| 主题: Blackfin 处理器：嵌入式多媒体处理器创新体系架构 |
| 在线问答: |
| [问：cvbliu] |
请问Blackfin 处理器与其他公司的同类产品相比有什么优势？ |
| [答：Rick] |
Balckfin have intel MSA struction . It have DSP and MCU"s benifit. And Blackfin is also fit in video application!
Any more questions or wanting more detail information about Blackfin pls visit our websit or mail to china.dsp@analog.com |
[2003-12-18 10:45:45] |
| [问：cvbliu] |
我开发过218x和2106x系列的DSP，转入到Blackfin的开发容易吗？ |
| [答：Chuan] |
very easy! ADI DSP is very easy to program, especially the asm lauguage is easy to understand. although the blackfin asm not compatible with 218x and 2106x, but also you can understand the blackfin when you met it. |
[2003-12-18 10:46:12] |
| [问：elvenyh] |
我的平台是：EZ-ICE 218x EZ-KIT（2189） VisualDSP++3.0
target:ADSP2183
我自己的板老连不上，不知道为何？能给我一份基本系统的原理图吗？
best regards! |
| [答：Rick] |
Ok, You should find the sch of EZkit in it"s EZkit manuals. you could download this manual in our website. |
[2003-12-18 10:49:08] |
| [问：blackhorse] |
从Blackfin的体系机构看，支持操作系统，目前已经在Blackfin上稳定运行的操作系统有哪些？在上面有什么成功的商业应用？ |
| [答：Chuan] |
Yes, we support OS.
there are many RTOS that support Blackfin now. such as VxWorks, uClinux, ThreadX, Nuclears, DSPOS, uCOS. |
[2003-12-18 10:49:18] |
| [问：EPORD3] |
the BLACKfin ADSP532/ADSP532 performance ,could it run MPEG II/JPEG/ decoder workign as Multi-media player?
|
| [答：Singer] |
Yes, ADSP-BF532 could run MPEG2/JPEG decoder. It can also run MPEG4 and WMV decoder. |
[2003-12-18 10:51:17] |
| [问：hnstar] |
Blackfin 处理器能够应用在环境比较恶劣的地方吗？也就是说它的抗干扰性如何？ |
| [答：Rick] |
Some type of our Blackfin could used in a temperature of -40~85.detail information about it you can refer to it"s datasheet. |
[2003-12-18 10:51:18] |
| [问：liusuo] |
请问在监控行业，硬件处理和软件处理最终会向哪方倾斜？ Blackfin 有哪些针对监控视频处理的特性。 与PHILIPS TRIMEDIA 比怎么样？
你认为TI的呢？ |
| [答：Chuan] |
it will go to software solution, because it is flexible both in Architecture and system design.
Blackfin has special instruction for video.
we have better performance/price ratio compare to others. |
[2003-12-18 10:52:41] |
| [问：hqahqahqa] |
我有一套自己编写的数字语音识别程序，用c＋＋写的，如果改为c后，在Blackfin上实现方便吗？实时性如何？请指导，谢谢！ |
| [答：Rick] |
How about the realtime of your code depend on what your code is.
In fact our visualDSP support C++ too.
But efficient of C program will higher than that of C++ code. |
[2003-12-18 10:54:37] |
| [问：lilyliu] |
1。请问在VOIP中的ADI机会？
2。在PHS Base Station 中推荐使用Blackfin还是Sharc系列？为什么？ |
| [答：Chuan] |
1. there are so many, just some example, for IP phone- use BF531. for IAD- use BF533 or AD6489.
2. we recommend to use Sharc, 21161, our customer has already begin to do this. if you call us, we can explain to you in detail. 800-810-1742 |
[2003-12-18 10:56:27] |
[问：ecnan
jing_EBY7E] |
两片DSP,通过LINK口相连，其中一片(DSP1)由FLASH boot,
另一片(DSP2)由DSP1通过LINK口boot,这种方法可以吗？
系统上电后boot 的具体过程是怎样的？
是把所有的程序代码都load到DSP1中，然后DSP1再把DSP2的
代码通过 LINK口boot写到DSP2中吗？ |
| [答：Singer] |
That method could work well. First load all the program into DSP1 and then by link port to DSP2. |
[2003-12-18 10:56:46] |
[问：ecnan
jing_EBY7E] |
请问,外部的flash是8位的，dsp的数据是32位的。 若flash的地址为900000h
对falsh内部地址5555h访问， 应该如何？
是访问905555h吗？ 谢谢！ |
| [答：Rick] |
I don"t know which type DSP do you use. in balckfin you can get the address by add the offset address to the base address. |
[2003-12-18 10:56:49] |
| [问：mengz] |
为什么数据总线只有16位，岂不是太窄了。
为什么不是32位？
请问设计者处于何种考虑？ |
| [答：Rick] |
Our Blackfin535 has 32bit EBIU. |
[2003-12-18 10:57:42] |
| [问：745622] |
完成1路MPEG4视频编码（352*288），同时完成网络传输等管理工作，应选用哪一款Blackfin处理器？
请推荐贵公司视频编解码处理方面的第三方合作伙伴。 |
| [答：Chuan] |
BF532 is enough to complete this.
we have many 3rd parties, contact us to let us know which city are you in so that we can select the 3rd party for your easy.
|
[2003-12-18 10:58:04] |
| [问：745622] |
有没有动态电源管理方面的软件开发的资料？例如API等 |
| [答：Rick] |
If you need Blackfin power managment example code you should email to china.dsp@analog.com |
[2003-12-18 10:59:37] |
| [问：xufeng5581] |
我们主要开发CMOS SENSOR应用，如数字相机，数字显微镜等。在此请教一下ADI有DSP+MCU的产品做这类的应用吗，就像TI的TMS320DM270这样的。 |
| [答：Chuan] |
the DSP+MCU architeture is difficult to use, because you need to program two kind of chips.
our blackfin is such an architeture that it combine the function both of the DSP and MCU in one core, it can finish the function better than DM270. |
[2003-12-18 11:01:06] |
| [问：qin] |
如何将自己的代码下载到flash中？
我的平台是：ez-ice 218x ez-kit（2189） visualdsp++3.0 |
| [答：Rick] |
Maybe you need to program flash driver by yourselves. Or program flash with external flash programmer! |
[2003-12-18 11:01:25] |
| [问：927209] |
what is the arm core of Blackfin? |
| [答：Chuan] |
Blackfin is not using arm core, it is joint developed by ADI and intel. |
[2003-12-18 11:02:25] |
[问：ecnanj
ing_EBY7E] |
请问在DSP的资料中endian怎么翻译，具体是什么意思啊？ |
| [答：Rick] |
It is a format of data storage ! |
[2003-12-18 11:02:57] |
| [问：745622] |
Blackfin 处理器是否有MMU，可使用何种OS支持，并有成功案例
|
| [答：Chuan] |
there is no MMU, but many OS can support Blackfin with little modification.
