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External Bus Interface (EBI)
MPC5566 Microcontroller Reference Manual, Rev. 2
12-78
Freescale Semiconductor
— Modified TSIZ[0:1] functionality to only indicate size of current transfer, not give information
on ensuing transfers that be part of the same atomic sequence
— The BL field of the base register has inverted logic from the MPC56x devices (0 = eight-beat
burst on the MPC5xxx, 1 = eight-beat burst on the MPC56x)
•
Removed reservation support on external bus
•
Removed address type (AT), write-protect (WP), and dual-mapping features because these
functions can be replicated by memory management unit (MMU) in e200z6 core
•
Removed support for 8-bit ports
•
Removed boot chip select operation: on-chip boot assist module (BAM) handles boot (and
configuration of EBI registers)
•
Open drain mode and pullup resistors no longer required for multi-master systems, extra cycle
needed to switch between masters
•
Modified arbitration protocol to require extra cycles when switching between masters
•
Added support for 32-bit coherent read and write non-chip select accesses in 16-bit data bus mode
•
Misaligned accesses are not supported
•
Calibration features implemented by four calibration chip selects
•
Removed support for three-master systems
•
Address decoding for external master accesses uses 4-bit code to determine internal slave instead
of straight address decode
Summary of Contents for MPC5566
Page 81: ...Introduction MPC5566 Microcontroller Reference Manual Rev 2 1 24 Freescale Semiconductor...
Page 135: ...Signal Description MPC5566 Microcontroller Reference Manual Rev 2 2 54 Freescale Semiconductor...
Page 189: ...Reset MPC5566 Microcontroller Reference Manual Rev 2 4 20 Freescale Semiconductor...
Page 603: ...Flash Memory MPC5566 Microcontroller Reference Manual Rev 2 13 38 Freescale Semiconductor...
Page 609: ...SRAM MPC5566 Microcontroller Reference Manual Rev 2 14 6 Freescale Semiconductor...
Page 1073: ...MPC5566 Microcontroller Reference Manual Rev 2 22 36 Freescale Semiconductor...
Page 1185: ...Nexus MPC5566 Microcontroller Reference Manual Rev 2 25 92 Freescale Semiconductor...