RMI公司XLS系列处理器

Raza Microelectronics公司（RMI®）于2007年2月7日推出了XLS处理器系列。XLS处理器属于SoC（System-on-a-chip）通用处理器，它具有高度可编程、可升级、智能包管理功能，并把控制层面、数据层面和安全业务整合为一体。

XLS处理器继承了RMI的旗舰产品XLR处理器的关键技术，包括基于MIPS的多核、多线程架构。XLS处理器提供入门级到中端级应用所必须的处理速度、可升级性和创新性，同时保持了与XLR系列处理器的软件兼容性。XLS处理器包括600系列、400系列和200系列，主要应用于嵌入式通信、电信、企业无线及有线局域网以及中小型企业网络市场。

       XLS系列处理器各型号主要特性列表：

主要特性

XLS608

XLS408

XLS404

XLS204

XLS202

Threads

8

8

4

4

2

XLS Cores

2

2

1

1

1

L2 Cache

1 MB

1 MB

512 KB

256 KB

256 KB

转发性能（线速）

2 Gbps

2 Gbps

2 Gbps

1 Gbps

1 Gbps

工作频率

800MHz

1GHz

1.2GHz

800MHz

1GHz

1.2GHz

800MHz

1GHz

1.2GHz

600MHz

800MHz

1GHz

600MHz

800MHz

1GHz

DDR2 DRAM Ports

4

2

2

1

1

Ethernet-10/100/1000（SGMII）

8

6

6

4

4

* Ethernet- RGMII

1

1

1

1

1

PCI-E

2

2

2

2

2

USB2.0

2

2

2

1

1

BGA Package

928

690

690

549

549

* Shared Ports

    每种型号的XLS处理器都分为三种不同的功耗级别：标准功耗（Standard）、低功耗（Low-Power）和超低功耗（UltraLow-Power）。

XLS416 Processor

Next Generation Multiprocessing

Overview
The XLS416 processor from NetLogic Microsystems offers the industry’s first multi-core, multi-threaded processor with integrated Serial RapidIO interface support and IEEE1588-compliant precision timing protocol (PTP) controller, making it an ideal solution for next-generation wireless designs.

The XLS416 processor provides system designers with pin-compatible upgradeability from the previously announced dual core and single core XLS® family of processors. The XLS processor family leverages the original XLR® processor series performance, scalability and innovation while extending software compatibility throughout both product families and addressing applications where PCB real estate and power are premiums.

The XLS416 processor supports a rich set of features and integration with unprecedented power/performance for embedded communication and telecommunication, enterprise wireless and wired-line LAN, and SMB networking applications. These solutions include 3G/WiMAX/LTE base stations, integrated security appliances, wireless Access Points and switches, ATCA and AMC service cards, secured wire-line routers and switches, telecom media gateways, radio controllers and network signaling equipment.

The XLS416 processor integrates general-purpose processing, high level programming, scalability with thread processing, intelligent packet management, and the ability to combine control plane, data plane and security operations on a single processor built on advanced submicron silicon technology.

Based on NetLogic Microsystems’ throughput-optimized multi-core, multi-threaded architecture, the XLS416 processor integrates up to 16 fine-grain processing threads (using single-clock thread context switching) from four MIPS64 CPUs. Threading overcomes processor stalls common to scalar or superscalar (multi-issue) CPUs when processing packets in networking environments. Each XLS processing core contains four tightly coupled hardware threads capable of hiding latency, improving computational efficiency and throughput. One XLS processing core has the equivalent throughput of up to four single threaded CPUs. The Fast Messaging Network™ (FMN) eliminates performance robbing semaphores and spinlocks found in multi-processor architectures and system loading due to intra-packet movement by supporting billions of in-flight messages and packet descriptors between all on-chip elements.

