ADSP-21371:  High-Performance 32-bit Floating-Point SHARC Processor for Automotive Audio

The third generation of SHARC®­ Processors, which includes the ADSP-21375 and ADSP-21371, offers increased performance, audio and application-focused peripherals, and memory configurations capable ...More

ADSP-21371:  High-Performance 32-bit Floating-Point SHARC Processor for Automotive Audio

Product Description

The third generation of SHARC®­ Processors, which includes the ADSP-21375 and ADSP-21371, offers increased performance, audio and application-focused peripherals, and memory configurations capable of supporting surround-sound decoder algorithms. All devices are pin-compatible and completely code-compatible with other SHARC Processors such as the ADSP-21367 and ADSP-21369. These members of the SHARC Processor family are based on a single-instruction, multiple-data (SIMD) core, which supports both 32-bit fixed-point and 32-/40-bit floating-point arithmetic formats making them particularly suitable for high-performance audio applications.

The ADSP-21371 offers a high performance at a very low cost 266 MHz/1596 MFLOPs -- within the third generation SHARC Processor family. This level of performance makes the ADSP-21371 particularly well suited to address the increasing requirements of the professional and automotive audio market segments while maintaining a low cost. In addition to its higher core performance, the ADSP-21371 includes additional value-added peripherals such as an S/PDIF transmitter/receiver. The ADSP-21371 also provides a direct interface to synchronous SDRAMs with a 32-bit interface that operates at 133 MHz.

Third generation SHARC Processors also integrate application-specific peripherals designed to simplify hardware design, minimize design risks, and ultimately reduce time to market. Grouped together, and broadly named the Digital Audio Interface (DAI), these functional blocks may be connected to each other or to external pins via the software-programmable Signal Routing Unit (SRU). The SRU is an innovative architectural feature that enables complete and flexible routing amongst DAI blocks. Peripherals connected through the SRU include but are not limited to serial ports, SPI ports, and S/PDIF Tx/Rx.

Features

  • 266 MHz SIMD SHARC Core, capable of 1596 MFLOPS peak performance
  • 1Mbit SRAM ; 4 Mbits ROM embedded with industry-standard audio decode and post-processing coefficients
  • 32-bit DMA transfers at peripheral clock speed, in parallel with full-speed processor execution
  • 32-Bit wide external port provides glueless connection to both synchronous (SDRAM) and asynchronous memory devices
  • Digital Audio Interface (DAI) enabling user-definable access to peripherals including an S/P DIF Tx/Rx.
  • Direct execution from main memory
  • Delay-line DMA engine maintains circular buffers in external memory with tap/offset based reads
  • 8 serial ports (SPORTs) supporting I2S, left-justified sample pair, and TDM modes
  • 2 SPI-compatible ports supporting master and slave modes
  • 16 Pulse Width Modulation (PWM) channels
  • 3 full-featured timers
  • 208-lead LQFP E_Pad package: commercial and industrial temperature ranges

Diagrams

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ADSP-21371 Diagram
Functional Block Diagram for ADSP-21371

Markets & Applications

  • Automotive Audio
  • Professional Audio
  • Industrial and Instrumentation
  • Consumer AVR
  • Digital Audio Amplifiers

Specifications

Clock Speed (MHz) 266MHz
MMACs 532
MFLOPs 1596
On-Chip SRAM (Mbits) 1Mbit
Serial Ports 8
Core Voltage (V) 1.2V
DAI X
Package LQFP
Pricing, Packaging & Availability

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Pin Count
Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

Temperature Range
This is the acceptable operating range of the device. The various ranges specified are as follows:
  • Commercial: 0 to +70 degrees Celsius
  • Military : -55 to +125 degrees Celsius
  • Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
  • Automotive: -40 to +125 degrees Celsius
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*The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
**Sample availability may be better than production availability. Please enter samples iinto your cart to check sample availability.

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