Mpc5Xx System Interface (Usiu); Burst Buffer Controller (Bbc) Module - Motorola MPC533 Reference Manual

Key Features
• Precise exception model
• 64-bit floating point unit (FPU)
• Code compression supported on MPC534
— Reduces usage of internal/external Flash memory (up to 50% for code)
— The code compression feature is optimized for automotive (non-cached)
applications
• Extensive system development support
— On-chip watchpoints and breakpoints
— Program flow tracking
1.3.1.2

MPC5xx System Interface (USIU)

• System configuration and protection features:
— Periodic-interrupt timer
— Bus monitor
— Software watchdog timer
— Real-time clock (RTC)
— PPC decrementer
— Time base
• Clock synthesizer
• Power management
• Reset controller
• External bus interface that tolerates 5-V inputs, provides 2.6-V outputs, and supports
multiple-master designs
• Enhanced interrupt controller that supports up to eight external and 40 internal
interrupts, simplifies the interrupt structure, and decreases interrupt processing time
• USIU supports dual mapping to map part of one internal/external memory to another
external memory
• External bus, supporting non-wraparound burst for instruction fetches, with up to 8
instructions per memory cycle
1.3.1.3

Burst Buffer Controller (BBC) Module

• Support for enhanced interrupt controller (EIC)
• Support for enhanced exception table relocation feature
• Branch target buffer
• Contains 2 Kbytes of decompression RAM (DECRAM) for code compression. This
RAM may also be used as general-purpose RAM when code compression feature
not used.
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MPC533 Reference Manual MOTOROLA