Контроллер LSI Logic Symbios SYM22910 Dual Channel Ultra2 LVD SCSI Host Adapter, PCI-X
Описание и характеристики:
Breakthrough technology again sets new SCSI I/O standards with the SYM22910 PCI-to-Ultra2 SCSI dual channel host adapter. Using the SYM53C896 single-chip, PCI to Ultra2 SCSI dual controller, the SYM22910 host adapter offers superior performance, cost savings, enhanced scalability and connectivity advantages. Matching the maximal performance of the 64-bit PCI bus to two independent Ultra2 SCSI channels, the SYM22910 host adapter provides up to 160 MBps aggregate SCSI throughput. Through Symbios
® LVDlink™ (Low Voltage Differential) technology, the SYM22910 provides unmatched performance, device connectivity and signal reliability for Ultra/Ultra2 LVD operation. The Symbios SYM22910 provides a truly universal board able to support single-ended Fast/Ultra devices, or LVD Ultra/Ultra2 devices. The dual channels offer increased connectivity without utilizing an additional PCI slot or PCI load. Designing systems with the SYM22910 is easy because one or both channels can be dedicated to LVD devices. As an alternative, one channel can be used to support mixed performance single-ended devices. This board provides a powerful dual channel, scalable, multitasking interface for SCSI disk drives, JBOD and RAID system interconnect, and other single-ended or LVD SCSI devices.
The SYM22910 is a zero wait-state DMA bus master in legacy 32-bit or (the newest) 64-bit PCI bus systems. The 64-bit host adapter also operates in existing 32-bit systems, providing greater flexibility with valuable system resources. While operating in a 32-bit PCI slot, the SYM22910 supports PCI 32-bit Dual Address Cycles. The SYM22910 includes an on-board configuration utility, allowing the viewing and changing of default configuration settings for the host adapter and SCSI devices. It also provides advanced ease-of-use features such as automatic termination (depending on cable configuration) and on-board LEDs for termination power monitoring. The advanced features of the SYM22910 64-bit PCI to Ultra2 Dual Channel host adapter make it the right choice for servers of all sizes.
Applications
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Servers with large arrays of high performance hard disks
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Ideal for cluster configurations for availability and scalability
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Supporting mixed single-ended and LVD SCSI devices system applications
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Improved cable lengths and connectivity over Ultra SCSI based systems
Benefits
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Complete host adapter solution for quicker timeto-market
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True multi-function, single-chip device provides better performance than PCI-to-PCI bridge solutions
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Improved reliability with single chip solution
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Complete software support with BIOS and drivers
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Ultra2 SCSI provides increased connectivity (cable length and number of SCSI devices supported) over Ultra SCSI
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Automatic termination determined by cabling environment provides increased ease of use for the OEM and the end user
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Features Symbios LVDlink™ universal LVD technology
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Termination power supplied through self-resetting current limiting device.
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Any drive in a disk array can be used as the boot device
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On-board BIOS supports greater than 8-GB disk drives
SCSI Features
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Ultra and Ultra2 SCSI (LVD only)
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Fast and Ultra SCSI (single-ended only)
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16-bit, auto-selecting, single-ended or LVD SCSI design based on SYM53C895 PCI-Ultra2 SCSI dual controller IC for maximum performance
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Local memory bus for BIOS storage
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128K FLASH EPROM allows easy field upgradability of BIOS
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Uses Ultra2 SCSI standard external VHDCI (Very High Density Cable Interconnect or 8 mm) SCSI connector per channel
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Uses Symbios SCSI TolerANT™ active negation SCSI driver and receiver technology provide highest signal integrity in noisy cabling environments
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Available SCAM (SCSI Configured AutoMatically) Level 1 functionality for SCSI plug and play support
PCI Features
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Direct (bus master) memory access for low overhead with 64-bit (or 32-bit) burst data transfers at 266 MBps(133 MBps for 32-bit) PCI data transfer rates
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33-MHz bus master with zero wait-state PCI transfers
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Up to 64-byte PCI burst rate to maximize the PCI data transfer rate
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Functions as one 64-bit or 32-bit PCI DMA Bus Master
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Two independent DMA channels with internal programmable arbitration
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33-MHz PCI bus with zero wait-state operation
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Maximum burst transfer rate of 266 MBps
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Supports PCI Write and Invalidate, Read Line, and Read Multiple commands
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Operates in 32-bit and 64-bit PCI bus systems
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Supports dual address cycles (DAC) when in 32-bit systems
SCSI Termination
Automatic and Manual Termination.