there are many successful case, such as uClinux, Nuclears, ThreadX, virturso and so on. |
[2003-12-18 11:03:49] |
| [问：32kmcu] |
VDSP++和JTAG线和调试软件一起就可以调试目标板？JTAG线制作简单吗？ |
| [答：Rick] |
To debug our DSP you must use our ICE. such as HPPCI, APEX ICE. |
[2003-12-18 11:04:17] |
| [问：peng-kai] |
Blackfin处理器是否有关于实时动态的传输远程图像的解决方案，谢谢。 |
| [答：Chuan] |
yes, we have a solution that can transfer the Realtime compressed image to internet and you can see the video anywhere. if you are interested in this, please contact us 800-810-1742 |
[2003-12-18 11:05:40] |
| [问：745622] |
如何切换工作方式？用的也是DVFS吗 |
| [答：Ksri] |
In Blackfin processor, there are a number of operational modes - viz, supervisor mode, user mode, emulation mode, sleep mode and reset mode. When the processor is powered on it is in reset mode and when reset is over it is in supervisor mode. Executing a RTS will cause it to go into user mode, but an interrupt again will bring it to supervisor mode.
You can use these modes in all the applications. I am not sure what the DVFS means, but if you can eloaborate and send us an email at dsp.support@analog.com, then we will answer in more detail |
[2003-12-18 11:06:47] |
| [问：lijplijp] |
Blackfin的指令系统有多少条指令？它与我们通用的DSP指令系统差别大吗？容易上手吗？ |
| [答：Rick] |
ADI assembly instruction is a algebra format . It is easy to use.
For detail infromation about instruction set you could refer to our balckfin instriction manual.
If you havn"t it you can download manual from our website. |
[2003-12-18 11:06:52] |
| [问：qin] |
请问：MR=MR+MX0*MY0(SS),里面的ss是什么东西??? |
| [答：Ksri] |
SS stands for signed and signed for both operands. This is needed because ADI DSPs can do both signed and unsigned operations and user needs to specify the type of input operands. For unsigned you can specify as UU |
[2003-12-18 11:07:30] |
| [问：samire] |
请介绍一下MPEG-4和MPEG-2的差别和应用范围. |
| [答：Chuan] |
you can see the difference about technology of the two in any book.
in application, MPEG4 has more compress rate than MPEG2 but need more computing ability. MPEG2 is now the format of HDTV, MPEG4 is now very popular in China. |
[2003-12-18 11:08:16] |
| [问：724457] |
在Blackfin上运行的RTOS都有什么？ |
| [答：Ksri] |
There are a number of RTOSs available in BF. ADI Supplies VDK that is free with VDSP tools. Apart from these, there are a numnber of other OSs like embedded linux, CMX etc.
For more details, you can contact at www.analog.com/blackfin |
[2003-12-18 11:08:49] |
| [问：lotusyan] |
我打算使用BF531进行开发，拿到的样片说BF532的，在532上开发的代码能下载到531上用吗？ |
| [答：Rick] |
As for BF531/2/3, their code and pins is compatibility |
[2003-12-18 11:08:52] |
| [问：yaojl] |
我想用BLACKFIN实现H263的编码算法，希望能够达到30FPS在CIF格式，请问我应该选择哪一款DSP |
| [答：Rick] |
You can do it based on BF532 very easy. |
[2003-12-18 11:10:09] |
| [问：32kmcu] |
EZ-KIT，HPPCI-ICE国内有代理吗？价格如何？你们最后说的 99美金的东西能详细说明吗？ |
| [答：Chuan] |
yes, please contact us for distributor 800-810-1742. we have special price now only for China.
the 99$ is the EZKit special price. you can see on our website www.analog.com |
[2003-12-18 11:10:09] |
| [问：wething] |
该处理器主要针对哪一类用户？相对于TI公司相对应的产品来说，有什么优势？ |
| [答：Ksri] |
BF has applications in low power handheld and video applications like video cameras, Digital Still camera, mobile phones, 3G terminals etc.
BF has 600MHz and very low power of around 280mW at 600MHz. It has video ALUs and single cycle MAC. On the other hand TI C55x has only 200MHz and hence is 3x slower than BF. Also TI has no video ALUs and hence poor for video |
[2003-12-18 11:10:21] |
| [问：leequng] |
blackfin支持linux吗? |
| [答：Chuan] |
Yes, uCLinx. if you want that, please contact with us 800-810-1742 |
[2003-12-18 11:10:45] |
| [问：lotusyan] |
我们以前购买的BF535系列的开发工具，BF533系列的开发板已经不同了，其它的开发工具有关不影响我们的开发吧 |
| [答：Rick] |
Our ICE can support all the family dsp . |
[2003-12-18 11:11:36] |
| [问：861745] |
Blackfin 是不是不支持硬件浮点运算？ |
| [答：Rick] |
Balckfin a fixed processor . our SHARC and TigerSHARC support floating operation. |
[2003-12-18 11:12:57] |
| [问：sky_hook] |
从TI5000系列转到Blackfin开发需要做哪些努力，另外Blackfin支持linux吗？ |
| [答：Chuan] |
it is very easy migrating from 5000 to blackfin because blackfin artecture is better to understand and easy to program. if you already know 5000 well, you just need to study the hard ware architecture.
yes, uClinux, we have it, if you want, contact us.
|
[2003-12-18 11:13:36] |
| [问：jinlt] |
ADI有没有计划推出具有PCI接口和PPI接口的blackfin，就像TriMedia和C64X一样的。现有的blackfin处理器不太适合做多路的DVR。 |
| [答：Chuan] |
yes, we have the plan. |
[2003-12-18 11:14:08] |
| [问：13823608335] |
在冬眠时，为维持RTC的正常走时需要3.3V的电源和100~200uA的电流，是吗？ |
| [答：Ksri] |
BF does not need so much voltage to support RTC. Infact BF can be put into lower voltage like around 0.8 volt etc and then put into sleep mode. This can be done through an internal voltage regulator. Naturally, the current drawn will also decrease. It is in the order of tens of micro amps and not in hunderds of microamps |
[2003-12-18 11:16:15] |
| [问：josephfu] |
我们公司正在开发一款有音频（MP3）和视频（mpeg4）功能的手持设备，以前用的是MOTOLORA的平台，想换成您们的平台，请提一些建议。谢谢！ |
| [答：Chuan] |
blackfin is a low power consuption part and very well fit for handheld devices. and Blackfin has super power for dealing with MPEG4 and MP3. and we also have RTOS support on Blackfin. so this should be fit for your platform. want to know detail advice, please contact with us 800-810-1742 |
[2003-12-18 11:17:01] |
| [问：lijplijp] |
Blackfin处理器要是用在视频采集中，会考虑其实时性问题。在这方面该处理器性能如何呢？与单纯的视频处理芯片相比，它的优势是什么？ |
| [答：Rick] |
our BF can support realtime video processing such as Mpeg4 ,H.263 etc.
