Master Register Group Register Descriptions Registers associated with master interfaces. Offset: 0x2000 32-bit Master Register Descriptions Registers associated with the 32-bit AXI master interface. These registers are only active when the HPS2FPGA AXI Bridge is configured with a 32-bit FPGA AXI master interface. 128-bit Master Register Descriptions Registers associated with the 128-bit AXI master interface. These registers are only active when the HPS2FPGA AXI Bridge is configured with a 128-bit FPGA AXI master interface.