Motorola MVME2300 Series - Manual (Page 11)

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8259 Mode .................................................................................................2-90
Current Task Priority Level .......................................................................2-90
Architectural Notes ...........................................................................................2-91
CHAPTER 3 Falcon ECC Memory Controller Chip Set
Introduction ................................................................................................................3-1
Features ......................................................................................................................3-1
Block Diagrams .........................................................................................................3-2
Functional Description ...............................................................................................3-5
Bit Ordering Convention ....................................................................................3-5
Performance ........................................................................................................3-5
Four-beat Reads/Writes ...............................................................................3-5
Single-beat Reads/Writes ............................................................................3-6
DRAM Speeds .............................................................................................3-6
ROM/Flash Speeds ....................................................................................3-10
PowerPC 60x Bus Interface..............................................................................3-11
Responding to Address Transfers..............................................................3-11
Completing Data Transfers........................................................................3-11
Cache Coherency .......................................................................................3-11
Cache Coherency Restrictions...................................................................3-12
L2 Cache Support ......................................................................................3-12
ECC...................................................................................................................3-12
Cycle Types ...............................................................................................3-12
Error Reporting..........................................................................................3-13
Error Logging ............................................................................................3-14
DRAM Tester....................................................................................................3-14
ROM/Flash Interface ........................................................................................3-14
Refresh/Scrub....................................................................................................3-18
Blocks A and/or B Present, Blocks C and D Not Present .........................3-18
Blocks A and/or B Present, Blocks C and/or D Present ............................3-19
DRAM Arbitration............................................................................................3-20
Chip Defaults ....................................................................................................3-20
External Register Set ........................................................................................3-21
CSR Accesses ...................................................................................................3-21
Programming Model ................................................................................................3-21
CSR Architecture ..............................................................................................3-21
Register Summary.............................................................................................3-27
Detailed Register Bit Descriptions ...................................................................3-27
Vendor/Device Register ............................................................................3-30
Revision ID/ General Control Register .....................................................3-31