compara with our AISC for video ,our BF is more agility. because it is programable. It is easy to update, and Blackfin also have function of control. |
[2003-12-18 11:18:59] |
| [问：321416] |
How much does Green Hills IDE cost which supports BlackFin serias? |
| [答：Ksri] |
The IDE of Green Hills is supported by the Green hills company which is a 3rd party of ADI. So, information about pricing, please contact support@ghs.com and they will give accurate pricing depending on the set of tools and the configurations you wish to have like whether you need a green hills probe or what tools you need etc. |
[2003-12-18 11:20:17] |
| [问：656974] |
从手册中看到， Real-time (30 fps) Windows Media? Video 9 Series decoder/encoder，对于不同的codec，压缩效率和占用的资源不同，我想了解一下，视频采用h.263标准，音频采用g.723.1标准，采用Blackfin处理器，在保证语音的情况下，会达到多少fps， |
| [答：Chuan] |
H.263 is very easy to realize on Blackfin. if you use our BF532, the 10$ part, you can reach about 50fps for H.263 and G.723.1, of course you do not need 50 fps, so you can use the rest resources to do some system control and protocal and TCP/IP and so on. |
[2003-12-18 11:20:22] |
| [问：yaojl] |
在BF535上是否能够实现H323协议栈，如果能够，如何实现 |
| [答：Rick] |
BF535 can do H.323 and H.263 together |
[2003-12-18 11:20:44] |
| [问：chengyun] |
请问如果只实现H.263算法，用哪种BlackFin性价比比较好。占用CPU资源比例是多少？ |
| [答：Chuan] |
if you only need the Blackfin for H.263, the BF531($5) is enough. but for system, maybe you need BF532, it will consume less than 1/3 mips on BF532 |
[2003-12-18 11:22:15] |
| [问：643435] |
Blackfin 处理器是否存在流水线冲突的问题，该如何解决？ |
| [答：Rick] |
Our visualDSP can do with the pipeline conflict buy add nop to pipeline . you need not to care about it. And you can also find where the pipeline confilct then reduce it to improve your code. |
[2003-12-18 11:23:54] |
| [问：samire] |
MPEG4编码器对数据区的容量有什么要求？ |
| [答：Chuan] |
of course the larger the better, but think of the cost, you do not need that so much.
BF532 is enough for MPEG4 encoder CIF, but if you want for D1, we have another product that will release next month. |
[2003-12-18 11:24:19] |
| [问：815069] |
blackfin 有没有提供类似55x的基本图像库，如DCT IDCT等 |
| [答：Rick] |
You can have it . pls email to china.dsp@analog.com for the code. |
[2003-12-18 11:24:31] |
| [问：321416] |
How many channels of video Does BlackFin support? |
| [答：Ksri] |
The number of channels of video is a function of the size of the image and the amount of compression one needs. For example for a CIF image, to do MPEG2 decode for MP/ML profile it takes 156 MIPS. So, for a 600MHz, BF, roughyl 4 channels can be accomodated.
Similarly, for MPEG4 decode for Simple profile CIF image, it takes around 180 MIPS. So, you can accomodate 3 channels
Again every thing is a function of size of the image and the amount of compression you are doing. |
[2003-12-18 11:25:03] |
| [问：13823608335] |
新版本 bf531/2中的 Instruction ROM 中固化是什么程序 |
| [答：Ksri] |
The software in ROM for the BF processors is mostly the boot code that will set up appropriate boot drivers for the SPI or EPROM etc.
User code is not put there at all. |
[2003-12-18 11:25:40] |
| [问：13823608335] |
APEX ICE 和 SUMMIT ICE比起来速度大概差多少？ |
| [答：Singer] |
Apex ICE runs in USB connection with lower speed, about 1MHz. But Summit ICE will run between 5M - 10MHz. |
[2003-12-18 11:25:56] |
| [问：180858] |
有关basestation的应用，也就是基站控制器上，BLACKFIN 有用武之地么。 |
| [答：Rick] |
Can blackfin used in Basestation? |
[2003-12-18 11:26:14] |
| [问：hmong] |
刚才说Blackfin可用于GSM手机开发，可否支持CDMA开发？ |
| [答：Ksri] |
Yes. You can support CDMA also. For instance, you have instructions for population count, viterbi etc that will enable you to do CDMA operations. Given that the BF has 2 ALUs, you can accomplish complex arithmetic also using software. A lot of MIPS in BF procewssor means that CDMA handsets can be done using BF in software and that is ideal for future upgrades |
[2003-12-18 11:27:00] |
| [问：星时空] |
ADI有哪些型号适合做数码相机的图像压缩处理，请给出相关型号选择及比较。 |
| [答：Chuan] |
ADV202(an ASIC)
and Blackfin, BF533 is suitable for this. also, we have a product more fit for digital camera, this will release next month, if you want to know it now, please contact with us 800-810-1742 |
[2003-12-18 11:27:22] |
| [问：mengqinghui] |
533动态电源管理中电压和频率的对应关系如何？即在不同的核电压下可以稳定工作的最高频率是多少？ |
| [答：Rick] |
In Blackfin you can adopt the voltage and frequency in different work mode.
detail informatin about it pls refer to Bf533 HW manual |
[2003-12-18 11:28:08] |
| [问：jml55] |
1.BK535如何设计USB接口，能否提供硬件电路图及固件框架？
2.如何将开发板上的SDRAM扩展成512M?
3.分别用C和汇编写程序，执行效率上有多大差别？ |
| [答：Ksri] |
There is already a USB on BF-535 processor and there is no need to add any new USB. You can just connect the line driver and use is right away. For more information about using the USB and drivers, please visit our website at
http://www.analog.com/processors/resources
/technicalLibrary/appNotes.html
and you can see information about USB.
On the EZ-Kit to extend the SDRAM , you should add a small daughter card with 512 MB ram. you will have free MSx pins that you can use to connect.
Writing in C is also good in BF because the compiler is designed to be efficient. But at the same time, assembly writing gives the best performance.
