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PM8011 maxSAS SRC 8x6G
PCI Express 2.0 8-Port SAS-2 RAID Controller
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Features
PRODUCT OVERVIEW
The maxSAS SRC 8x6G is a highly-integrated, PCIe x8 to 8-port
SAS-2 1.5G/3G/6G RAID-on-Chip (RoC) controller that enables next
generation SAS-2 server equipment. The SRC's breakthrough
RoCstar architecture eliminates the bottlenecks of traditional RoC
controllers, providing a quantum leap in server I/O performance,
efficiency and scalability.
The SRC 8x6G integrates a fully offloaded 8-port SAS-2 protocol
controller, a high performance PCI Express 2.0 host port, RAID and
T10 DIF acceleration, DDR2-800 memory port, multi-threadcapable
IO processor, and additional application acceleration
processors - all tied together through the RoCstar ultra-high
throughput, contention-free architecture.
The SRC 8x6G offers a scalable solution for phased RAID development
to effectively manage end-customer requirements. To
accelerate customer porting and development, the architecture
provides both a hardware and firmware infrastructure along with
a development environment in the form of a product development
kit. BENEFITS
- Higher system performance with RoCstar contention-free
architecture, eliminating internal bottlenecks and resource
contentions that slow today's shared-bus solutions
- By enabling simultaneous access to all chip resources, RoCstar
drastically improves system performance by increasing I/O
throughput and lowering latency
- Higher system performance with hardware accelerated RAID 5
and 6
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- IT professionals will see a significant performance increase in
time critical functions such as RAID rebuilds and data backup
- Preserves legacy system support through backward
compatibility with SAS 1.0a and PCIe 1.1
- Encryption-free device to comply with export restrictions
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PRODUCT HIGHLIGHTS
Ultra-high Performance RoCstar Architecture
- Non-blocking internal interconnect for processor cores, ports,
peripherals and external memory
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- RoCstar switch architecture eliminates internal bus contention
and bus arbitration delays
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Processor Complex Subsystem
- Embedded 600 MHz MIPS 34K 32-bit multi-threading IO
processor
- 4-way set associative writeback, 32-Kbyte Instruction and Data
caches
- Flexible Thread Policy Manager with programmable QoS
support
- Multi-thread EJTAG debug and RTOS visibility through Green
Hills MULTI IDE
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- Configurable peripheral interfaces:
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NOR interface support for Flash, ROM, EEPROM, and SRAM
support
- 8 or 16-bit data transfers
- Four configurable multi-master/slave Two-wire Interfaces
(TWIs) supports variable bit rates up to 400 Kbit/s
- Two industry-standard 16750 UART ports
- Single Serial Peripheral interface
- Two SFF-8485 compliant Serial GPIO ports
- Firmware API for peripheral control including features such
as activity LED, UART configuration, zoning configuration,
interprocessor communications, enclosure control
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Octal SAS/SATA Processor
- Eight-port SAS/SATA 1.5G/3G/6G fully offloaded protocol
controller
- Supports SSP, SMP and STP operating as a SAS initiator or target
- Provides SATA host for directly connecting SATA HDD
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- Supports Hot-plugging, staggered spin-up, and SATA Native
Command Queuing
- Full simultaneous bandwidth up to 600 Mbyte/s per direction
per PHY or 1200 Mbyte/s bi-directional per PHY
- Flexible wide-port capability supports any combination of
widths up to eight serial interfaces per wide port
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PCIe/Memory Interface Controller
- Eight PCI Express PHYs compliant with base specification 2.0,
operating at 5 Gb/s and 2.5 Gb/s per link
- Backwards compatible to PCIe 1.1
- 32/64-bit DDR2 with optional ECC support
- DDR2-533 to DDR2-800 supporting up to 4 GB DRAM
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- Full initialization of memory on hardware reset
- Optimized for low latency return of CPU reads
- Provides block DMA to move data between the DDR memory,
PCIe interface, and RoCstar interconnect
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RAID Application Accelerator Engine
- Supports RAID implementations 0/1/10/5/50/6 and 60
- Computes RAID 6 via bit-wise XOR and Reed Solomon (RS) (P+Q)
on two simultaneous data streams
- Dual parity generated in a single pass, improving performance
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- Checking, insertion and replacement of T10 DIF as defined by
SBC-2
- Firmware API for accessing subsystem
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Debug
- CPU EJTAG debug support via Green Hills MULTI with RTOS
awareness
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- Memory and cache performance monitoring
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Physical
- 672-pin 27 x 27 mm BGA package
- 1.0 mm ball pitch
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- 90 nm CMOS technology
- 6 W to 10 W typical power operation, depending on
configuration
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Applications
- PCIe RAID cards
- RAID on Motherboard
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- SAS Host Bus Adapter
- Servers, Workstations and External RAID storage systems
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