Table Of Contents - Fujitsu MAN3184 SERIES Specifications

CHAPTER 1 SCSI BUS ...................................................................................................................... 1 - 1
1.1 System Configuration .................................................................................................................. 1 - 1
1.2 Interface Signal Definition........................................................................................................... 1 - 3
1.3 Physical Requirements................................................................................................................. 1 - 7
1.3.1 Interface connector ...................................................................................................................... 1 - 8
1.3.2 Interface cable............................................................................................................................ 1 - 15
1.4 Electrical Requirements............................................................................................................. 1 - 17
1.4.1 Single-Ended type...................................................................................................................... 1 - 17
1.4.2 Low-Voltage Differential type................................................................................................... 1 - 20
1.4.3 Internal terminal resistor and power supply for terminating resistor ......................................... 1 - 23
1.4.4 Usage in 8-bit/16-bit transfer mode ........................................................................................... 1 - 25
1.4.5 Signal driving conditions ........................................................................................................... 1 - 26
1.5 Timing Rule ............................................................................................................................... 1 - 28
1.5.1 Timing value.............................................................................................................................. 1 - 28
1.5.2 Measurement point .................................................................................................................... 1 - 35
1.6 Bus Phases ................................................................................................................................. 1 - 39
1.6.1 BUS FREE phase....................................................................................................................... 1 - 40
1.6.2 ARBITRATION phase .............................................................................................................. 1 - 41
1.6.3 SELECTION phase ................................................................................................................... 1 - 44
1.6.4 RESELECTION phase .............................................................................................................. 1 - 48
1.6.5 INFORMATION TRANSFER phases....................................................................................... 1 - 51
1.6.5.1 Asynchronous transfer mode ..................................................................................................... 1 - 52
1.6.5.2 Synchronous mode..................................................................................................................... 1 - 55
1.6.5.3 Wide mode transfer (16-bit SCSI) ............................................................................................. 1 - 65
1.6.6 COMMAND phase.................................................................................................................... 1 - 65
1.6.7 DATA phase .............................................................................................................................. 1 - 65
1.6.8 STATUS phase .......................................................................................................................... 1 - 68
1.6.9 MESSAGE phase....................................................................................................................... 1 - 68
1.6.10 Signal requirements concerning transition between bus phases................................................. 1 - 69
1.6.11 Time monitoring feature ............................................................................................................ 1 - 71
1.7 Bus Conditions .......................................................................................................................... 1 - 72
1.7.1 ATTENTION condition ............................................................................................................ 1 - 72
1.7.2 RESET condition....................................................................................................................... 1 - 75
1.8 Bus Phase Sequence .................................................................................................................. 1 - 76
CONTENTS
C141-E123-01EN
page
ix