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3 Interface Cards
SCSI Adapter Cards
Cables
Internal SCSI cable
The internal SCSI cable is supplied with an embedded multi-mode
terminator at one end of it.
LED Activity cable
The LED cable supplies SCSI LED activity to the front panel hard disk LED.
For this to work, the SCSI LED cable must be connected to the LED Activity
connector on the Ultra 160 SCSI PCI Adapter card (refer to graphic on page
91) and the SCSI LED connector on the system board.
The connectors on both ends of the cable are identical, hence they can be
connected to either connector.
SCSI Controller
The SCSI controller characteristics are as follows:
•
PCI 64-bit 33 MHz.
•
SCSI Multimode LVD/SE.
SCSI Bus
•
LVDlink™ transceivers meet all of the SPI-2 standard requirements.
•
Uses LSI Logic TolerANT
®
active negation technology for improved
single-ended SCSI signal integrity.
•
Pre-fetches up to 8 words of SCSI SCRIPTS
®
instructions to save PCI bus
overhead.
•
Supports multithreaded I/O algorithms in SCSI SCRIPTS with fast I/O
context switching.
•
Includes 8 KB of internal RAM for SCRIPTS instruction storage to reduce
or eliminate instruction fetches over the PCI bus.
•
Provides data reliability and cable distance of differential SCSI without
cost of external differential transceivers.
•
Improves connectivity (up to 15 LVD devices) and cable lengths (up to 12
meters with LVD SCSI bus). Longer cables may be possible in point-to-
point connections.
•
Supports SURElink (Ultra 160 SCSI Domain Validation) to ensure link
integrity at Ultra 160 transfer rates and to renegotiate to lower speed and
bus width if necessary.
PCI connector
•
One 64-bit universal connector (supports both 5 V and 3.3 V signaling).
•
Configured as a 15 W board (PRSNT1 and PRSNT2 grounded).
•
The SCSI Adapter Card sink current on the 5 V power supplies lines. The
3.3 V is supplied by an on-board regulator.
SCSI LED
Connector