標(biāo)題: TI DSP精華問(wèn)答(50個(gè)問(wèn)題) [打印本頁(yè)] 作者: 電子黑 時(shí)間: 2016-6-27 14:35 標(biāo)題: TI DSP精華問(wèn)答(50個(gè)問(wèn)題) 1.問(wèn): C6712怎樣訪問(wèn) I/O空間？
答: Acturally, C6000 have only one memory space, include Data and Prog memory.
The I/O also be mapping to memory space, can be accessed through EDMA and
EMIF bus.
2.問(wèn): TMS320C6712 的 32 位浮點(diǎn)特性與以往推出系列相比，有哪些優(yōu)勢(shì)，可提
供哪些性能，存在哪些不足？
答: It support IEEE_SP32 and IEEE_DP32 and IEEE_DP64 float_point. Compare
with C3x, it has strong C compiler and also good development tool CCS.
3.問(wèn): TI 能否盡可能將閃存集成在今后的 DSP產(chǎn)品中，以減少外設(shè)和提高線路精
度？
答: TI 具備將 FLASH 集成到 DSP中的能力。但是不同的用途有不同的要求。所
以我們針對(duì)用量較大的客戶會(huì)進(jìn)行集成以滿足客戶要求。
4.問(wèn): Is 6712, 6711 and 6701 all pin compatible?
答: Yes, they are all compatible.
5.問(wèn): 以 5409 為例，很多 DSP 產(chǎn)品在使用前必需進(jìn)行內(nèi)存分配，該工作目前由
用戶自己進(jìn)行，雖提供了很大的靈活性，但對(duì)經(jīng)驗(yàn)較少的人來(lái)說(shuō)會(huì)耗費(fèi)很多不必
要的精力，所以請(qǐng)問(wèn) TI 能否在發(fā)貨時(shí)就為芯片提供標(biāo)準(zhǔn)的配置文件？
答: DSP link comand file is effective tool to manage DSP memory configuration to
improve system feature. DSP BIOS has visuable tool to deliver the function.
6.問(wèn): 請(qǐng)問(wèn) DSP與 CPU、MPU有什么區(qū)別？
答: The structure of DSP is difference from CPU/MPU. In DSP, there are different
memory for data and instruction. And it focus on computing not flow management.
7.問(wèn): TI 能否為其 DSP產(chǎn)品提供更加靈活的外設(shè)以滿足多樣的應(yīng)用需要？
答 : Yes. In C6000, we have peripherals as these McBSP, HPI/Expension
BUS/PCI,EMIF(can connect with SBSRAM, SDRAM, Async RAM flush ROM
SRM), DMA/EDMA, timers etc.
8.問(wèn): 請(qǐng)問(wèn)"數(shù)字信號(hào)處理器"的對(duì)象是什么？
答: wireless communication, broadband internet access, image process, modem,
disital motor control ... We believe it can be used in every internet action, every bit.
9.問(wèn): TI的DSP產(chǎn)品的C代碼編譯效率低， 常使開(kāi)發(fā)者感到其結(jié)果不能達(dá)到預(yù)期，
請(qǐng)問(wèn) TI 有無(wú)應(yīng)對(duì)之策？(11:01:19 AM)
答: The C6000 C compiler performance can reach 70-80%. This is just because the
from the beginning time of C6000 core design, the RISC like structure have make the
C compiler and optimizer can be easy design and reach high performance. That means
the C optimizer is begin from basic hardware design. So the question is true for other
DSP, for C6000 good C compiler is our strong point.
10.問(wèn): TI 公司的 DSP 有什么特點(diǎn)？即在處理速度、存儲(chǔ)量、接口以及軟件編程
等方面有什么特點(diǎn)？
答: For C6000, it is the most advanced DSP, our C64x can run at 700Mhz to 1.1Ghz,
the memory space for C6000 can be 32 bits wide. And we have DSP/BIOS which is
industry proved and free real time kernal can help engineer design more easy and
focus on their application.
11.問(wèn): DSP是不是擴(kuò)大了功能的單片機(jī)？
答: No.
12.問(wèn): 在未來(lái)，DSP是否有代替 CPU的可能？
答: TI believe that in the coming internet era, many application engines will be driven
by DSP such as image, communication, digital consumer appliances. CPU can be
used as a controller, DSP will be used for specific functions.
13.問(wèn): DSP 與 FPGA 的區(qū)別？性能及用途方面。
答: DSP can be reprogramble offline and online, have more flexible than FPGA.
