LSI U40HVD 1.3.3Ultra SCSI

Connectors J3 and J6 are shielded 68-pin VHDCI right-angle receptacles that protrude through the back panel bracket. See Figure 2.1 for the location of these connectors.

Differential SCSI active termination is provided on the LSIU40HVD. Termination is automatically enabled when only one of the connectors J2 and J3 (or J5 and J6) is used, or when an 8-bit device is connected to the 16-bit J3 or J6 connectors. The LSIU40HVD supplies SCSI bus TERMPWR (termination power) through a blocking diode and a self-resetting 1.5 A short circuit protection device. An on-board LED lights when TERMPWR is off. Separate jumpers for each channel allow user override of termination.

A 40 MHz oscillator is installed on the LSIU40HVD to provide the clock frequency to the LSI53C876 chip that is necessary to support Wide Ultra SCSI transfers of up to 40 Mbytes/s.

1.3.3Ultra SCSI

The LSIU40HVD has full support for Ultra SCSI as well as supporting Fast SCSI simultaneously. Ultra SCSI is an extension of the SCSI-3 family of standards that expands the bandwidth of the SCSI bus, allowing faster synchronous data transfers. Special SCSI cables are speciﬁed for operation with Ultra SCSI devices, and you must consider the total number of devices and the length of your SCSI bus when setting up your system. See the section on connecting your SCSI peripherals in Chapter 2, "Installing the LSIU40HVD," for a more detailed explanation of SCSI bus connections.

1-4	Using the LSIU40HVD

Contents

USER’S GUIDE Electromagnetic Compatibility Notices Page Page Preface Page Contents Appendix A Appendix B Glossary Terms and Abbreviations Index Customer Feedback Figures Page Tables Page Using the LSIU40HVD 1.1General Description 1.2Features 1.2.1PCI Interface 1.2.2SCSI Interface 1.2.3Board Characteristics 1.3Interface Descriptions 1.3.1The PCI Interface 1.3.2The SCSI Interface 1.3.3Ultra SCSI Installing the LSIU40HVD 2.1Quick Installation Procedure Page 2.2Detailed Installation Procedure 2.2.1Before You Start 2.2.2Inserting the Host Adapter Figure 2.1 Hardware Connections for the LSIU40HVD 2.2.3Connecting the SCSI Peripherals Table SCSI Bus Widths and Speeds Figure 2.3 SCSI Cables 2.2.3.1Making Internal SCSI Bus Connections Page Figure 2.5 Internal SCSI Ribbon Cable to Internal SCSI Device Connection Figure 2.6 Connecting Additional Internal SCSI Devices Page Figure 2.8 SCSI LED Connectors 2.2.3.2Making External SCSI Bus Connections Figure 2.9 External Cable to Host Adapter Figure 2.10 External Cable to External SSI Device 2.2.4SCSI Bus Termination 2.2.4.1Internal SCSI Connections Figure 2.12 Internal SCSI Device Termination 2.2.4.2External SCSI Connections Figure 2.13 External SCSI Device Termination 2.2.4.3Internal and External SCSI Connections Figure 2.14 Internal and External SCSI Device Termination 2.2.5Setting SCSI IDs 2.3Setting Interrupts 2.4Completing the Installation Page Conﬁguring the Page Page Page Page Page Page Page Page Page Page Page Page Page Appendix A Technical Speciﬁcations A.1 Physical Environment A.1.1 Physical Characteristics A.1.2 Electrical Characteristics A.1.3 Thermal, Atmospheric Characteristics A.1.4 Electromagnetic Compliance A.1.5 Safety Characteristics A.2 Operational Environment A.2.1 The PCI Interface Table A.2 PCI Connector J1 (Front) Table A.3 PCI Connector J1 (Back) A.2.2 The SCSI Interface Table A.4 SCSI Connectors J2/J5 and J3/J6 A.2.3 The LED Interface Page Appendix B Glossary Terms and Abbreviations Conﬁguration CPU DMA Bus Master Device Driver File Firmware Hard Disk Host Host Adapter Motherboard Multitasking Multithreading NVRAM Operating System Port Address Port Number Queue Tags RAM RISC Core SCSI ID SDMS Single-Ended STA Synchronous Data Transfer Wide SCSI Wide Ultra SCSI Wide Ultra2 Word Page Index Page Customer Feedback Reader’s Comments http://www.lsilogic.com/contacts/na_salesofﬁces.html