INIC-940


PCI to UltraSCSI Single Chip Master Controller


The Initio INIC-940, a single-chip PCI to UltraSCSI host adapter, provides a complete SCSI solution for PCI motherboard applications. The Initio INIC-940 supports the latest UltraSCSI standards, transferring data at up to 20 MBytes/second and takes advantage of the 133 MBytes/second burst rate of the PCI bus to provide superb I/O performance. INIC-940 supports a wide range of popular operating systems and has been extensively tested over a large matrix of peripherals and systems. In addition to the 8-bit UltraSCSI interface and 32-bit PCI 2.1 compliant interface, INIC-940 has a memory interface to access SEEPROM devices. INIC-940 has a SCSI protocol processor which handles all of the SCSI bus phases. The chip also provides support for external SCSI bus terminators and SCAM level 1. INIC-940 has an on chip advanced SCSI I/O cell which is capable of adjusting the slew rate on the SCSI signals to ensure signal integrity over different cabling environments. INIC-940 is available in a 160-pin PQFP.

Features | Additional Features



Features


SCSI Interface:

  • Dedicated SCSI processor for handling SCSI operations
  • SCSI transfer rates from 5 MB/s Asynchronous SCSI to 20 MB/s Synchronous UltraSCSI
  • Supports both auto and programmable SCSI termination
  • Supports Command Tag Queuing and Disconnect/Reconnect
  • Advanced SCSI I/O cell capable of adjusting the SCSI signal slew rate

PCI 32-bit Interface:

  • PCI 2.1 Compliant, burst transfer rates of 133 MB/s
  • Built-in S/G execution engine

Additional Features
 
  • Support for SEEPROM and FLASH
  • Plug & Play, allows user to change configuration without any need for jumpers
  • On-chip power managment features to decrease the power consumption
  • Full driver support for all of the major Operating Systems
  • Provides ASPI manager for DOS, Windows and Netware
  • BIOS support for DOS and Windows application without driver involvement

 

TECHNICAL SPECIFICATIONS

OS COMPATABILITY

Microsoft Windows 3.1x, Windows 95, Window 98, Windows NT 4.0, MS-DOS 6.x, Novell NetWare 3.1 & 4.11, OS/2 2.1, OS/2 Warp 3.0/4.0, SCO Unix 3.24-5.0x, SCO UnixWare 2.1/7.x, Linux

HOST BUS

PCI local bus, rev 2.1

HOST INTERFACE

32-bit bus master DMA

HOST BUS DATA TRANSFER RATE

Up to 133 MB/sec burst rate

SCSI BUS TRANSFER RATE

20 MB/sec in UltraSCSI Mode

DEVICE SUPPORT

Connect up to 15 devices* using non-Ultra2

DOCUMENTS IN PDF FORMAT

DATA SHEET

*Actual number of SCSI devices may be limited. Please review the SCSI-3 specification for further information.

 

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