Product manual

Figure 25. ST31250WC/DC and ST32550WC/DC configuration select header .......................... 57
Figure 26. ST31250N/ND and ST32550N/ND physical interface ................................................ 68
Figure 27. ST31250W/WD and ST32550W/WD physical interface ............................................. 69
Figure 28. ST31250WC/DC and ST32550WC/DC physical interface ......................................... 69
Figure 29. Single-ended transmitters and receivers.................................................................... 73
Figure 30. Typical differential I/O line transmitter/receiver and terminators................................. 74
Figure 31. Non-shielded SCSI device connector ........................................................................ 76
Figure 32. Wide SCSI device connector ..................................................................................... 79
Figure 33. Non-shielded, 80-pin I/O and DC power single-connector attachment (SCA) ............ 82
Tables
Table 1. SCSI interface messages supported ......................................................................... 59
Table 2. Supported commands............................................................................................... 60
Table 3. Barracuda 2LP family drive inquiry data–ASA I ......................................................... 62
Table 4. Barracuda 2LP family drive inquiry data–ASA II ........................................................ 62
Table 5. Mode sense data, ST31250 default values–ASA I (SCSI-1 implementation) ............. 63
Table 6. Mode sense data, ST32550 default values–ASA I (SCSI-1 implementation) ............. 63
Table 7. Mode sense data, ST31250 default values–ASA I (SCSI-2 implementation) ............. 64
Table 8. Mode sense data, ST32550 default values–ASA I (SCS-2 implementation) .............. 64
Table 9. Mode sense data, ST31250 default values–ASA II (SCSI-2 implementation) ............ 65
Table 10. Mode sense data, ST32550 default values–ASA II (SCSI-2 implementation) ............ 65
Table 11. SCSI bus conditions and other miscellaneous features ............................................. 66
Table 12. Synchronous data transfer periods ............................................................................ 67
Table 13. Mating connector parts .............................................................................................. 68
Table 14. Single-ended cable pin assignments for ST31250N and ST32550N drives ............... 77
Table 15. Differential cable pin assignments for ST31250ND and ST32550ND drives .............. 78
Table 16. Single-ended contact assignments for ST31250W and ST32550W drives ................ 80
Table 17. Differential contact assignments for ST31250WD and ST32550WD drives ............... 81
Table 18. SCA contact assignments for ST31250WC and ST32550WC drives......................... 83
Table 19. SCA contact assignments for ST31250DC and ST32550DC drives .......................... 84
Table 20. Disc drive SCSI timing ............................................................................................... 85
viii Barracuda 2LP Product Manual, Rev. D