For more information, please contact at dsp.support@analog.com |
[2003-12-18 11:29:29] |
| [问：samire] |
如何能在Blackfin上实现实时CIF格式的MPEG4编码器？ |
| [答：Chuan] |
use C code for frame and some subroutine use ASM for optimization, it is very easy to achieve that. |
[2003-12-18 11:29:40] |
| [问：aninin] |
要把C程序load到EZ-KIT板的FLASH中并正确执行，是否要用到LDF文件？是否必须修改生成的LDF文件？ |
| [答：Rick] |
LDF is needed in project . and you can refer to the default ldf we provid in your visualDSP++ install direction.
you can also modify your ldf as you needed. |
[2003-12-18 11:29:53] |
| [问：chengyun] |
每款BlackFin的H.263和H.264算法性能评估是什么情况（支持图象格式、压缩速率等）？ |
| [答：Ksri] |
We do not have the benchmarks for H.263 and H.264 right away. But if you can contact us at dsp.support@analog.com, we can find out the information from various sources and get back to you. |
[2003-12-18 11:30:11] |
| [问：blackhorse] |
能给出一些基于blackfin在voip的成功商业应用吗？如果有，解释一下其总体方案? |
| [答：Ksri] |
BF can be used in VoIP. While we cannot give the information about the customers that use BF, we do have some customers using BF for VOIP. Basically the PCI on the BF-535 enables the customers to easily hook on to the ethernet bridge chips like the MAC etc.
In the future we will have chips that have more peripheral integration that would enable you to connect to the ethernet more seamlessly that will reduce system cost. |
[2003-12-18 11:31:42] |
| [问：peng-kai] |
Blackfin处理器系统开发中，是否有关于操作系统的嵌入及开发工具软件的使用的培训及讲座等。 |
| [答：Rick] |
yes we have the training of our DSP and development tools over county. You can visit our website to find where and when the training hold. |
[2003-12-18 11:31:53] |
| [问：blackhorse] |
请问BF535是不是会逐步退出市场，被533/532取代？ |
| [答：Chuan] |
no, it is in different application. BF535 have no video in port but have pci and USB, the main application is in industry. and BF533/2/1 is focused on video market. |
[2003-12-18 11:33:13] |
| [问：MARY HUANG] |
1 ROM/RAM 各多大？
2 中断有几个？
3 多少个口？
4 多少定时器？
5 多少A/D 转化口？
6 有没有VFD，LCD DIRVER 口？
7 能兼容东芝870系列吗？ |
| [答：Ksri] |
BF-535 has no ROM, But it has 308Kbytes of onchip RAM. BF-533 has 32KB of ROM and 112 Kbytes of RAM.
All can support upto 16 interrupts with programmable priority. There are 3 timers including a PWM. You have to use external AD conversion. No onchop. You have a PPI for LCD drivers or VFD. However you can use UART for any host communication. We also have Serial Prot and SPI |
[2003-12-18 11:33:25] |
| [问：kingwcl] |
在汇编环境下，我想问一下，如何定一个变量？定义变量的话，每次使用都得通过这个变量的地址吗？ |
| [答：Rick] |
you can define a var by " .var xxx"
You can access this variant by the address of this var. |
[2003-12-18 11:33:32] |
| [问：32kmcu] |
BLACKFIN有MMC吗？ |
| [答：Ksri] |
BF has memory protection. You can program registers to protect regions of memoyr. However there is no full fledged MMU to support virtual memory. You can ofcourse do some things in softwarer |
[2003-12-18 11:34:08] |
| [问：656974] |
数字摄像头能否直接接入采用Blackfin处理器？ |
| [答：Chuan] |
yes, blackfin has flexible interface that can connect with CMOS, analog camera and digital camera, Even CCD is ok.
|
[2003-12-18 11:34:49] |
| [问：303390] |
can any type of blackfin chip support H.264 codec now? what is the performance? |
| [答：Ksri] |
I dont have the actual performance of H.264 on BF immediately, but I know one of the ADI groups/third parties are working. BF is a programmable processor and supports the H.264 codeec. For more details, please contact us at dsp.support@analog.com and we will get back to you |
[2003-12-18 11:35:08] |
| [问：603615] |
我在深圳，请问EZ-KIT和VDSP++在哪里可以买到？ |
| [答：Rick] |
you can contact our disti in Shenzhen . you can call 800-810-1742 for the contact of our agency |
[2003-12-18 11:35:38] |
| [问：yuesong] |
请问VDK的性能如何？占用多少资源？ |
| [答：Ksri] |
VDK scheduler is written in Assembly . So the context switching time is less. A context switch should take around 210 cycles in BF> The memory in VDK is around 10Kbytes., |
[2003-12-18 11:37:16] |
| [问：suncrr] |
我想用blackfin实现mpeg4的编码，可是编码器的代码量大于L1 SRAM，我应该怎样配置L1 SRAM才能使程序的性能最优？谢谢 |
| [答：Chuan] |
you can enable the program cache if the program bigger than L1. but as far as I know, the MPEG4 encoder, even C source code, can be in L1 SRAM after using optimised compilation. so many you can try again, or you can ask for help from us 800-810-1742 |
[2003-12-18 11:37:49] |
| [问：EPORD3] |
the BLACKfin ADSP532/ADSP532 performance ,could it run Hi-speed MP3 encode up to 4X(600KB/S) performance? |
| [答：Ksri] |
YEs. MP3 on BF can run at around 30MIPS for a 48-Kbit sample rate. So, you can support upto 20 channels of MP3 with each channel around 48-kbits / sec speed. |
[2003-12-18 11:38:27] |
| [问：ljp] |
二维DCT程序的输入数据灰度值如何选取?多大为最佳?它和什么因素有关? |
| [答：Ksri] |
This is an video algorithm related question. I am not sure what you meant by greyhould for the planar DCT, but basically you may need to try it out on Matlab and see the performance and then move the same into the DSP |
[2003-12-18 11:39:15] |
| [问：goodfish] |
从ppi输入的656视频流的格式如何采集到一帧完整的图像,有哪些同步信号需要控制的？ |
| [答：Rick] |
PPI support ITU 656 input directly.
detail of the design you can refer to the manunal of BF533 or anyother problem pls email to china.dsp@analog.com for tech support |
[2003-12-18 11:39:20] |
| [问：EPORD3] |
The BF532 Its can run MPEG2/MEG4/WMA/MP3 decode
the ,The ADI can also support firmware obj code to customer? |
| [答：Ksri] |
Yes. For MPEG2 decode it takes around 150MIPS, for MPEG4 decode it takes around 180MIPS and MP3 decode around 30MIPS. ADI can support firm ware but at the same time, there will be licensing issues. Please work with your sales and local disti for more details about this. |
[2003-12-18 11:40:16] |
| [问：josephfu] |
BLACKFIN 有LCD CONTROLER吗？我们的产品需要将视频信号直接在LCD上显示。 |
| [答：Singer] |
Blackfin don"t have LCD controller inside. But you can easily connect LCD controller and LCD to Blackfin. Please reference our EE Notes as EE-184: Interfacing EPSON S1D13806 memory display controller to Blackfin Processors and our Extend Board Manual |
[2003-12-18 11:40:50] |
| [问：ljp] |
MPEG4的运动矢量估计精度能做到多高? |
| [答：Chuan] |
it depends on your algorithm, the more precions you want, the more mips you will be use for the motion estimation, so I suggest you to calculate and just make a balance between the performance and cost, for example, you can use BF532 to realize the MPEG4, also you can use BF533 to realize the same if you want more precise. |
[2003-12-18 11:41:22] |
| [问：321416] |
Which Blackfin can do 4 MPEG4 encoding at the same time? |
| [答：Ksri] |
An MPEG4 decode requires around 180MIPS with simple profile. The max. speed of BF-533 is 600MHz. This means that you can support upto 3 such decoders at the same time. However we are optimizing the code further and hence getting to 4 is not a problem. Also, when you connect 2 BFs together, then you can easily support 5 of them eaisly. |
[2003-12-18 11:41:34] |
| [问：743056] |
我用USB接口（评估板上的J10）怎么写不进数据到SDRAM. |
| [答：Rick] |
sorry It is difficult to judge where is the problem.
