8259 Mode.................................................................................................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
Performance ........................................................................................................3-5
DRAM Speeds .............................................................................................3-6
ROM/Flash Speeds ....................................................................................3-10
Cache Coherency .......................................................................................3-11
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
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
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