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MC33904 Datasheet(PDF) 7 Page - Freescale Semiconductor, Inc

Part # MC33904
Description  SBC Gen2 with CAN High Speed and LIN Interface
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MC33904 Datasheet(HTML) 7 Page - Freescale Semiconductor, Inc

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Freescale Semiconductor
vii
3.3.1.2 Saving and Restoring the EMAC Programming Model . . . . . . . . . . . . 3-11
3.3.1.3 MULS/MULU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
3.3.1.4 Scale Factor in MAC or MSAC Instructions . . . . . . . . . . . . . . . . . . . . 3-12
3.3.2 EMAC Instruction Set Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
3.3.3 EMAC Instruction Execution Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
3.3.4 Data Representation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
3.3.5 MAC Opcodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Chapter 4
Cache
4.1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.2
Memory Map/Register Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.2.1 Cache Control Register (CACR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4.2.2 Access Control Registers (ACR0, ACR1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4.3
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4.3.1 Interaction with Other Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4.3.2 Memory Reference Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4.3.3 Cache Coherency and Invalidation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4.3.4 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4.3.5 Cache Miss Fetch Algorithm/Line Fills . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Chapter 5
Static RAM (SRAM)
5.1
SRAM Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.2
SRAM Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.3
SRAM Programming Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.3.1 SRAM Base Address Register (RAMBAR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.3.2 SRAM Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.3.3 SRAM Initialization Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.3.4 Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Chapter 6
ColdFire Flash Module (CFM)
6.1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6.2
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6.3
Memory Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
6.3.1 CFM Configuration Field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
6.3.2 Flash Base Address Register (FLASHBAR) . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
6.3.3 CFM Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
6.3.4 Register Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
6.3.4.1 CFM Configuration Register (CFMCR) . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
6.3.4.2 CFM Clock Divider Register (CFMCLKD) . . . . . . . . . . . . . . . . . . . . . . . 6-9
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3


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