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15
Bus Monitor Unit (BMU)
This document describes the functionality of the Bus Monitor Unit (BMU). The BMU is
primarily intended to be used in High Integrity Safety Applications. It provides the base
hardware mechanisms to simplify the monitoring functions that safety applications need
to implement. The core functionality of the BMU consists of logging the peripheral bus
write activity. The logged information is stored in a local buffer managed as a cyclic
buffer. In non-safety applications the BMU can be used as a PCP data memory
extension. The BMU operates as a standard FPI bus slave peripheral and is fully
controlled through a set of configuration and control registers. Additionally a dedicated
slave interface enables burst accesses to the logged information.
This chapter is structured as follows:
•
BMU Features (see
•
An operational overview of the BMU Module (see
•
Functional description of the BMU Module (see
•
Interfaces of the BMU Module (see
•
Description of the BMU Module registers (see
User's Manual
BMU, V2.6
Section
15.2)
Section
15-1
Bus Monitor Unit (BMU)
Section
15.3)
Section
15.4)
15.5)
Section
15.6)
TC1728
V1.0, 2011-12
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