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参数资料
| 型号： | SYM201F40 |
| 厂商： | LSI CORP |
| 元件分类： | 存储控制器/管理单元 |
| 英文描述： | 320 Mbps, FIXED DISK CONTROLLER, PQFP176 |
| 封装： | TQFP-176 |
| 文件页数： | 3/4页 |
| 文件大小： | 137K |
| 代理商： | SYM201F40 |
Product Description
The Automated Context Switching Engine of the
SYM201F40 optimizes SCSI bus utilization and
minimizes command latency for disk drives in high
performance systems. This engine allows the
SYM201F40 to employ the full Ultra2 SCSI performance.
To accomplish this, the microprocessor is removed from
real time management of SCSI commands. Instead, the
microprocessor queues commands through the use of
Host DMA context structures. The Automated Context
Switching Engine intelligently swaps contexts, connects/
disconnects from the SCSI bus, and transfers data.
To safely harness the power of the Automated Context
Switching Engine, the SCSI core allows context switches
based on the state of command execution and SCSI bus,
while maintaining absolute data integrity. This
protection also enables the configurable SCSI Auto-Data
Engine to use existing contexts and create new contexts
without the disruption of currently executing DMA
contexts. After receiving a command, the SCSI Auto-
Data Engine automatically selects the most efficient
transition method into the data transfer phase. It then
directs the Automated Context Switching Engine to load
the appropriate DMA context.
Other key features of the SCSI core:
easy exception handling through queued instructions
resume capability
automatic multi-byte message handling automation
consistent context interrupt reporting
The simple and efficient headerless engine optimizes
headerless formats while assuring maximum data
integrity. It does not require any change from most
previous headered servo systems, nor does it rely on
firmware for real-time critical functions. Built-in checks
assure data integrity. The headerless engine, in
conjunction with the WCS-based Sequencer, does not
restrict the architecture of any firmware algorithms, such
as defect management. So any current or future drive
requirements can be easily implemented.
Support
Training is available at your location or at Symbios Logic.
Support is available to assist the integration of the
SYM201F40 into a functional disk drive.
Extensive Storage and I/O Bus Expertise
Symbios Logic is a leading supplier of disk, optical, and
tape semiconductors. The SYM201F40 is part of Symbios
Logic’s family of high performance hard disk drive
controllers, which include FC-AL and Ultra2/Ultra SCSI
optimized versions. These products are developed in
synergy with Host I/O and RAID products to assure high
performance and industry compatibility. Symbios Logic’s
unique solutions offer complete connectivity between
Host I/O to RAID to disk using the latest I/O
technologies.
Key Advantages AssureYour Success
Symbios Logic has a long history of helping customers
succeed by taking a collaborative approach to getting
their solutions into high volume manufacturing. We
provide leading analog functions, embedded
microprocessor cores, and embedded memory. You select
the best performance/cost solution. This relationship,
built on Symbios Logic’s expertise in providing ASIC
development design environments, allows you to
incorporate your choice of value-add functions. By
combining the latest semiconductor manufacturing
technology and in-house production capacity with our
unique design philosophy, Symbios Logic offers a
complete solution to ensure your success in the volatile
storage market. Getting your product to market quickly
is one of our primary goals.
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