Additional features include large multi-level caches, autonomous security and compression accelerators, quad memory controllers, eight Gigabit Ethernet MACs supporting S/RGMII or XAUI, PCI-Express or SRIO, and GPIO. The integrated peripheral I/O allows seamless integration in both today’s and next-generation platforms. The PCIe and SRIO controllers and the octal network ports with IEEE1588-compliant PTP control facilitates high throughput data connections in ATCA, AMC, bladed, proprietary fabric, backplane, and standalone planar-based solutions.

Product Specification

Next Generation Processor Cores

• 64-bit MIPS64 ISA with enhanced instructions
• 4 cores – each 4-way Multi-Threaded
• Fine-grain processing of 16 threads
• Programmable thread scheduling policies
• Branch Prediction and TLBs
• 800MHz, 1GHz or 1.2GHz operation

Cache Subsystem

• Fully cache-coherent MOSI Protocol
• 8-way set-associative architectures
• L1 DedicatedPlus Cache® per thread allocation
• 32KB ECC-protected L1 writeback data caches
• 32KB parity-protected L1 instruction
• 1MB ECC-protected banked writeback L2 caches

High Speed Distributed Interconnects

• Connects all cores, caches, I/O and processing agents
• 6 simultaneous memory transactions per clock
• Throughput-optimized split transaction operations
• Fast Messaging Network for communication between processing and I/O

Leading Edge Autonomous Accelerators

• Up to 2.5Gbps of bulk encryption/decryption
• Kasumi, DES/3DES, AES/AES-GCM, ARC4 (128, 192, 256)
• MD5, SHA-1, SHA-256/384/512 (All HMAC)
• RSA, DH and ECC Exponentiation and Multiplication
• Up to 2.5Gbps of Compression/Decompression
• ZLIB/Deflate/GZIP (RFC1950/1/2), 32KB Dictionary Size

Networking Hardware Acceleration

• IEEE1588-compliant Precision Timing Protocol (PTP) controller
• Packet Distribution Engine® for line rate processing
• Packet ordering assists
• TCP checksum verification/generation

General Purpose Programming

• Virtual MIPS Mode isolates cores and enables virtualization of unmapped memory regions
• Supports both clustered and SMP modes
• Supports parallel, pipelined and hybrid processing modes
• On-board debug support; performance monitoring

Integrated System Interfaces

• PCMCIA interface
• Bootable NAND Flash memory interface
• Dual USB 2.0 ports; host and client modes
• Dual I2C interfaces
• Dual 16550 UART interfaces
• 32-bit GPIO interface
• IEEE 1149.1 JTAG and BIST functionality

High Performance Memory Controllers

• Dual DDR2 DRAM controllers
• Advanced nibble error correction
• 2 x36 or 1 x72 mixed memory use
• 4-channel DMA controller with built-in CRC generation

Extensive Networking and I/O Interfaces

• Eight 10/100/1000 Ethernet MACs
• (8 SGMII, or 7 SGMII + 1 RGMII)
• Each group of 4 MACs optionally configurable as a XAUI port
• Packet distribution and order sequencing hardware
• PCIe 1.1 controller supporting 4 x1 or 1 x4 lane configurations
• PCIe interface can be optionally configured as SRIO

Power Management

• Dynamic Clocking control
• On-chip thermal sensor
• Software-programmable clock throttling

Product Availability

The XLS416 processor is available in RoHS-compliant BGA packaging and supports 800MHz, 1GHz and 1.2GHz operating frequencies at industrial (100°C) operating temperatures. The XLS processor family is supported by a comprehensive software development kit (SDK) which contains reference and production-ready software components, including the NetLogic Microsystems OS accelerated wire-level OS, device drivers for open source Linux and commercial OS, complete tool chains, diagnostics, and the NetLogic Microsystems firmware suite. The SDK enables customers to quickly develop or migrate existing software to design high-performance, feature-rich solutions with ease.

Also available from NetLogic Microsystems are several evaluation platforms designed to allow customers to evaluate the entire product family’s integrated features and perform application tests in parallel with hardware development.