The local memory unit is a resource attached to the System Resource Interconnect (SRI) that provides SRAM for general purpose use. A product may contain multiple instances of the LMU, and each instance has its own set of configuration registers.

Data stored in the SRAM is protected by error-correcting codes (ECC). Master access to areas of each LMU can be permitted or denied by configuring up to 16 address ranges using an Access Protection Unit (APU) in the LMU. The ranges can be sized in 64-byte increments and the master agent functions can be granted access for read and write independently. A master agent function is identified by its number (ID), Protection Register Set (PRS) and Virtual Machine (VM) identifier.

Note: Please refer to the system address map for the availability of LMU instances in a specific product.