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ARM1176 Processor

ARM1176 Processor Image (View Larger ARM1176 Processor Image)
The ARM1176™ applications processors deployed broadly in devices ranging from smart phones to digital TV's to eReaders, delivering media and browser performance, a secure computing environment, and performance up to 1GHz in low cost designs. The ARM1176JZ-S processor features ARM TrustZone® technology for secure applications and ARM Jazelle® technology for efficient embedded Java execution. Optional tightly coupled memories simplify ARM9™ processor migration and real-time design, while AMBA® 3 AXITM interfaces improve memory bus performance. DVFS support enables power optimization below the best-in-class nominal static and dynamic power of the ARM11TM processor architecture.

 

 

 


Low risk and fast time to market 

  • Proven, well-understood and widely deployed processor
  • Available as soft core or hard macro (from ARM and ARM partners)
  • Pre-verified supporting components and reference implementation flows
  • Extensive software and tool ecosystem

High performance in low-cost designs

  • 800MHz to 1GHz+ at 65G in under 2 mm2
  • ARM System IP, Physical IP, and available third party design support
  • ARM926/AHB to ARM11/AXI migration simplified through AMBA® AHB-AXI bridge fabric

Compelling end-user experience

 

Considering an ARM1176-based design?

The ARM1176 is still actively being licensed for application processor and baseband processor designs due to it's maturity, low level of implementation risk, and low implementation cost. For Partners designing cutting edge application processors and SoCs for web connected products, the Cortex-A5 processor provides higher performance in less area and power, with full entitlement to ARMv7A optimized ecosystem software. 


The ARM1176 processor performance reaches up to 1GHz and beyond in 40G, and can reach 1GHz in 65nm with overdrive voltages, Lvt, and speed binning typical silicon. For static power optimized designs, the ARM1176 processor can deliver performance in the 500MHz range on LP processes. Implementation can be even faster with process optimizations.

PPA ARM1176 ARM1176 ARM1176
Process Geometry TSMC65LP TSMC 65GP TSMC 40G
Performance (DMIPS) 603 965 1238
Performance (Coremarks) 1002 1605 2058
Frequency * (MHz) 482 772 990
Total area (mm2) 1.75 1.94 1.17
Power efficiency (DMIPS/mW) 3 6 12
Dynamic power (mW/MHz) ** 0.41 0.208 0.105

* at SS, Vdd - 10%, 125C, W/C, 50ps clock jitter, 10% OCV margin, 12T SC, fast memories; dependent on tools, flows, Physical IP
** Dynamic Power at TT, Vdd, 25C measured running Dhrystone

The ARM1176 processor delivers significantly better performance on media rich workloads than the ARM926EJ-S™ processor. The relative performance increase on EEMBCv2 suites is 22% on a per/MHz basis. Further performance gains over ARM9™ family processors are possible with the higher max frequencies supported by the ARM11™ architecture.

ARM1176 vs. ARM926 performance comparison


ARM1176
Architecture ARMv6
Dhrystone Performance 1.25 DMPS/MHz
Multicore No - Single core only
ISA Support
Memory Management Memory management unit
Debug & Trace CoreSight™ Design Kit for ARM11 (available separately)

ARM1176 Key Features

Performance to enable excellent end-user experience

  • 750MHz (TSMC 65GP) with conservative design 1GHz+ with design optimizations
  • Low latency mode for interrupt responsiveness
  • TCM for ARM9™ processor migration, real-time demands
  • Physically addressed caches for multi-tasking performance
  • Broad OS support, multiple Linux distributions, amazing ARM ecosystem
  • Full Internet experience

Product maturity enables rapid time to market and low risk

  • Well proven technology in wide range of applications
  • Available as soft core or hard macro from ARM (TSMC (90G) or from 3rd parties (Socle/GLOBALFOUNDRIES - 65nm, TSMC - 65nm)
  • AMBA AXI supported by wide range of fabric
  • CoreSight debug offering unrivalled system visibility
  • Comprehensive range of development tools from ARM and from third parties
  • Range of Reference Methodologies supplied

Low Power Leadership

  • Shutdown modes, Clock Gating, and DVFS capability
  • 93% of flops are clock gated
  • Separate Main TLB and Micro-TLBs --> main TLB is not clocked unless micro-TLB misses
  • Avoids unnecessary Tag-RAM and Data-RAM activity for sequential accesses
  • Predictive use of Cache or TCM

Mode Power
Run .208 mW/MHz in 65G
Standby Leakage Only
Dormant Memory Retention current
Shutdown Zero power draw

DVFS - supported by the ARM1176

  • Physical IP Power Management Kit Clamps allow core to shut down while TCM still enabled in Dormant mode
  • Asynchronous interfaces allow core to run at non-integer multiple of bus frequency
  • L-Shift clamps allow core voltage to differ from rest of SoC

