CONTENTS
6.4.5
6.4.6
Programming Considerations ..................................................................................6-17
6.5
6.6
EXAMPLES ................................................................................................................. 6-18
6.6.1
CHAPTER 7
REFRESH CONTROL UNIT
7.1
7.2
7.3
7.4
REFRESH ADDRESSES............................................................................................... 7-4
7.5
7.6
7.7
7.7.1
7.7.2
7.7.2.1
Refresh Base Address Register ......................................................................7-8
7.7.2.2
Refresh Clock Interval Register .......................................................................7-8
7.7.2.3
Refresh Control Register .................................................................................7-9
7.7.3
Programming Example ...........................................................................................7-10
7.8
CHAPTER 8
INTERRUPT CONTROL UNIT
8.1
FUNCTIONAL OVERVIEW............................................................................................ 8-1
8.2
MASTER MODE ............................................................................................................ 8-2
8.2.1
8.2.1.1
Interrupt Masking .............................................................................................8-3
8.2.1.2
Interrupt Priority ...............................................................................................8-3
8.2.1.3
Interrupt Nesting ..............................................................................................8-4
8.3
8.3.1
8.3.2
Priority Resolution .....................................................................................................8-5
8.3.2.1
8.3.2.2
8.3.3
8.3.3.1
8.3.4
8.3.5
Polling .......................................................................................................................8-9
8.3.6
8.3.7
vi