PrimeCell® Infrastructure AMBA™ 2 AHB™ to AMBA 3 AXI™ Bridges (BP136) Technical Overview 1.4. Signal descriptions

1.4. Signal descriptions

The AHB to AXI bridge signals are standard AMBA AXI and AHB signals. These are described in:

the AMBA AXI Protocol Specification
the AMBA Specification.

Note

User signals are provided as sideband signals to the standard AXI and AHB interfaces.

The following figures show the connections:

Figure 1.5 shows the ARM11 AHB-Lite master bus to AXI bridge signal connections
Figure 1.6 shows the AHB master bus to AXI bridge signal connections
Figure 1.7 shows the AHB slave bus to AXI bridge signal connections.

Note

In the three figures, DATA_MAX is the maximum high index of the data bus vectors, for example, 63 or 31, depending on the bus widths. A calculated parameter, STRB_MAX, controls the strobe bus width.

Figure 1.5. ARM11 AHB-Lite master bus to AXI bridge signal connections

Note

The value of N in the bus widths is not defined in the bridge.
The HWUSER, HRUSER, WUSER, RUSER, RDATA, WDATA, HRDATA, and HWDATA signals all bypass the bridge.

Figure 1.6. AHB master bus to AXI bridge signal connections

Note

The value of N in the bus widths is not defined in the bridge.
The HWUSER, HRUSER, WUSER, RUSER, RDATA, WDATA, HRDATA, and HWDATA signals all bypass the bridge.

Figure 1.7. AHB slave bus to AXI bridge signal connections

Note

The value of N in the bus widths is not defined in the bridge.
The HWUSER, HRUSER, WUSER, RUSER, RDATA, WDATA, HRDATA, and HWDATA signals all bypass the bridge.

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