Introduction
MPC5565 Microcontroller Reference Manual, Rev. 1.0
1-4
Freescale Semiconductor
– Supports tag and data parity
— Vectored interrupt support
— Interrupt latency is less than 70 ns @132 MHz (measured from interrupt request to execution
of first instruction of interrupt exception handler)
— Reservation instructions for implementing read-modify-write constructs
(internal SRAM and flash)
— Signal processing engine (SPE) auxiliary processing unit (APU) operating on 64-bit GPRs
— Floating point
– IEEE
®
754 compatible with software wrapper
– Single precision in hardware, double precision with software library
– Conversion instructions between single precision floating point and fixed point
— Long cycle time instructions, except for guarded loads, do not increase interrupt latency in the
MPC5565; to reduce latency, long cycle time instructions are aborted upon interrupt requests
— Extensive system development support through Nexus debug module
•
System bus crossbar switch (XBAR)
— Three master ports, five slave ports.
— 32-bit address bus, 64-bit data bus
— Simultaneous accesses from different masters to different slaves (there is no clock penalty
when a parked master accesses a slave)
•
Enhanced direct memory access (eDMA) controller
— 32 channels support independent 8-, 16-, 32-bit single value or block transfers
— Supports variable sized queues and circular queues
— Source and destination address registers are independently configured to post-increment or
remain constant
— Each transfer is initiated by a peripheral, CPU, or eDMA channel request
— Each eDMA channel can optionally send an interrupt request to the CPU on completion of a
single value or block transfer
•
Interrupt controller (INTC)
— 231 interrupt request registers
1
– 208 peripheral interrupt requests
– Eight software settable sources
– 16 reserved
— Unique 9-bit vector per interrupt source
— 16 priority levels with fixed hardware arbitration within priority levels for each interrupt source
— Priority elevation for shared resources
1. Although this device has a maximum of 231interrupts, the logic requires that the total number of interrupts be divisible by four.
Therefore, the total number of interrupts specified for this device is 232.
Summary of Contents for MPC5565
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Page 559: ...SRAM MPC5565 Microcontroller Reference Manual Rev 1 0 14 6 Freescale Semiconductor...
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