The AXI LMB Bridge core implements a bridge from AMBA® AXI4 to the LMB.
The bridge is useful when accessing the MicroBlaze™ local memory from an AXI4 interconnect.
It is possible to achieve this with an AXI block RAM controller connected to one block RAM or URAM port, but in that case, MicroBlaze can only use one block RAM port, which reduces computational performance. With the AXI LMB Bridge, performance is maintained.
When using the AXI LMB Bridge in a triple modular redundant (TMR) subsystem, the optional pause functionality is provided to ensure that all outstanding AXI interface transactions are completed before a recovery reset is performed. For more information on TMR subsystems, see Triple Modular Redundancy (TMR) LogiCORE IP Product Guide (PG268).