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ADI公司的ADSP-21478和ADSP-21479 是SHARC數字信號處理器(DSP),采用超級哈佛架構,是32位/40位浮點處理器,具有容量大的片上SRAM,多個內部總線,以及創新的數字應用接口(DAI),適合用于工業控制,儀器儀器,汽車音頻,醫療電子等領域.本文介紹了ADSP-21479功能方框圖, SHARC核方框圖,以及評估系統ADSP-21479 EZ-KIT Lite®主要特性,評估板方框圖,電路圖,材料清單和PCB元件布局圖. The ADSP-21478 and ADSP-21479 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, ADSP-2146x, and ADSP-2116x DSPs as well as with first generation ADSP-2106x SHARC processors in SISD (single-instruction, single-data) mode. These processors are 32-bit/40-bit floating-point processors optimized for high performance audio applications with a large on-chip SRAM, multiple internal buses to eliminate I/O bottlenecks, and an innovative digital applications interface (DAI). Markets & Applications Industrial Control and Instrumentation Automotive Audio Medical Applications 
圖1.ADSP-21479功能方框圖
圖2.ADSP-21479 SHARC核方框圖 ADSP-21479 EZ-BoardTM評估系統ADSP-21479 EZ-KIT Lite® The evaluation board is designed to be used in conjunction with the VisualDSP++® development environment to test the capabilities of the ADSP-21479 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 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 of the standalone debug agent gives unrestricted access to the processor and evaluation board’s peripherals. Analog Devices JTAG emulators offer faster communication between the host PC and target hardware.
圖3.ADSP-21479 EZ-KIT Lite評估板外形圖 ADSP-21479 EZ-KIT Lite評估板主要特性: • Analog Devices ADSP-21479 SHARC processor • Core performance up to 266 MHz • 196-pin BGA package • 16.625 MHz CLKIN oscillator • 5 Mb of internal RAM memory • Parallel flash memory • Numonyx M29W320EB – 4 MB (4M x 8 bits) • SDRAM memory • Micron MT48LC16M16A2P-6A – 16 Mbx x 16 bits (256 Mb or 32 MB) • Asynchronous memory (SRAM) • ISSI IS61WV102416BLL-10TLI – 1M x 16 bits (2 MB) • SPI flash memory • Numonyx M25P16 – 16 Mb • Analog audio interface • Analog Devices AD1939 audio codec • 4 x 2 RCA phono jack for eight channels of stereo output • 4 x 1 RCA phono jack for four channel 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 • Universal asynchronous receiver/transmitter (UART) • ADM3202 RS-232 line driver/receiver • DB9 female connector • LEDs • Ten LEDs: one board reset (red), eight general-purpose (amber), and one power (green) • Push buttons • Five push buttons: one reset, two connected to the DAI, and two connected to FLAG pins of the processor • Expansion interface II • Next generation of the expansion interface design, provides access to most of the processor signals • Power supply • 5V @ 3.6 Amps • Other features • Watch dog timer (WDT) system reset implementation • Real-time clock (RTC) • Shift register (SR) • SHARC power measurement jumpers • JTAG ICE 14-pin header • USB cable
圖4.ADSP-21479 EZ-KIT Lite評估板方框圖
圖5.ADSP-21479 EZ-KIT Lite評估板電路圖(1)
圖6.ADSP-21479 EZ-KIT Lite評估板電路圖(2)
圖7.ADSP-21479 EZ-KIT Lite評估板電路圖(3)
圖8.ADSP-21479 EZ-KIT Lite評估板電路圖(4)
圖9.ADSP-21479 EZ-KIT Lite評估板電路圖(5)
圖10.ADSP-21479 EZ-KIT Lite評估板電路圖(6)
圖11.ADSP-21479 EZ-KIT Lite評估板電路圖(7)
圖12.ADSP-21479 EZ-KIT Lite評估板電路圖(8)
圖13.ADSP-21479 EZ-KIT Lite評估板電路圖(9)
圖14.ADSP-21479 EZ-KIT Lite評估板電路圖(10)
圖15.ADSP-21479 EZ-KIT Lite評估板電路圖(11)
圖16.ADSP-21479 EZ-KIT Lite評估板電路圖(12)
圖17.ADSP-21479 EZ-KIT Lite評估板電路圖(13)
圖18.ADSP-21479 EZ-KIT Lite評估板電路圖(14)
圖19.ADSP-21479 EZ-KIT Lite評估板電路圖(15)
圖20.ADSP-21479 EZ-KIT Lite評估板電路圖(16) ADSP-21479 EZ-KIT Lite評估板材料清單:
圖21.ADSP-21479 EZ-KIT Lite評估板元件布局圖:頂層
圖22.ADSP-21479 EZ-KIT Lite評估板元件布局圖:底層 詳情請見: 
ADSP-21478_21479[2].pdf
(1.8 MB)
ADSP_21479_EZ_Board_Manual_Rev_1_0_April_2010[2].pdf
(914.09 KB)
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