We need more detail of this issue such as the rev of you visualDSP ,EZkit, the OS you pc have.
So you should contact china.dsp@analog.com for tech support |
[2003-12-18 11:41:44] |
| [问：lijplijp] |
What is the meanning of "2D DMA"in the viedo processing,and what is the main difference with the other processing methods, and what is it"s advantage? |
| [答：Ksri] |
Normally when you do a DMA it is linear. But video has x & y dimensions. So, you need to move data both in x & y dimensions and video prpcessing involves square blocks with x & y diemnsions. So, 2-D dma will redujce any com[uational overhead to process. This will save a lot of MIPS to place and getthe data |
[2003-12-18 11:42:38] |
| [问：chengyun] |
How fast the internal SRAM"s access speed? |
| [答：Ksri] |
Internal SRAM can be accessed at 2 x 32-bit words / cycle |
[2003-12-18 11:42:56] |
| [问：LIL886599] |
动态电源管理置什么 |
| [答：Rick] |
detail of powermanagement pls refer HW manual of Blackfin . If you need example code of power management pls contact china.dsp@analog.com for the code and more tech suppor |
[2003-12-18 11:43:40] |
| [问：blackhorse] |
Is the software compatible
which runs on bf535,bf533 and bf532? |
| [答：Ksri] |
Yes. The SW is compatible. So, if you write in assembly code, you can just recompile. But if you can make slight changes to handle any microarchitecture differences like the pipeline and stalls you get more performance. Also, peripherls and memory map could be different. |
[2003-12-18 11:43:51] |
| [问：jasoncsh] |
如果在上海，要进行MPEG4方面的产品开发。你们能推荐你们的视频编解码方面的第三方合作伙伴吗？ |
| [答：Chuan] |
Yes, we have SJTU and ZJU also some small companies who can provide algorithm or solution in Shanghai area. please contact with us for detail because we need to select a proper one for you according to your demand and business model. |
[2003-12-18 11:44:11] |
| [问：yaojl] |
我想用BLACKFIN只实现H263编码算法，希望达到CIF30帧的编码速率，不知使用哪一个具体型号比较好？ |
| [答：Rick] |
Blackfin532 can realize H.263 very easy! |
[2003-12-18 11:44:32] |
| [问：13823608335] |
有没有免费的图形控件支持blackfin系列的DSP,假如收费一般价格大概是多少钱 |
| [答：Ksri] |
Most of the imaging standards are having ip issues. Though they are open, when you use you have to have royality associated. To understand the details, please contact your local sales/disti for info. |
[2003-12-18 11:44:42] |
| [问：sccgjchn] |
如果我要把图像处理到以太网上传输 在blackfin上能否完成。 |
| [答：Chuan] |
yes, you can. and we have the solution now. |
[2003-12-18 11:44:49] |
| [问：starlyc] |
i want use chips to receive the MW or SW radio,pls suggest one chips |
| [答：Ksri] |
You can use BF for demodulation in the radio and associated encryption/decryption functions. However for the analog frontend ics, please get in touch with linear.support@analog.com and they will suggest suitable ones |
[2003-12-18 11:45:51] |
| [问：rogerjay] |
We would like to use BF in our MPEG4 decoder application, which requires TFT LCD support and very low power consumption. which type of BF should I choose?
|
| [答：Ksri] |
You can go for BF-531 DSP. For single channel decoder it takes around 180 MIPS. So, it is OK. Use exterrnal SDRAM or so. Connect a LCD with PPI. It should work. |
[2003-12-18 11:46:34] |
| [问：amaosonic] |
在接口方面，blackfin系列支持哪些呢 |
| [答：Rick] |
BF support many kind of interface such as Sport ,UART,EBIU,PPI,SPI. BF535 also support 32bit,33Mhz PCI!
detail you can refer datasheet or manuals of Blackfin. |
[2003-12-18 11:46:45] |
| [问：ljp] |
如何实现8位精度的除法？ |
| [答：Ksri] |
Well you can use the DIVS and DIVQ instructions as primitive division macros so that you can perform divison on B F |
[2003-12-18 11:47:07] |
| [问：sccgjchn] |
Blackfin处理器用能处理Mpeg2 、Mpeg4 或263 263+ 格式吗？是否提供以太网接口。 |
| [答：Chuan] |
yes, Blackfin is very fit for dealing with MPEG2, MPEG4 and so on. the series temporary have no ethernet interface now, but you can use 8019 to extend, it is very easy. and the blackfin with ethernet interface is coming soon. |
[2003-12-18 11:47:36] |
| [问：EPORD3] |
BF532 It can run realtime MP3 encode and decode, if audio data rate is higher then 1X,then just to run MP3 encode up to 4X function ,not need realtime MP3 decode performance. Can do it ? |
| [答：Ksri] |
Yes. You can do real time encode and decode. With out the need for realtime, you need to have big IO buffers. But you can certainly do both in real time and offline also.l |
[2003-12-18 11:48:01] |
| [问：yuesong] |
请问有没有类似audio talk-through的video程序，可以用一片blackfin实现视频采集、显示？ |
| [答：Singer] |
It"s not available now. But we"ll provide some program similar as talkthrough. Of course one Blackfin could do that. |
[2003-12-18 11:48:03] |
| [问：ljp] |
Blackfin可以同时进行2个16位的乘法，能否进行32位的乘法运算?如何操作? |
| [答：Ksri] |
No. BF can do only 2 x 16-b it multiplies at same time. For 32-bit, there is one instruction that takes 5 cycles that will multiply 32 x 32 numbers and give 32-bit result. |
[2003-12-18 11:48:35] |
| [问：robin] |
Blackfin是否可以多片互联（像TigerSHARC一样）使用? |
| [答：Ksri] |
You can certainly use it. You can connect BFs together on SPI or Serial Port chain or UART chain and use. But you needed a bit of software support to do this. There is no in built logic to dso this automatically. On the other hand for BF-535 you cna certainly use PCI bridge and put every thing on PCI. |
[2003-12-18 11:49:38] |
| [问：lgrdxx_2001] |
你们公司的各种操作系统各有什么优点，我以前使用metrowork公司的codewarrior |
| [答：Chuan] |
the OS is not provided by ADI but by the OS vendor. such as Windriver- virturso, VSPworks. you can select according to them. our uClinx is developed by metrowerks.