DVFS - supported by the ARM1176

Powerful Vector Floating Point Unit

  • Fully IEEE 754-compliant mode
  • Rare cases bounced to software support code for full IEEE 754 support
  • Suited to safety-critical application like Automotive and Avionics

RunFast mode for fast, near-compliant hardware execution of all instructions

  • No software support needed, performance increased as no software involved
  • Suited to consumer applications like 3D graphics
  • Compiler automatically targets VFP

Functions supported in hardware:

  • Multiplication, addition, and multiply-accumulate ( various variants)
  • Division and square root operation (multi-cycle, not pipelined)
  • Comparisons and format conversions
  • Operations can be performed on short vectors (From assembler only)
  • Separate pipelines allow load/store and MAC operations to occur simultaneously with divide/square root unit operation
  • VFP may be powered-down when not in use
  • Clock gated and/or power completely removed

VFP has it's own additional register set

  • 32 single precision
  • 16 double-precision
  • Sufficient to double-buffer algorithms
    • Linpack, Filters, Graphics transforms, etc.

Secure Computing Environment with TrustZone® technology

  • Secures against software-only "hack attacks" and most low budget hardware "shack attacks"
  • Delivers two "virtual" cores with deep separating of context & data.
    • S/W and JTAG attacks can not enter secure domain
  • TrustZone: two virtualized CPUs in one
    • CPU MHz/resources are dynamically shared between according to demands
    • The two isolated domains are implemented in the same machine with no duplication of HW
    • Simpler and more flexible platform designs, lower costs and high power/performance efficiency

Cortex Alternative

The Cortex™-A5 processor is a related follow-on product to the ARM1176. The Cortex-A5 processor offers similar speed to ARM11™ processors, at lower power and smaller die area, with the ARMv7 benefits of NEON™, and TrustZone®, as well as a more advanced AMBA® AXI™ bus. Cutting edge new SoC designs for are starting now based on the ARM Cortex-A5 processor, however some SoC designs are still starting with ARM1176 processor where cost and minimal risk are important considerations.

System IP

The ARM1176 processor is commonly integrated with many other IP blocks to optimize the SoC for performance, power, and security.

System IP components are essential for building complex system on chips and by utilizing System IP components developers can significantly reduce development and validation cycles, saving cost and reducing time to market.

Description AMBA Bus System IP Components
Advanced AMBA 3 Interconnect IP AXI NIC-301, PL301
DMA Controller AXI DMA-330 , PL330
Level 2 Cache Controller AXI L2C-310 , PL310
Dynamic Memory Controller AXI DMC-340 , PL340
DDR2 Dynamic Memory Controller AXI DMC-342
Static Memory Controller AXI SMC-35x , PL35x
TrustZone Address Space Controller AXI PL380
CoreSight™ Design Kit ATB CDK-11

Media Processors
The Mali™ family of products combine to provide the complete graphics stack for all embedded graphics needs, enabling device manufacturers and content developers to deliver the highest quality, cutting edge graphics solutions across the broadest range of consumer devices.
Mali-200 GPU High performance graphical processor providing advanced 2D and 3D acceleration. Supports OpenGL ES 2.0
Mali-55 GPU Small, OpenGL ES 1.0 capable GPU

Physical IP
ARM® Physical IP Platforms deliver process optimised IP, for up to 1 GHz processor implementations of the ARM11 in G processes at 65nm and below, and up to 500 MHz implementations in LP nodes 65 nm and below. ARM Physical IP includes Logic Libraries, Embedded Memory, Interface Libraries, and High Speed Interface components for the following nodes relevant to ARM11.
Standard Cell Logic Libraries Available in a variety of different architectures ARM Standard Cell Libraries support a wide performance range for all types of SoC designs. Designers can choose between different libraries and optimize their designs for speed, power and/or area
Memory Compilers and Registers A broad array of silicon proven SRAM, Register File and ROM memory compilers for all types of SoC designs ranging from performance critical to cost sensitive and low power applications.
Interface Libraries A broad portfolio of silicon-proven Interface IP designed to meet varying system architectures and standards. General Purpose I/O, Specialty I/O, High Speed DDR and Serial Interfaces are optimized to deliver high data throughput performance with low pin counts.
Process Nodes for ARM11
  • TSMC 65 nm Technology
  • GLOBALFOUNDRIES 65 nm Technology
  • TSMC 40 nm Technology

Tools Support

All ARM processors are supported by the ARM RealView® portfolio of development tools, as well as a wide range of third party tools, operating system and EDA vendors. ARM RealView tools are unique in their ability to provide solutions that span the complete development process from concept to final product deployment.


 
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