•Performs complex SCSI bus sequences without interrupts, including restore data pointers
•Serial EEPROM for user configuration utility
•SCSI bus activity LED connector and on-board LED
1.2.3Board Characteristics
•PCI board dimensions,
152.4 x 88.90 mm (6.00 x 3.5 inches)
•PCI Universal 32-bit card edge connector
•HD 68-pin external connector
•HD 68-pin internal connector
A mechanical drawing showing board dimensions and component layout is located in Appendix A, “Technical Specifications.”
1.3Interface Descriptions
This section provides a more detailed explanation about the PCI
Interface, the SCSI Interface, Ultra2 SCSI Technology, and LVDlink
Technology.
1.3.1The PCI Interface
PCI is a high-speed standard local bus for interfacing a number of I/O components to the processor and memory subsystems in equipment ranging from PCs to servers. The PCI functionality for the LSIU80ALVD is contained within the LSI53C895A. The LSI53C895A connects directly to the PCI bus and generates signal timing and bus protocol in compliance with the PCI Specification Revision 2.1.
The PCI interface operates as a 32-bit DMA bus master. The connection is made through edge connector J1 (see Figure 2.1). The signal definitions and pin numbers conform to the PCI Local Bus Specification Revision 2.1 standard. The LSIU80ALVD conforms to the PCI universal signaling environment for a 5 V or 3.3 V PCI bus.
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