|
[2003-12-18 11:49:46] |
| [问：robin] |
请叫ADI专家关于Blackfin的有关问题:总线的宽度，对外的吞吐量是多少？ |
| [答：Rick] |
As for BF533/2/1 has 16bit EBIU 133Mhz
and BF535 has 32bit EBIU. |
[2003-12-18 11:50:09] |
| [问：xufeng5581] |
531做网络影像实时传输，可以达到30fps吗。我想用CMOS SENSOR。 |
| [答：Ksri] |
Yes. I guess you can use 30fps for BF-531. The benchmarks I have is that you can go upto 160 MIPS for MPEG2 decode MP/ML profiles on BF. Since BF has 600MIPS you can do it |
[2003-12-18 11:50:39] |
| [问：qin] |
调用IIR滤波器时,滤波器的系统如何考虑? |
| [答：Rick] |
You can get IIR example code based on blackfin from our website. |
[2003-12-18 11:51:12] |
| [问：karneyhu] |
Is the resource of I/O enough for extention of application, such as 1394,usb...? |
| [答：Ksri] |
Yes. The Blackfin IO is speed enough. For example external port of BF-533 supports upto 133MHz at 16-bit transfer. This far higher than the USB 2.0 speed of 480Mbits. You need to have additional glue logic to interface these peripherals. Future BF processors will have newer peripherals like USB etc. BF-535 has onchiup USB |
[2003-12-18 11:51:57] |
| [问：zxy_hot] |
dsp用作数据采集(AD)时，不要微处理器控制是否影响性能。 |
| [答：Singer] |
Blackfin can not be used as A/D. It can receive Digital Signal. |
[2003-12-18 11:53:00] |
| [问：fscfscfsc] |
Blackfin处理器在休眠状态下最小功率能达到多少？ |
| [答：Ksri] |
BF will consume around 15mA in seep mode at 0.8 volts this with the power given. If you remove the core voltage, it will come down to around 24 micro amps and hence very low pwoer |
[2003-12-18 11:53:12] |
| [问：gycsu] |
Does blackfin support the MMC? |
| [答：Ksri] |
BF has registers to offer memory protection. You can define regions of memory that you wish to protect in your application. However, there is no full fledged MMU to support virtual memory. You can do it in SW yourself. |
[2003-12-18 11:54:00] |
| [问：lotusyan] |
每个应用中不一定需要生成VDK文件吧，那么VDK文件主要用于什么情况下？ |
| [答：Ksri] |
You can use VDK whenever you want to have schedulgin different threads and tasks or shared memory etc. If your application is a simple stand alone applkication wityh no complewx tasks etc, dont use vDK |
[2003-12-18 11:54:43] |
| [问：srdqj] |
If using the BF21535 in voip application, ADI will give the support for voice coding support? |
| [答：Ksri] |
ADI will not be able to offer voice coding software. This is due to Ip AND PATENT and royalty issues. But we can helop you through our 3rd parittes in this |
[2003-12-18 11:55:25] |
| [问：lotusyan] |
BF531的UART口可以直接用于通信吗？与RS232总线进行通信吗？ |
| [答：Ksri] |
Yes. BF-531 UART can be used to communicated directly. Buyt you need line drivers. The chip provides the interface and line drivers will do the voltage and current amplifications. ADI has line driver chip that we can suggest. |
[2003-12-18 11:56:07] |
| [问：elvenyh] |
各位专家，你们好！我是ADI的新用户。我有两个问题想请教一下！
NO1：如何将自己的代码下载到FLASH中？
NO2：如果代码超过16K WORD，怎么办？
我是一名初学者，请尽量讲的详细一些，谢谢！ |
| [答：Rick] |
1.In our EZkit we provid you a flash driver to program the flash. in your own system , if the flash is different with that in EZkit, you should write a flashdriver by yousleves refer to our flash driver source code. or use external flash programmer.
2.if you application code can not be storage in intenal instruction memory . you should use overlay to storage the code in external memory. detail of how to do it you can refer our ee note and dsp manuals |
[2003-12-18 11:56:26] |
| [问：13823608335] |
blackfin 是否可以在外部的SRAM上运行 |
| [答：Ksri] |
YEs. Blackfin has onchip SDRAM controller and user can eaisly connect an external SDRAM. Also BF has support for connecting external async. memory |
[2003-12-18 11:56:48] |
| [问：jjji_1106] |
请问专家，如何来评估现在几款流行的视频处理器的处理能力？！比如，600MHz的频率意味着什么？！如果运行H.264，到底需要多少处理能力？ |
| [答：Chuan] |
good question, you should not judge the ability only by the number of MIPs. you should also see the architecture. so you need some benchmark such as from BDTI.
the 600M Blackfin can deal with MPEG4 half D1, at 25fps. but for H.264, which version of the H.264. in general, we need 2*600M to finish the H.264 CIF decoder, for encoder you need more mips, but if you deduced the algorithm of H.264 a lot, it is another case. so the algorithm with the same name of H.264 may vary a lot in complexity. |
[2003-12-18 11:57:06] |
| [问：frank_zhyj] |
How BF533 support LCD? |
| [答：Ksri] |
BF has PPI interface that is compliant with CCIR656 industry standard. You can connect LCD through this port and it should be seamless. With little gluelogic, you can accomplish connections betwen BF and LCD |
[2003-12-18 11:57:34] |
| [问：260700] |
曾尝试C和汇编的混合编程，也注意了link指令以及堆栈的问题，却没有成功，还有什么要注意的吗？ |
| [答：Singer] |
For C and Assemble Mixed programming, please reference the Compiler and Library Manual. For detail problem, please send to china.dsp@analog.com |
[2003-12-18 11:57:48] |
| [问：jjji_1106] |
请问专家，请详细说明，利用ADI的这款处理器，需要哪些开发工具？由谁提供技术支持？开发工具价格是多少？ |
| [答：Rick] |
to development your project you need Ezkit for evaluation . ICE and visualDSP to debug.
for tech support you can email to china.dsp@analog.com. the price of a set of tools is $1200 include ezkit,ICE and visualdSP.
You can contact our disti to buy the tools |
[2003-12-18 11:58:44] |
| [问：yuesong] |
为什么在535中可以32位访问SDRAM，而在533中却变成了16位，这是出于什么考虑？在以后的产品中准备如何处理访问片外SDRAM的瓶颈问题？ |
| [答：Ksri] |
BF-535 is a more expensive processor with more pin count. Som 32 bits external bus. In 533 it is a cheaper processor and less pin count. So it has onyl 16-bit external bus.
