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Table of Contents Intel® Server Platform SR6850HW4 TPS
Revision 1.0
Intel order number D23151-001
vi
7.2.1 SCSI Buses ...........................................................................................................73
7.2.2 SCSI Drive Power Control .....................................................................................73
7.2.3 SCSI Enclosure Management ...............................................................................75
7.2.4 Server Management Interface ...............................................................................76
7.2.5 Resets....................................................................................................................77
7.2.6 Connector Interlocks..............................................................................................77
7.2.7 Clock Generation...................................................................................................77
7.2.8 Programmed Devices ............................................................................................78
7.3 Signal Descriptions................................................................................................78
7.3.1 Power from the Power Distribution Board..............................................................79
7.3.2 Front Panel Power Connector ...............................................................................79
7.3.3 Front Panel I/O Board Ribbon Cable Connector ...................................................79
7.3.4 LVD SCSI 68-pin Connector..................................................................................80
7.3.5 SCA2 80-pin Drive Connectors..............................................................................81
7.3.6 Fans.......................................................................................................................82
7.3.7 Internal Logic Signals ............................................................................................82
7.4 Electrical, Environmental, and Mechanical Specifications.....................................83
7.4.1 Electrical Specifications.........................................................................................83
8. Front Panel I/O and Control Boards .................................................................................85
8.1 Introduction............................................................................................................85
8.1.1 Block Diagram .......................................................................................................85
8.1.2 Architectural Overview...........................................................................................86
8.1.3 Component Location..............................................................................................87
8.2 Functional Architecture..........................................................................................88
8.2.1 VGA .......................................................................................................................88
8.2.2 USB .......................................................................................................................88
8.2.3 NMI Button.............................................................................................................88
8.3 Signal Descriptions................................................................................................89
8.3.1 USB Connector......................................................................................................89
8.3.2 Front Panel VGA Connector ..................................................................................90
8.4 Electrical, Environmental, and Mechanical Specifications.....................................90
8.4.1 Electrical Specifications.........................................................................................90
8.4.2 Connector Specifications.......................................................................................91
8.4.3 Cooling Requirements ...........................................................................................91
8.5 Front Panel Control Module...................................................................................92