November 14, 2011

Blackfin Digital Signal Processor (Dsp) - An Introduction

The Blackfin Digital Signal Processor (Dsp) is a High performance Fixed Point Processor that is artificial by Analog Devices, Inc. It has a 32 Bit Reduced schooling Set (Risc) Processor Core, with an external 16 Bit Data Bus. A good Pc analogy to draw upon here would be the Data Bus configuration of the Intel 80386Sx chip.

Blackfin Dsp's have a component designation of Adsp-Bf5xx, where xx is a elect number ranging in the middle of 12 and 61. Most devices within the range have a singular Dsp Core, any way the Adsp-Bf561 is the exception to this rule (Dual Core). Wrapped nearby the Core processor are a elect option of Peripherals. The component designation determines the features from the following possibilities: Universal Asynchronous Receiver / Transmitter (Uart), Serial Periheral Interface (Spi), general Purpose Input yield (Gpio), Synchronous Programmable Serial Port (Sport), Parallel Peripheral Interface (Ppi), Timers, Analog to Digital Converter (Adc), Audio Coder / Decoder (Codec), Controller Area Network (Can), Universal Serial Bus (Usb), Ethernet, Two Wire Interface (Twi), Pulse Width Modulator (Pwm), Direct Memory entrance (Dma), Real Time Clock (Rtc), Watchdog Timer, Joint Test activity Group (Jtag), and Flash Memory.

Optical Encoder Wiring

The Dsp offerings run at speeds ranging from 200 Mhz to over 600 Mhz. The executed instructions are variable distance (16,32,64 bits) with schooling completion times of up to three instructions per clock cycle. This translates to performances nearby 1800 Mips, any way this is highly application dependant.

For Electronic product improvement it is foremost that the components are offered in Quad Flat Packs (Qfp), which they are! The other containers option is Ball Grid Array (Bga), any way this makes the product more difficult to found and Test, in all facets of its life cycle. Bga devices require exact placement with reflow, and are highly difficult to validate the interconnections except through the use of X-ray inspection, Bga optical inspection (Ersascope), or through Boundary Scan techniques. Where ever possible, pick the 176 pin Lqfp holder as a preference for any improvement work. The Adsp-Bf531 or Adsp-Bf532 would be good choices, as a basis for most applications!

Blackfin Digital Signal Processor (Dsp) - An Introduction

Variable Speed Drives Gauge Absolute Pressure Screw Compressor Troubleshooting