AHB5 slave interface.
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