The Initio INIC-950, a single-chip PCI to Ultra/Ultra Wide SCSI host adapter, provides a complete SCSI solution for PCI motherboard applications. The Initio INIC-950 supports the latest UltraSCSI and UltraWide SCSI standards, transferring data at up to 40 MBytes/second and takes advantage of the 133 MBytes/second burst rate of the PCI bus to provide superb I/O performance. INIC-950 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 16-bit Ultra SCSI interface and 32-bit PCI 2.1 compliant interface, INIC-950 has a memory interface to access SEEPROM and Flash. INIC-950 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-950 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-950 is available in a 160-pin PQFP.
Features | Additional Features
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SCSI Interface:
- Dedicated SCSI processor for handling SCSI operations
- SCSI transfer rates from 5 MB/s Asynchronous SCSI to 40 MB/s Synchronous Ultra Wide SCSI
- 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
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- 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
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TECHNICAL SPECIFICATIONS |
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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 |
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HOST BUS |
PCI local bus, rev 2.1 |
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HOST INTERFACE |
32-bit bus master DMA |
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HOST BUS DATA TRANSFER RATE |
Up to 133 MB/sec burst rate |
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SCSI BUS TRANSFER RATE |
40 MB/sec in UltraWide SCSI Mode
20 MB/sec in UltraWide SCSI Mode |
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DEVICE SUPPORT |
Connect up to 15 devices* using non-Ultra2 |
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DOCUMENTS IN PDF FORMAT |
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DATA SHEET |
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*Actual number of SCSI devices may be limited. Please review the SCSI-3 specification for further information. |
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