ADI ADSP－21469 EZ-KIT高效评估方案

2012年03月02日 12:30 发布者：1770309616

ADI公司的ADSP-21469 EZ-KIT Lite为工程师提供低成本高效益的ADSP-21469 SHARC处理器评估手段,包括评估板，一套Visual DSP++®开发和调试环境的评估套件(C/C++编译器、汇编器和连接器).主要用在消费电子的音/视频接收机,家庭影院系统,专业音响设备以及工业与仪器仪表等.本文介绍了ADSP-21467/69主要特性,方框图, ADSP-21469 EZ- kit评估系统主要特性,架构图,电路图和材料清单.

ADSP-21469: High Performance Fourth Generation DSP

The ADSP-21467/ADSP-21469 SHARC® processors are members of the SIMD SHARC family of DSPs that feature Analog Devices’ Super Harvard Architecture. The processors are source code compatible with the ADSP-2126x, ADSP-2136x, ADSP-2137x, and ADSP-2116x DSPs, as well as with first generation ADSP-2106x SHARC processors in SISD (singleinstruction, single-data) mode. These 32-bit/40-bit floatingpoint processors are optimized for high performance audio applications with their large on-chip SRAM, multiple internal buses to eliminate I/O bottlenecks, and an innovative digital applications/peripheral interfaces (DAI/DPI).

ADSP-21467/ADSP-21469主要特性:

High performance 32-bit/40-bit floating-point processor optimized for high performance audio processing

Single-instruction, multiple-data (SIMD) computational architecture

5 Mbits of on-chip RAM, 4 Mbits of on-chip ROM

Up to 450 MHz operating frequency

Qualified for automotive applications,

Code compatible with all other members of the SHARC family

Available with unique audiocentric peripherals such as the digital applications interface, DTCP (digital transmission content protection protocol), serial ports, precision clock generators, S/PDIF transceiver, asynchronous sample rate converters, input data port, and more

图1.ADSP-21467/ADSP-21469方框图

图2.SHARC核方框图

ADSP-21469 EZ- kit评估系统

ADSP-21469 EZ-BoardTM Evaluation System

SHARC processors are based on a 32-bit super Harvard architecture that includes a unique memory architecture comprised of two large on-chip, dual-ported SRAM blocks coupled with a sophisticated IO processor, which gives a SHARC processor the bandwidth for sustained high-speed computations. SHARC processors represents today’s de facto standard for floating-point processing, targeted toward premium audio applications.

The ADSP-21469 EZ-KIT Lite® provides developers with a cost-effective method for initial evaluation of the ADSP-2146x SHARC® Processors via a USB-based, PC-hosted tool set. With this EZ-KIT Lite, users can learn more about the Analog Devices (ADI) ADSP-21469 hardware and software development, and quickly prototype a wide range of applications.

The EZ-KIT Lite includes an ADSP-21469 SHARC Processor desktop evaluation board along with an evaluation suite of the VisualDSP++® development and debugging environment, including the C/C++ compiler, assembler, and linker. The evaluation suite of VisualDSP++ is designed to be used with the EZ-KIT Lite only.

The evaluation board is designed to be used in conjunction with the VisualDSP++® development environment to test the capabilities of the ADSP-21469 SHARC processors. The VisualDSP++ development environment aids advanced application code development and debug, such as:

• Create, compile, assemble, and link application programs written in C++, C, and ADSP-21469 assembly

• Load, run, step, halt, and set breakpoints in application programs

• Read and write data and program memory

• Read and write core and peripheral registers

• Plot memory

Access to the ADSP-21469 processor from a personal computer (PC) is achieved through a USB port or an external JTAG emulator. The USB interface of the standalone debug agent gives unrestricted access to the ADSP-21469 processor and evaluation board’s peripherals. Analog Devices JTAG emulators offer faster communication between the host PC and target hardware.

ADSP-21469 EZ- kit评估系统主要特性:

The board features:

• Analog Devices ADSP-21469 SHARC processor

􀁄Core performance up to 450 MHz

􀁄324-pin PBGA package

􀁄25 MHz oscillator

􀁄5 Mb of internal RAM memory

• Double data rate synchronous dynamic random access memory(DDR2)

􀁄Micron MT47H64M16HR-3 – 128 MB (64M x 16 bits)

􀁄Performance of up to 225 MHz clock rate

• Parallel flash memory

􀁄Numonyx M29W320EB – 4 MB (4M x 8 bits)

• SPI flash memory

􀁄Numonyx M25P16 – 16 Mb

• Analog audio interface

􀁄Analog Devices AD1939 audio codec

􀁄Eight DAC outputs for four channels of stereo output

􀁄Four ADC inputs for two channels of stereo input

􀁄Two DB25 connectors for differential inputs/outputs

􀁄3.5 mm headphone jack with volume control connected to one of the stereo outputs

􀁄Supports all eight DACs and four ADCs in TDM and I2S modes at 48 KHz, 96 KHz, and 192 KHz sample rates

• Digital audio interface (S/PDIF)

• RCA phono jack output

• RCA phono jack input

• Link port interface

􀁄Two Samtec ERF8/ERM8 series connectors

􀁄Link ports performance up to 166 MHz

􀁄Two EZ-Boards can mate with no cables required

• Temperature monitor

􀁄ON Semiconductor ADM1032

􀁄Local and remote temperature sensing

• Universal asynchronous receiver/transmitter (UART)

􀁄ADM3202 RS-232 line driver/receiver

􀁄DB9 female connector

• LEDs

􀁄Eleven LEDs: one board reset (red), eight general-purpose (amber), one temperature sensor LED (amber), and one power (green)

• Push buttons

􀁄Five push buttons: one reset, two connected to DAI, two connected to FLAG pins of the processor

• Expansion interface II

􀁄Next generation of the expansion interface design, provides access to most of the ADSP-21469 processor signals

• Land grid array

􀁄Easy probing of all port pins and most asynchronous memory interface (AMI) signals

• Other features

􀁄JTAG ICE 14-pin header

􀁄SHARC power measurement jumpers