MAC7200 datasheet(21/976 Pages) FREESCALE

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MAC7200 Microcontroller Family Reference Manual, Rev. 2

Freescale Semiconductor

xxi

19.2.3.7

ECC Events on Reads ..............................................................................................394

19.2.3.7.1

Single Bit Errors ..................................................................................................394

19.2.3.7.2

Mulitiple Bit Errors .............................................................................................394

19.2.4

Initialization/Application Information.........................................................................395

19.3

Hamming Algorithm........................................................................................................395

19.3.1

Basic Algorithm...........................................................................................................395

19.3.1.1

The Hamming Rule..................................................................................................395

19.3.1.2

Creating A Hamming Codeword .............................................................................395

19.3.1.3

Hamming Parity Code Table ...................................................................................396

19.3.1.4

PRAM_CTL Implementation ..................................................................................397

Chapter 20

Boot Assist Module (BAM)

20.1

BAM Introduction............................................................................................................399

20.2

BAM Features..................................................................................................................400

20.3

BAM Protocol..................................................................................................................400

20.4

BAM External Pins ..........................................................................................................401

20.5

BAM Bus Aborts .............................................................................................................401

20.6

BAM Differences from MAC71xx ..................................................................................401

20.7

BAM Application Usage .................................................................................................401

Chapter 21

IPI Subsystem (IPSS)

21.1

Bus Abort handling ..........................................................................................................403

21.2

Peripheral Bus Peripheral Clock Frequencies .................................................................403

21.3

IPSS Differences from MAC71xx ...................................................................................403

Chapter 22

Dual-Output Voltage Regulator (VREG_HIP7A)

22.1

Introduction......................................................................................................................405

22.1.1

Overview......................................................................................................................405

22.1.2

Features........................................................................................................................405

22.1.3

Modes of Operation .....................................................................................................405

22.1.4

Block Diagram.............................................................................................................406

22.2

External Signal Description .............................................................................................407

22.2.1

Overview......................................................................................................................407

22.2.2

Detailed Signal Descriptions .......................................................................................408

22.2.2.1

VDDR - Regulator Power Input ..............................................................................408

22.2.2.2

VDDA, VSSA - Regulator Reference Supply .........................................................408

22.2.2.3

VDD15, VSS15 - Regulator Output1 (Core Logic) ................................................408

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