The best way is to determine your applicatiuon code size and the IO band width and then determine whether you need to have 16-bit or 32-bit external interface. |
[2003-12-18 12:00:03] |
| [问：745622] |
贵公司是否提供软核？ |
| [答：Ksri] |
No. ADI will not provide BF softcore at this point of time |
[2003-12-18 12:00:20] |
| [问：lijplijp] |
In the former lecture, he said "we can afford the sample of ADS-BF531、ADS-BF532、ADS-BF533"。how can we get them? |
| [答：Rick] |
You can apply the sample in our website www.analog.com or contact our agency . |
[2003-12-18 12:00:33] |
| [问：qin] |
IIR滤波器和FIR滤波器有何区别?相位性能那种滤波器好些? |
| [答：Ksri] |
IIR is Infinite Impulse Response. FIR is Finite Impulse Response. In terms of performance, IIR will be more effective, but phase is bad. For FIR, you need larger filter lengths to accomplsih the same roll off, but your phase is not that grea.t |
[2003-12-18 12:01:08] |
| [问：407649] |
我想将blackfin处理器和视屏压缩芯片结合，制作一套能实现硬盘录像，网络流媒体播放的设备，请问选此处理器是否合适，在软件解压、网络传输中是否有速度或其他问题 |
| [答：Chuan] |
you do not need to combine the Blackfin and ASIC. the Blackfin one chip is enough for this. your product is like a media play box and we already have customers who are doing like this. do not worry, not to say decoding, even the encoding can be finished well on Blackfin platform. |
[2003-12-18 12:01:23] |
| [问：745622] |
VisualDSP++的软件环境在simulator（软件仿真）为什么很慢？ |
| [答：Rick] |
It is depent on the performance of your PC and your application codes. |
[2003-12-18 12:01:46] |
| [问：yaojl] |
有哪些商业的H323协议栈能够在BF535上使用 |
| [答：Chuan] |
you can run uClinux on BF535, then the H.323 protocal on Linux can all be used on.
|
[2003-12-18 12:02:26] |
| [问：zhumin_cn] |
PCI 的时钟和位数是多少? |
| [答：Rick] |
BF 535 has a 32bit 33Mhz ver2.2 PCI interface |
[2003-12-18 12:02:40] |
| [问：josephfu] |
能否介绍一些用BLACKFIN开发的便携式视频产品。 |
| [答：Chuan] |
video PDA, smart phone, digital camera, media play box, PVR(DV), mobile phone and so many else. |
[2003-12-18 12:04:14] |
| [问：amaosonic] |
能再介绍一些数据寻址方面的内容吗？ 我参加培训看的比较烦琐 |
| [答：Ksri] |
Data processing is not signal processing, but has lot of control processing. BF has good performance to do data processing also. It has very small instructions, it has cache and you get good code density. Also BF has UART, Watch dog timers and RTC for control applications |
[2003-12-18 12:04:14] |
| [问：303390] |
what will be chip price for BF533(600MHz)? |
| [答：Rick] |
for the price pls contact our agency.
If you don"t know the agency "s contaction pls call 800-810-1742 . |
[2003-12-18 12:04:57] |
| [问：180858] |
Does the Blackfin can use in Basetation? |
| [答：Ksri] |
BF is good for power sensitve applications. If you want to use in Base station we recommend you to use TigerSHARC becuase you will get more channels and cost/channel will also come down. TigerSHARC has a lot of IO and core MIPS to do base station processiung |
[2003-12-18 12:05:05] |
| [问：745622] |
io口电源，内核电源，时钟电源在上电时序上是否有要求？ |
| [答：Ksri] |
The power supply sequence is simple in BF. It needs 2 pwoer supplies core and IO and they need to be poowerd in a specific sequence that we describe well in manaula. Once that is done, nothinglilke clock or kernel power. You are ready to use the processor |
[2003-12-18 12:05:54] |
| [问：levislicn] |
How to realize Ethernet Interface? |
| [答：Ksri] |
You can connect a ethernet MAC on the PCI of the BF 535 processor and realize a ether net interface. No problems. In future we will have BF processors with ethernet interfaces as well. |
[2003-12-18 12:06:31] |
| [问：lijplijp] |
Blachfin 系列处理器都可以提供什么接口？ |
| [答：Ksri] |
BF offers the following interfaces
SDRAM controller,
Timers
Watchdog timers
Real time clock
Serial ports - 2
SPI - 1 or 2 depending on processor
UART - 1 or 2
PPI - in 533/32/31 |
[2003-12-18 12:07:22] |
| [问：lotusyan] |
BF531的功耗大概多少？正常工作的时候 |
| [答：Rick] |
It have different power consume in difference work frequency and voltage .
here is a typcial data:
300mW @ 400Mhz |
[2003-12-18 12:07:47] |
| [问：dengyueming] |
请问具有协处理器接口吗？ |
| [答：Ksri] |
No co-processor interface is availbale in BF. However you can connect any slave processors on the external port interface of BF |
[2003-12-18 12:07:50] |
| [问：levislicn] |
BF53X容易扩展IDE接口吗？怎样实现？ |
| [答：Ksri] |
ADI supports Microsoft Active X technology with IDE. So, you can extend the IDE of BF processor with Active X plugins. More information will be published out in the future. |
[2003-12-18 12:08:34] |
| [问：yudong66] |
1.BF535是否在运动控制领域有过成功的应用，能否给出实际例子？
2.BF535上embedded linux是否支持实时扩展？
3.BF535的扩展内存有多大？是否支持Flash盘？ |
| [答：Chuan] |
1. please contact with Singer Zhang in Shanghai office for this, 021-64267009
2. yes.
3. the address memory is 4G, the RAM memory is 384M, to connect Flash disk, you need driver to the USB, the hardware is no problem |
[2003-12-18 12:08:51] |
| [问：robin] |
Blackfin能否和TS101连接使用，是否可以做TS101的协处理器? |
| [答：Singer] |
You can combine Blackfin and TS101 in one system, you can use Blackfin to do some control and display function. |
[2003-12-18 12:09:18] |
| [问：13823608335] |
为维持RTC，我必须使用多大容量的电池才能保证1年时间不会丢失时钟？ |
| [答：Ksri] |
Well it all depends on how you want to use the processor. If you are going to run the processor and use RTC in parallel it would be around 52mW at 200MHz at .8 V. Depending on this you shold compute your battery size |
[2003-12-18 12:09:40] |
| [问：kingwcl] |
请问在C环境下如何设置sclk，cclk |
| [答：Ksri] |
We support inline assembly in C programs. You cna use asm ("") ; macros. Insidee the quotes you can put assembly instructions and you can modify the PLL control registers to modify SCLK and CCLK> |
[2003-12-18 12:10:27] |
| [问：bigbenzhong] |
请问在uclinux for blackfin上是否有什么成功的应用了？for BF533是否已经发布？ |
| [答：Singer] |
ucLinux for BF533 hasn"t been released until now. For the detail application, please contact china.dsp@analog.com |
[2003-12-18 12:11:14] |
| [问：13823608335] |
怎样用PPI控制LCD显示？ |
| [答：Rick] |
PPI can support different format video output such as ITU 656 and general purpose mode.
