Seagate BARRACUDA 2LP - Page 10

11.5 Synchronous data transfer ........................................................................................ 67
11.5.1 Synchronous data transfer periods supported .............................................. 67
11.5.2 REQ/ACK offset............................................................................................ 67
11.6 DC cable and connector ........................................................................................... 68
11.7 SCSI physical interface ............................................................................................. 68
11.7.1 Physical characteristics ................................................................................ 70
11.7.2 Connector requirements ............................................................................... 71
11.7.3 Electrical description ..................................................................................... 72
11.8 SCSI non-wide physical interface ............................................................................. 76
11.9 SCSI wide physical interface..................................................................................... 79
11.10 SCSI single-connector attachment (SCA) physical interface..................................... 82
Index .......................................................................................................................................... 87
Figures
Figure 1. Barracuda 2LP disc drive (ST32550N drive shown) .................................................. 1
Figure 2. Barracuda 2LP disc drive (exploded view)................................................................. 5
Figure 3. ASA I OEM thermal calibration ................................................................................. 13
Figure 4. Synchronized drive interconnect diagram .................................................................. 17
Figure 5. Synchronized reference signal characteristics ........................................................... 18
Figure 6. Air flow pattern (ST32550N drive shown) .................................................................. 23
Figure 7. WYGX temperature measurement locations.............................................................. 24
Figure 8. HYHX temperature measurement locations............................................................... 25
Figure 9. JYHX temperature measurement locations ............................................................... 26
Figure 10. KYHX temperature measurement locations ............................................................... 27
Figure 11. ZYHX temperature measurement locations ............................................................... 28
Figure 12. PYJX temperature measurement locations................................................................ 29
Figure 13. Temperature measurement location (ST32550N shown)........................................... 29
Figure 14. Barracuda 2LP drives typical +12V current profile ..................................................... 35
Figure 15. ST31250N/ND and ST32550N/ND mounting configuration dimensions..................... 39
Figure 16. ST31250W/WD and ST32550W/WD mounting configuration dimensions.................. 40
Figure 17. ST31250WC/DC and ST32550WC/DC mounting configuration dimensions .............. 41
Figure 18. Recommended mounting........................................................................................... 42
Figure 19. ST31250N/ND and ST32550N/ND jumper connectors .............................................. 47
Figure 20. ST31250W/WD and ST32550W/WD jumper connectors ........................................... 50
Figure 21. ST31250WC/DC and ST32550WC/DC jumper connectors ....................................... 53
Figure 22. SCSI reference index signal driver/receiver combination ........................................... 55
Figure 23. ST31250N/ND and ST32550N/ND configuration select header ................................. 56
Figure 24. ST31250W/WD and ST32550W/WD configuration select header.............................. 56
Barracuda 2LP Product Manual, Rev. D vii
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