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| 型號： | EVAL-ADAU1446EBZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 54/92頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVAL FOR ADAU1446 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | SigmaDSP® |
| 主要目的： | 音頻，音頻處理 |
| 嵌入式： | 是，DSP |
| 已用 IC / 零件： | ADAU1446 |
| 主要屬性： | 單芯片多通道 28/56 位音頻 DSP |
| 次要屬性： | I²C & SPI 接口 |
| 已供物品： | 板，軟件 |
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ADAU1445/ADAU1446
Rev. A | Page 58 of 92
DSP CORE
The DSP core performs calculations on audio data as specified
by the instruction codes stored in program RAM. Because
SigmaStudio generates the instructions, it is not necessary to
have a detailed knowledge of the DSP core to use the SigmaDSP,
but a brief description is provided in this section.
Architecture
The core consists of a simple 28-/56-bit multiply-accumulate
unit (MAC) with two sources: a data source and a coefficient
source. The data source can come from the data RAM, a ROM
table of commonly used constant values, or the audio inputs to
the core. The coefficient source can come from the parameter
RAM, a ROM table of commonly used constant values, or the
audio inputs to the core. The two sources are multiplied in a
28-bit fixed-point multiplier, and then the signal is input to the
56-bit adder; the result is usually stored in one of three 56-bit
accumulator registers. The accumulators can be output from the
core (in 28-bit format) or can optionally be written back into
the data or parameter RAMs.
Features
The SigmaDSP core is designed specifically for audio processing
and therefore includes several features intended for maximizing
efficiency. These include hardware decibel conversion and audio-
specific ROM constants.
Signal Processing
The ADAU1445/ADAU1446 are designed to provide all signal
processing functions commonly used in stereo or multichannel
playback systems. The signal processing flow is designed using
SigmaStudio software from Analog Devices. This software allows
graphical entry and real-time control of all signal processing
functions.
Many of the signal processing functions are coded using full,
56-bit, double-precision arithmetic. The serial port input and
output word lengths are 24 bits, but four extra headroom bits
are used in the processor to allow internal gains of up to 24 dB
without clipping. Additional gains can be achieved by initially
scaling down the input signal in the DSP signal flow.
COEFFICIENT SOURCE
(PARAMETER RAM,
ROM CONSTANTS,
INPUTS, ...)
DATA OPERATIONS
(ACCUMULATORS (3), dB CONVERSION,
BIT OPERATORS, BIT SHIFTER, ...)
DATA SOURCE
(DATA RAM,
ROM CONSTANTS,
INPUTS, ...)
OUTPUTS
TRUNCATOR
56
28
56
07
69
6-
05
2
Figure 51. Simplified Core Architecture
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EVAL-ADAU1590EBZ | 制造商:Analog Devices 功能描述:EVAL BOARD - Bulk |
| EVAL-ADAU1592EBZ | 制造商:Analog Devices 功能描述:Evaluation Board For ADAU1592 制造商:Analog Devices 功能描述:EVAL BOARD - Boxed Product (Development Kits) |
| EVAL-ADAU1701EB | 制造商:Analog Devices 功能描述:EVAL BOARD FOR SIGMADSP AUDIO PROCESSOR - Bulk |
| EVAL-ADAU1701EBZ | 制造商:Analog Devices 功能描述:EVAL BOARD - Bulk |
| EVAL-ADAU1701MINIZ | 功能描述:BOARD EVAL SIGMADSP AUD ADAU1701 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 通用嵌入式開發(fā)板和套件（MCU、DSP、FPGA、CPLD等） 系列:SigmaDSP® 產(chǎn)品培訓(xùn)模塊:Blackfin® Processor Core Architecture Overview Blackfin® Device Drivers Blackfin® Optimizations for Performance and Power Consumption Blackfin® System Services 特色產(chǎn)品:Blackfin? BF50x Series Processors 標(biāo)準(zhǔn)包裝:1 系列:Blackfin® 類型:DSP 適用于相關(guān)產(chǎn)品:ADSP-BF548 所含物品:板，軟件，4x4 鍵盤，光學(xué)撥輪，QVGA 觸摸屏 LCD 和 40G 硬盤 配用:ADZS-BFBLUET-EZEXT-ND - EZ-EXTENDER DAUGHTERBOARDADZS-BFLLCD-EZEXT-ND - BOARD EXT LANDSCAP LCD INTERFACE 相關(guān)產(chǎn)品:ADSP-BF542BBCZ-4A-ND - IC DSP 16BIT 400MHZ 400CSBGAADSP-BF544MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF542MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF542KBCZ-6A-ND - IC DSP 16BIT 600MHZ 400CSBGAADSP-BF547MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF548BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF547BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF544BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF542BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGA |
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