detail tech information pls refer the charpt of ppi i BF manual. or contact china.dsp@analog.com |
[2003-12-18 12:11:17] |
| [问：dualxu] |
how about the ethernet solution with blackfin processor? |
| [答：Ksri] |
You can connect an external ethernet MAC using the PCI of BF-535 processor. It is already done by a 3rd party of ADI. In future you can see more products from ADI having onchip ethernet MAC |
[2003-12-18 12:11:18] |
| [问：197352] |
How can I get the datasheet or user"s manual of Blackfin processor? |
| [答：Rick] |
You can download the datasheet and manual from our website. |
[2003-12-18 12:12:38] |
| [问：kingwcl] |
我想问一下用C编写的程序如何实现对SCLK和CCLK时钟的设置？在例子程序中是用预编译做的，可是我把它移植过来就是没法叫醒中断，为什么？我想问问在c中如何实现两个时钟的设置 |
| [答：Ksri] |
AdI C compiler allows you to have inline assembly code in C. So, you can use asm (""); directiev inside C language and then configurethe SCLK and CCLK. No problems. Please refer to the compiler manual of VDSP for more information. Also, regardin your interrupt problem, please get in touch with dsp.support@analog.com with more details and we will get back with updates. |
[2003-12-18 12:12:56] |
| [问：wang_bupt] |
只用一片BF533做视频的解码可以吗？而且不用外接arm或其他 |
| [答：Singer] |
You can use one BF533 to do video decoder, but it depends on your requirement. Blackfin could do control tasks instead of using arm |
[2003-12-18 12:13:17] |
| [问：levislicn] |
BF53X能实现FULL D1的MPEG-4 REAL TIME ENCODING 吗？需要多少MHz主频？ |
| [答：Chuan] |
BF53x can not realize this. you need the one we will release next month, if you want to know that please contact with china.dsp@analog.com |
[2003-12-18 12:13:32] |
| [问：260700] |
blackfin是否提供每条指令对应的机器码了呢？有的话就可以很方便的知道一些操作数的位数限制了。 |
| [答：Rick] |
Machine code is not opened , But you can find opcode in BF instruction manuals |
[2003-12-18 12:15:17] |
| [问：levislicn] |
how to realize IDE interface with BF53X?
|
| [答：Ksri] |
ADI VDSP tools have support for BF processors. You just need to install the BF VDSP tools, and confiugure the emulator before using them. You should have no problems at all. |
[2003-12-18 12:15:26] |
| [问：levislicn] |
请问目前能开放的代码和资源多吗？能否免费提供一些常规的视频压缩算法源代码或者库？ |
| [答：Chuan] |
you can download some free code from our website.
we are working on this to provide more. we will publish once we are available.
|
[2003-12-18 12:15:33] |
| [问：rogerjay] |
where can I find MPEG4 decoder software which has been ported to BF531? And How much does it cost? |
| [答：Ksri] |
ADI has got the MPEG3 decoder SW on 531 through some of its 3rd parties. Please get in touch with your local sales/disti and they will be able to help you with pricing and other royalty issues. |
[2003-12-18 12:16:12] |
| [问：lijplijp] |
在进行图像处理时，需要对MPEG2、MPEG4进行事先编码吗？如何编？ |
| [答：Rick] |
you needed not to preprocess the image data befor processing in Balckfin. |
[2003-12-18 12:16:36] |
| [问：zhang3f] |
多媒体处理器在手机中的应用方便么？可以和TI的基带一起工作么？封装有多大？ |
| [答：Chuan] |
yes, very easy.
yes, can work with TI.
package is mini-BGA, very small, fit for mobile phone.
|
[2003-12-18 12:16:47] |
| [问：yuesong] |
Is there any successful case of application of uClinux on Blackfin? Any dists for 533 available? |
| [答：Singer] |
Yes, there are some successful case of application. For detail and also distributor info, please contact china.dsp@analog.com |
[2003-12-18 12:17:05] |
| [问：amaosonic] |
blackfin是最适合与video方面吗 那么它与通常所说的宽带信号处理器有哪些明显优势？比如philip的一些 |
| [答：Ksri] |
Yes. BF is hte best for video. The biggest advnatage is that it is programmable processor with scalable higher performance. It also has features for micro controller and hence you can get rid of the micro in your system. Hence you willl save your system cost. This is a major advantage over phillips processors. You can also change the boadband stacks and migrate across different netweorks |
[2003-12-18 12:17:32] |
| [问：cylf] |
请问2158M(外部I/O为3.3V)能不能直接与5V系统连接？就是说芯片能承受5V的I/O电压吗？如果能，能稳定运行吗？ |
| [答：Ksri] |
No. You cannot connect a 3.3 V system cannot directly connect to 5V system. So, the best way to do this is to use a buffer and then accomplish this. |
[2003-12-18 12:18:09] |
| [问：chengyun] |
BlackFin和其它CPU的接口应如何设计？。（PPI已经用于CMOS Sensor了） |
| [答：Ksri] |
You can connect BF to another CPU using either SPI or UART. If nothing is available, you can connect using a few programmable flags and then play around a bit in software for communication |
[2003-12-18 12:18:56] |
| [问：lijplijp] |
BF系列是否带有内部缓存器？容量多大，能够存储几幅图片，例如512×512的图像。 |
| [答：Rick] |
You can use internal memory as a SRAM or as a cache. You need only to so some configuration.
BF533 have tatol 148kbytes internal memory so it is diffcult to storage a 512X512 image. you should to storage it in external memory such as SDRAM. |
[2003-12-18 12:22:28] |
| [问：lijplijp] |
我们正在做一个视频采集系统，Blackfin处理器能够胜任吗？它可以实现多大程度的实时性？ |
| [答：Chuan] |
it depends on which version and what size. for example, BF53x can complete MPEG4, MPEG2 etc for CIF size, but for D1 you need our next one, we need to sign a NDA then can give you the samples and datasheet.
all I talk is realtime, 25fps. if you do not need that, you can calculate according to the number. |
[2003-12-18 12:22:53] |
| [问：qin] |
我想用Blackfin DSP实现MPEG编或解码，哪有参考的示范？ |
| [答：Chuan] |
we have some example on our website, www.analog.com if you can not find that, plese contact with us china.dsp@analog.com. or you can get some C code for MPEG series than you can try to run them on Blackfin. |
[2003-12-18 12:25:24] |
| [问：xufeng5581] |
做数码相机的话，可以支持到3.0M的像素吗。 |
| [答：Chuan] |
can support up to 5.0M pixels, the dealing time within 1 sec. |
[2003-12-18 12:26:21] |
