Fujitsu MHX2300BT Product Manual page 18

Contents
CHAPTER 6 Operations ................................................................................. 6-1
6.1 Reset and Diagnosis ..........................................................................................6-2
6.1.1
6.1.2
6.1.2.1 Software settings preservation....................................................6-5
6.1.2.2 COMRESET preservation requirements ....................................6-5
6.1.3
6.2 Power Save ........................................................................................................6-8
6.2.1
6.2.2
6.3 Power Save Controlled by Interface Power Management (IPM) ....................6-11
6.3.1
6.4 Read-ahead Cache ...........................................................................................6-13
6.4.1
6.4.2
6.4.3
6.4.3.1 Miss-hit.....................................................................................6-16
6.4.3.2 Sequential hit............................................................................6-17
6.4.3.3 Full hit ......................................................................................6-17
6.4.3.4 Partial hit ..................................................................................6-19
6.5 Write Cache .....................................................................................................6-20
6.5.1
Glossary ........................................................................................................... GL-1
Acronyms and Abbreviations .........................................................................AB-1
Index ................................................................................................................. IN-1
xiv
Response to power-on ...........................................................................6-2
Response to COMRESET .....................................................................6-4
Response to a software reset .................................................................6-7
Power save mode...................................................................................6-8
Power commands ................................................................................6-10
Power save mode of the interface .......................................................6-11
Data buffer structure............................................................................6-13
Caching operation ...............................................................................6-14
Using the read segment buffer ............................................................6-16
Cache operation...................................................................................6-20
C141-E254