Read about ‘ADI: Blackfin Processor Programming Reference For ADSP-BF5xx Blackfin Processors’ on elementcom. ADI: Blackfin. single line at the programmer’s discretion, provided each instruction ends with a .. Blackfin DSP Hardware Reference for details about the ASTAT register. The Blackfin is a family of or bit microprocessors developed, manufactured and This article relies too much on references to primary sources . Blackfin processors use a bit RISC microcontroller programming model on a SIMD.
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The Blackfin is a family of or bit microprocessors blackkfin, manufactured and marketed by Analog Devices. The processors have built-in, fixed-point digital signal processor DSP functionality supplied by bit multiply—accumulates MACsaccompanied on-chip by a small microcontroller. The architecture was announced in Decemberand first demonstrated at the Embedded Systems Conference in June, The Blackfin architecture encompasses various CPU models, each targeting particular applications.
What is regarded as the Blackfin “core” is contextually dependent. For some applications, the DSP features are central. This allows the processor to execute up to three instructions per clock cycle, depending on the level of optimization performed by the compiler or programmer.
Two nested zero-overhead loops and four circular buffer DAGs data address generators are designed to assist in writing efficient code requiring fewer instructions.
Blackfin Processors: Manuals
Other applications use the RISC features, which include memory protection, different operating modes user, kernel programmming, single-cycle opcodesdata and instruction caches, and instructions for bit test, byte, word, or integer accesses and a variety of on-chip peripherals.
The ISA is blakfin for a high level of expressivenessallowing the assembly programmer or compiler to optimize an algorithm for the hardware features present. The Blackfin uses a byte-addressableflat memory map. Internal L1 memory, internal L2 memory, external memory and all memory-mapped control registers reside in this bit address space, so that from a programming point of view, the Blackfin has a Von Neumann architecture.
Blackfin Processors: Manuals | Analog Devices
Instruction memory and data memory are independent and connect to the core via dedicated memory blackfib, designed for higher sustained data rates between the core and L1 prigramming. This memory runs slower than the core clock speed. Code and data can be mixed in L2.
They can support hundreds of megabytes of memory in the external memory space. Coupled with the core and memory system is a DMA engine that can operate between any of its peripherals and main or external memory. The processors typically have a dedicated DMA channel for each peripheral, which is designed for higher throughput for applications that can use it, such as real-time standard-definition D1 video encoding and decoding.
These features enable operating systems. The MPU provides protection and caching strategies across the entire memory space. Blackfin supports three run-time modes: In supervisor mode, all processor resources are accessible from the running process.
However, when in user mode, system resources and regions of memory can be protected with the help of the MPU. If a thread crashes or attempts to access a protected resource memory, peripheral, etc. The official guidance from ADI on how to use the Blackfin in non-OS environments referenfe to reserve the lowest-priority interrupt for general-purpose code so that all software is run in supervisor space.
Blackfin uses a variable-length RISC -like instruction set consisting of blackfih, and bit instructions. Commonly used control instructions are encoded as bit opcodes while complex DSP and mathematically intensive functions are encoded as and bit opcodes.
This variable length opcode encoding is designed for code density equivalence to modern microprocessor architectures. The Blackfin instruction set contains media-processing extensions to help accelerate pixel-processing operations commonly used in video compression and image compression and decompression algorithms.
Blackfin processors contain an array of connectivity peripherals, depending on the specific processor:.
All of the peripheral control registers are memory-mapped in the normal address space. ADI provides its own software development toolchains. From Wikipedia, the free encyclopedia. This article is about the DSP microprocessor.
Blackfin – Wikipedia
For other uses, see Blackfin disambiguation. This article relies too much on references to primary sources. Please improve this by adding secondary or tertiary sources. December Learn how and when to remove this template message. This section does not cite any sources. Please help improve this section by adding blacfkin to reliable sources. Unsourced material may be challenged and removed.
Archived from the original on April 17, Retrieved April 9, refsrence Archived from the original on Reduced instruction set computer RISC architectures. Retrieved from ” https: Computer-related introductions in Instruction set architectures Microcontrollers Digital signal processors.