The SYM22910 PCIUltra2 SCSI host adapter automatically determines if cables are attached to any channel’s SCSI connectors and then properly enables/disables that channel’s SCSI terminators. Table 2. illustrates the available settings.
Termination Power.
Each SCSI channel has two LEDs to indicate the terminator’s power (TERMPWR) status. The TERMPWR Good (Channel A or B) LED indicates when the termination power is above 3.0 volts. The TERMPWR
Shorted
LED indicates when the termination power was subjected to an over current condition causing the selfresetting current limiting device (circuit breaker) to trip.
Technical Specifications
Supported buses:
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3.3 / 5V PCI local bus, PCI version 2.1 64 or 32-bit, DMA Bus Master
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Two, 16-bit wide, single-ended or low voltage differential (LVD) SCSI buses
Asynchronous
Synchronous – Fast/Ultra/Ultra2
Performance:
PCI transfer rates up to 266 MBps (per channel in 64-bit systems) up to 133 MBps (per channel in 32-bit systems)
SCSI Asynchronous up to 14 MBps (per channel) up to 28 MBps (aggregate)
SCSI Synchronous single-ended
Fast–up to 20 MBps (per channel)
Ultra –up to 40 MBps (per channel)
–up to 80 MBps (aggregate)
SCSI Synchronous LVD Ultra –up to 40 MBps (per channel)
–up to 80 MBps (aggregate)
Ultra2 –up to 80 MBps (per channel)
–up to 160 MBps (aggregate)
SCSI Bus Termination:
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Active Termination with TolerANT (active negation) technology
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Universal LVDlink SCSI with automatic switching to singleended when single-ended devices are connected to SCSI bus
–Senses connection to high voltage differential and automatically disables on-board termination
Termination Control:
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Automatic or manually controlled
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Termination power: self-resetting
SCSI bus connection:
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Up to 15 SCSI, SCSI-2, Ultra or Ultra2 peripherals per channel
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Up to 30 SCSI, SCSI-2, Ultra or Ultra2 peripherals aggregate
On-board LED Indicators for SCSI Activity:
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SCSI Activity (Green) – indicates activity on the designated SCSI bus each channel (A & B)
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TERMPWR Shorted – indicates when the termination power self-resetting fuse has opened
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TERMPWR Good – indicates that the termination voltage is above 3 V
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LVD Mode –indicates when the designated bus is operating with all LVD SCSI devices
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SE Mode – indicates that the designated bus is operating with a SE device connected to it with a SE device connectors
Board connectors:
Internal: Universal, 64-bit PCI edge connector (2) 68-pin, right angle, high density latching SCSI bus, Channels A and B
External: (2) 68-pin VHDCI, shielded with screw jacks, Channels A and B
Off-board LED Indicator: SCSI Bus Active 4-pin header for off-board Channels A & B LEDs
On-board jumpers: Currently the SYM22910 is a jumperless solution.
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Optional: Hardware termination disabling jumpers can be added if required.
Physical and Environmental Specifications:
Board Size: Approximately 7.5 in. X 4.2 in.
Form Factor: PCI 2.1, 64-bit Universal Board
Bracket: ISA/EISA style
Operating temperature: 5° to 55° C
Relative humidity range: 5% to 90% non-condensing
Maximum dew point temperature: 32° C
Storage temperature: -40° to 85° C
MTBF: > 400,000 hours
Electrical: 5 V +/- 5% (3.0 A max) 12 V +/- 5% (50 mA max)
PCI Maximum power dissipation:
15 Watts
PRSNT1# - open
PRSNT2# - ground
Full agency certification and compliance:
FCC and CISPR Class B, CE, VCCI Class 2, UL 94V0 approved
