1.3.4.1Benefits of LVDlink

The LSI53C895A supports LVD for SCSI, which is a signaling technology that increases the reliability of SCSI data transfers over longer distances than supported by SE SCSI. The low current output of LVD allows the I/O transceivers to be integrated directly into the chip. LVD provides the reliability of HVD SCSI without the added cost of external differential transceivers. Ultra2 SCSI with LVD allows a longer SCSI cable and more devices on the bus, using the same cables defined in the SCSI-3 parallel Interface (SPI-2) standard for Ultra SCSI.

Important: To utilize Ultra2 SCSI performance, the user must only have LVD devices on the bus. Do not mix any SE devices with LVD devices as the entire bus will drop to SE with maximum Ultra SCSI performance.

1.3.5On-Board LED

On-board LEDs are used to indicate the status of the SCSI bus.

The SCSI Activity LED lights when the SCSI bus is transferring information.

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Using the LSIU80ALVD