Seagate Ultra 320 - Manual (Page 13)

Parallel SCSI Interface Product Manual, Rev. A xi
List of Figures
Figure 1. SCSI client-server model. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Figure 2. Voltage and current definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 3. LVD Signaling sense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 4. ST latching data vs. DT latching data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 5. ST synchronous transfer example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 6. DT synchronous transfer example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 7. Paced transfer example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 8. Example of a SCSI bus with paced transfers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 9. Use of P1 to establish data valid and data invalid states . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Figure 10. Phase sequences for physical reconnection and selection using attention
condition with information unit transfers disabled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Figure 11. Phase sequences for selection without using attention condition with information
unit transfers disabled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Figure 12. Phase sequences for physical reconnection or selection without using attention
condition/ with information unit transfers enabled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Figure 13. Phase sequences for selection with attention condition/physical reconnection
and information unit transfers enabled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Figure 14. SPI information unit sequence during initial connection . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Figure 15. SPI information unit sequence during data type transfers . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Figure 16. SPI information unit sequence during data stream type transfers . . . . . . . . . . . . . . . . . . . . 117
Figure 17. SPI information unit sequence during status transfers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Figure 18. Single command example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Figure 19. Disconnect example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Figure 20. Protection code generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157