ADSP-BF523/BF525/BF527 Blackfin 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-BF527 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 processor from a personal computer (PC) is achieved through a USB port or an external JTAG emulator. The USB interface provides unrestricted access to the ADSP-BF527 processor and evaluation board peripherals. Analog Devices JTAG emulators offer faster communication between the host PC and target hardware. Analog Devices carries a wide range of in-circuit emulation products.
The ADSP-BF527 EZ-KIT Lite provides example programs to demonstrate the evaluation board capabilities.
ADSP-BF527 EZ-KIT Lite评估板主要特性:
• Analog Devices ADSP-BF527 Blackfin processor
• Core performance up to 600 MHz
• External bus performance up to 133 MHz
• 289-pin 0.5 mm pitch mini-BGA package
• 25 MHz oscillator
• Synchronous dynamic random access memory (SDRAM)
• Micron MT48LC32M16A2TG – 64 MB (8M x 16 bits x 4 banks)
• Parallel flash memory
• ST Micro M29W320EB – 32 Mb (2M x 16 bits)
• NAND flash memory
• Numonyx NAND04 – 4 Gb
• SPI flash memory
• ST Micro M25P16 – 16 Mb
• Internal audio codec
• Low-power audio codec
• One stereo LINE OUT jack
• One input MIC jack
• One input stereo LINE IN jack
• TFT LCD display with touchscreen
• Sharp LQ035Q1DH02 320 x 240 3.5’’ touchscreen LCD
• Analog Devices AD7879-1 four-wire touchscreen controller
• Ethernet interface
• SMSC LAN8700 PHY device
• 10-BaseT and 100-BaseTX Ethernet controller
• Auto-MDIX
• Keypad
• Analog Devices ADP5520 keypad controller
• ACT components– 4 x 4 keypad assembly
• Thumbwheel
• CTS Corp rotary encoder
• Universal asynchronous receiver/transmitter (UART)
• ADM3202 RS-232 line driver/receiver
• DB9 female connector
• LEDs
• Ten LEDs: one power (green), one board reset (red), three general-purpose (yellow), one USB monitor (amber), PHY link (yellow), PHY activity (green), keypad controller (red), and FPGA done (yellow)
• Push buttons
• Three push buttons: one reset, two programmable flags with debounce logic
• Expansion interface
• Provides access to all ADSP-BF527 processor signals
• Other features
• JTAG ICE 14-pin header
• USB OTG connector
• HOST interface connector
• Power measurement jumpers
• PPI IDC connector
• SPORT0 and SPORT1 IDC connectors
• TWI, SPI, timers, and UART0 IDC connectors
The ADSP-BF527 EZ-KIT Lite® provides developers with a cost-effective method for initial evaluation of the ADSP-BF527 Blackfin® Processors via a USB-based, PC-hosted tool set. With this EZ-KIT Lite, users can learn more about the Analog Devices (ADI) ADSP-BF527 hardware and software development, and quickly prototype a wide range of applications.
Blackfin 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 EZ-KIT Lite ships with with a landscape, Low Power QVGA Touch Screen LCD panel, a set of Stereo Headphones and all of the necessary supplemental cables (USB, Ethernet, etc.).
图2.ADSP-BF527 EZ-KIT Lite评估板外形图
ADSP-BF527 EZ-KIT Lite评估板主要特性:
ADSP-BF527 Processor: 289 Ball mBGA, 600MHz; LFBGA-SS2, 12mmX12mm/0.5 pitch, 4L, (A02)
SDRAM: 64 MB, 32M x 16; Micron MT48LC32M16A2 3.3V
FLASH: 4 MB (2M x 16 ); Numonyx M29W320EB70ZE6E 3.3V
NAND FLASH: 4 Gb Numonyx NAND04; NAND04GW3B2B 3.3V
SPI FLASH: 16 Mb Numonyx M25P16-VMW6G 3.3V
Thumbwheel: CTS Corp, Rotary Encoder, 2 Bit Binary, CT2999-ND
boost电路 新人一枚，第一次自己做boost电路，结果却不怎么正确，
输入是9~15V，输出24V，输出电流大于1A，
测试结果却是不到20V，效率也很低，
下面是电感的波形，电路也在下面，求助各位高手 AKMAK7782双路音频信号处理解决方案AKM 公司的AK7782是集成24位5路ADC和SRC的双路音频信号处理器(DSP),同时还集成了8:2立体声输入选择器,取样速率转换器,速率高达96kHz,ADC取样频率从7.35kHz 到96k 一种雷达防追尾预警系统工作原理 追尾碰撞是目前我国高速公路各类事故中较多的一类事故，占事故总数的33%左右。根据对沈大、合宁、广深、西临等高速公路交通事故的统计分析，交通事故类型如表1所示。有关研究表明，若驾驶员能够提早1 秒意识
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