Symbios SYM22802 Data Sheet :
SYM22802 Differential Ultra SCSI Solution
Symbios® brand SYM22802 host adapter multi-function board providing independent differential Ultra SCSI channels. Both SCSI channels identical, offering increased connectivity without utilizing additional slots. single board provides powerful dual channel, multitasking interface Ultra SCSI peripherals such disk, tape, CD-ROM, other SCSI devices. SYM22802 leverages SYM53C876 dual channel SCSI multi-function controller capable connecting directly bus, presenting electrical load, while functioning single 32-bit master. SYM22802 includes on-board configuration utility allowing viewing changing default configuration settings host adapter connected SCSI peripherals. device also provides advanced features easeof-use modifying on-board terminators depending cable configuration LEDs help with termination power (TERMPWR) monitoring. SYM22802 advanced features which make right choice applications requiring connected peripherals, isolating peripheral classes (e.g. CD-ROMs tape drives channel high performance disk drives other).
True multi-function device provides better
performance than PCI-to-PCI bridge solutions
80-MBps combined synchronous Automatic termination determined cabling
environment (ease user) Complete software support with BIOS drivers Termination power supplied through selfresetting current limiting device Allows custom driver development with SCSI SCRIPTSConnectors off-board SCSI active LEDs boot device transfer rate 16-bit Ultra SCSI channels Improved reliability with single chip solution
drive disk array used On-board BIOS supports disk drives with
greater than capacity
Increased peripheral connectivity devices Complete host adapter solution quick timeto- market
resident menu-driven BIOS configuration utility allows viewing changing default settings host adapter SCSI devices. following table lists configuration settings which changed. global settings affect host adapter SCSI devices connected
Note: host adapter boot order changed more than SCSI host adapter solution implemented.
True multi-function device (per Specification)
uses only slot
Functions 32-bit master independent channels with internal Maximum burst transfer rate MBps Supports write invalidate, read line, read
multiple commands programmable arbitration 33-MHz zero wait state operation
SCAM support Parity checking Host adapter SCSI Scan order Synchronous transfer rate Data width Disconnect time-out (sec) Scan device boot Scan SCSI LUNs Queue tags
Enabled high (0-max) Mbytes (Ultra) Enabled
Global Global Global Global Device Device Device Device Device Device Device
16-bit Ultra SCSI design based industry's SCSI TolerANTactive negation SCSI driver
receiver technology popular SYM53C875 maximum performance Local memory FLASH memory BIOS storage
SCAM (SCSI Configured AutoMatically) Level
functionality SCSI plug-and-play support
External VHDCI SCSI connector channel
Support DOS, Windows Novell NetWare,
Windows UnixWare, Open Server, OS/2, ASPI
Table Configuration Settings configuration settings which changed SYM22802.
each channel, adapter will automatically determine when cables attached which connector properly enable disable SCSI terminators. table below shows which cable combination allowed.
16-bit Internal 16-bit External
Software drivers SCRIPTS compatible with
Tagged command queuing peak performance
Shared interrupts shared memory allow
multiple devices single-interrupt system
Software support CD-ROM, tape backup, hard
disk, removable media support
Utilities: Install utility Flash utility Configuration utility Multiple host adapter support Multiple LUNs SCSI RAID media
Table Legal cable combinations Four jumpers included manually force different cable configurations.
channel included indicate status termination power (TERMPWR).
host adapter includes jumper select separate interrupts (channel routed INTA# channel routed INTB# pin) shared interrupts (channel channel routed INTA#/ pin).
Form Factor Approx. board size, universal
Subsystem Subsystem Vendor support allows development custom software while still using standard board configuration.
Host compliant On-board, field upgradable, bytes FLASH
BIOS On-board serial NVRAM enhanced SCSI Plugand-Play (SCAM) support
Internal connectors channel 68-pin, right-angle, high-density latching SCSI 4-pin off-board SCSI active External connector channel 68-pin, VHDCI high-density shielded with
Processor High-performance SCSI RISC core Termination Automatic, active Termination power Self-resetting
68-Pin High Density SCSI Connector
Bracket ISA/EISA style Electrical (3.0 max) max) power dissipation Watts PRSNT1# open PRSNT2# ground Environmental (operating) relative humidity (non-condensing) MTBF 500,000 hours Agency certification Class CISPR VCCI Class Mark 94V0 rated
68-Pin High Density SCSI Connector
NVRAM 68-Pin VHDCI
Board layout graphical representation SYM22802 Differential Ultra SCSI host adapter