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参数资料
| 型号： | ADV202BBCZ-150 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 19/40页 |
| 文件大小： | 0K |
| 描述： | IC VIDEO CODEC JPEG2000 144CSBGA |
| 标准包装： | 1 |
| 类型： | JPEG2000 视频编解码器 |
| 分辨率（位）： | 16 b |
| 三角积分调变： | 无 |
| 电压 - 电源，模拟： | 1.5V，3.3V |
| 电压 - 电源，数字： | 1.5V，3.3V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 144-BGA，CSPBGA |
| 供应商设备封装： | 144-CSPBGA（13x13） |
| 包装： | 托盘 |
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ADV202
Data Sheet
Rev. D | Page 26 of 40
THEORY OF OPERATION
The input video or pixel data is passed on to the ADV202’s pixel
interface, where samples are de-interleaved and passed on to the
wavelet engine, which decomposes each tile or frame into
subbands using the 5/3 or 9/7 filters. The resulting wavelet
coefficients are then written to internal memory. Next, the
entropy codecs code the image data so it conforms to the
JPEG2000 standard. An internal DMA provides high
bandwidth memory-to-memory transfers, as well as high
performance transfers between functional blocks and memory.
WAVELET ENGINE
The ADV202 provides a dedicated wavelet transform processor
based on Analog Devices’ proven and patented SURF
technology. This processor can perform up to six wavelet
decomposition levels on a tile. In encode mode, the wavelet
transform processor takes in uncompressed samples, performs
the wavelet transform and quantization, and writes the wavelet
coefficients in all frequency subbands to internal memory. Each
of these subbands is then further broken down into code blocks.
The code-block dimensions can be user-defined and are used
by the wavelet transform processor to organize the wavelet
coefficients into code blocks when writing to internal memory.
Each completed code block is then entropy coded by one of the
entropy codecs.
In decode mode, wavelet coefficients are read from internal
memory and recomposed into uncompressed samples.
ENTROPY CODECS
The entropy codec block performs context modeling and
arithmetic coding on a code block of the wavelet coefficients.
Additionally, this block performs the distortion metric
calculations during compression that are required for optimal
rate and distortion performance. Because the entropy coding
process is the most computationally intensive operation in the
JPEG2000 compression process, three dedicated hardware
entropy codecs are provided on the ADV202.
EMBEDDED PROCESSOR SYSTEM
The ADV202 incorporates an embedded 32-bit RISC processor.
This processor is used for configuration, control, and manage-
ment of the dedicated hardware functions, as well as for parsing
and generating the JPEG2000 code stream. The processor
system includes memory for both program and data memory,
an interrupt controller, standard bus interfaces, and other
hardware functions such as timers and counters.
MEMORY SYSTEM
The memory system’s main function is to manage wavelet
coefficient data, interim code-block attribute data, and
temporary work space for creating, parsing, and storing the
JPEG2000 code stream. The memory system can also be used
for program and data memory for the embedded processor.
INTERNAL DMA ENGINE
The internal DMA engine provides high bandwidth memory-
to-memory transfers, as well as high performance transfers
between memory and functional blocks. This function is critical
for high speed generation and parsing the code stream.
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相关代理商/技术参数 |
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| ADV202BBCZ-157 | 制造商:Analog Devices 功能描述: |
| ADV202BBCZRL-115 | 功能描述:IC CODEC VIDEO 115MHZ 121CSPBGA RoHS:是 类别:集成电路 (IC) >> 接口 - 编解码器 系列:- 标准包装:2,500 系列:- 类型:立体声音频 数据接口:串行 分辨率（位）:18 b ADC / DAC 数量:2 / 2 三角积分调变:是 S/N 比，标准 ADC / DAC (db):81.5 / 88 动态范围，标准 ADC / DAC (db):82 / 87.5 电压 - 电源，模拟:2.6 V ~ 3.3 V 电压 - 电源，数字:1.7 V ~ 3.3 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-WFQFN 裸露焊盘 供应商设备封装:48-TQFN-EP（7x7） 包装:带卷 (TR) |
| ADV202BBCZRL-150 | 功能描述:IC CODEC VIDEO 150MHZ 144CSPBGA RoHS:是 类别:集成电路 (IC) >> 接口 - 编解码器 系列:- 标准包装:2,500 系列:- 类型:立体声音频 数据接口:串行 分辨率（位）:18 b ADC / DAC 数量:2 / 2 三角积分调变:是 S/N 比，标准 ADC / DAC (db):81.5 / 88 动态范围，标准 ADC / DAC (db):82 / 87.5 电压 - 电源，模拟:2.6 V ~ 3.3 V 电压 - 电源，数字:1.7 V ~ 3.3 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-WFQFN 裸露焊盘 供应商设备封装:48-TQFN-EP（7x7） 包装:带卷 (TR) |
| ADV202BCZ-150 | 制造商:Analog Devices 功能描述:JPEG 2000 CODEC CONVERTER, LEAD FREE - Trays |
| ADV202-HD-EB | 制造商:Analog Devices 功能描述: |
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