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/sec 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 Ultra SCSI 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.
PCI - UltraSCSI
Bus Master
Single-Chip
Host Adapter
INIC-940
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
Features:
SCSI Interface:
PCI 32-bit 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 2.1 Compliant, burst transfer rates of 133
MB/s
Built-in S/G execution engine
PCI Bus Master/
S/G Engine
PCI Slave
Registers
Local DMA
Control and Intelligent
Scatter/Gather
Engine
Local DMA
Control and Intelligent
Scatter/Gather
Engine
SCSI DMA
Control
SCSI Protocol
Handler
SCSI
Registers
SCSI ROM
based
Sequencer
DATA FIFO
Offset FIFO
E
2
PROM
32 bit PCI Interface
UltraSCSI
Local Bus
Interface
Serial E
2
PROM Logic
FLASH
BIOS
Initio Corporation, 2188B Del Franco, San Jose, CA 95131 Tel: (408)577-1919 Fax: (408)577-0640 e-mail: sales@initio.com
We Bring Innovative Solutions to your I/O needs.
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