20.問(wèn)：TI的 DSP是否可以真正實(shí)現(xiàn)實(shí)時(shí)進(jìn)行 MPEGII 編解碼，技術(shù)支持是否能
足夠？
答：Yes. You need to do MPEG codec with c64x。
21.問(wèn)：TI 的 DSP產(chǎn)品中，對(duì) USB的支持情況是什么樣的？我要做一個(gè) USB接
口的高速數(shù)據(jù)采集卡，應(yīng)該選用什么型號(hào)的DSP和 AD芯片？
答：We do have c5509 DSP which support USB。
22.問(wèn)：dsp/bios 中的 system clock，是否是用于系統(tǒng)的任務(wù)、調(diào)度、周期任務(wù)的
管理？如果不用外部事件，使用 system clock將要占用一個(gè)定時(shí)器硬件資源，那
么這個(gè)定時(shí)器就不能用于定時(shí)、計(jì)數(shù)等正常。我的理解對(duì)嗎?
答：是的。
29.問(wèn)：用 dsp 硬件仿真設(shè)備調(diào)試 usb 接口板等設(shè)備時(shí)，與脫機(jī)調(diào)試，在時(shí)序及其
它方面有何不同。謝謝！
答：沒(méi)有不同。
30.問(wèn)：1.3.3V的 DSP 能否與 5V的 A/D相連接 2.目前設(shè)計(jì)一個(gè)浮點(diǎn)的系統(tǒng)采用
哪一種芯片較好？
答：1. No. You need a level shifting IC between them.2. If you need an high
performance floating DSP, I recommend C6000. For more details, you could refer to
the DSP selection guide http://www.dspvillage.ti.com/dspguide.
34.問(wèn)：1.DSP芯片內(nèi)是否有單個(gè)的隨機(jī)函數(shù)指令？2.DSP內(nèi)的計(jì)算速度是快的，
但是它的I/O口的交換速度有多快呢？3.DSP如何配合EPLD或FPGA工作呢？
答：1. No.2. Depeneded on which I/O you are referring. For HPI, the transfer rate
(in bytes) could be about 1/4 of CPU clock. For McBSP, the bit rate (kbps) could be
about 1/2 CPU clcok.3. You could cascade the emuation interface with the one on
EPLD/FPGA. Please see the following application notes for
details.http://www.ti.com/sc/docs/psheets/abstract/apps/spra439a.htm
36.問(wèn)：1、c5416 的 pcb 板設(shè)計(jì)是否需要考慮高速數(shù)字電路板設(shè)計(jì)？2、c5416 的
電源，EEPROM,擴(kuò)展 SRAM，雙口 RAM 設(shè)計(jì);能否介紹較詳細(xì)的管腳圖？3、剛
進(jìn)行 c5416 的硬件設(shè)計(jì)和軟件設(shè)計(jì)時(shí)，是否有較好的中文或英文參考書(shū)。
答：1. Yes. Since the operating frequency could be higher than 100MHz. 2. You could
refer to our C5416 DSK design.3.For S/W development, you could try the examples
from our CCS. For H/W design, you could refer to our EVM/DSK design.
38.問(wèn)： 我想了解TMS320C240及其相關(guān) DSP的設(shè)計(jì)方法， 用于全橋電源的 PWM
控制，謝謝。
答： You could download our Developer"s Kits from the following web
page,http://www.dspvillage.com/c2000devkit
41.問(wèn)：請(qǐng)介紹一款專用于 FFT,數(shù)字濾波，卷積，相關(guān)等算法的 DSP,最好集成
12BIT以上的 ADC功能。
答：I recommend TMS320LF240x, if your application is about motor/energy control.
Please also see our DSP selection guide for more information on
it,http://www.dspvillage.ti.com/dspguide
46.問(wèn)：VC33的哪些接口可接 AD?最好是無(wú)縫連接。
答：You could find recommended data converters for VC33 from the following web
site, http://www.ti.com/sc/docs/msp/c3x.htm
47.問(wèn)：DSP的程序編寫(xiě)用匯編好還是 C好？
答：You can use C coding and compiler for assemble code to do the function
verifiction, for better code optimize, you can modify with assemble code.
48.問(wèn)：TI 公司推出了一款 TS320多媒體處理器(DSP),可以應(yīng)用在安防系統(tǒng),可以
開(kāi)發(fā)成硬盤(pán)錄象機(jī)(DVR).再什么地方可以找到這個(gè)應(yīng)用方案.
答： If you are talking about DSC24, please visit the following web
site,http://www.prodsys.com/DMDK2400/
49.問(wèn)：我使用的是 TMS320LF2407，但是仿真時(shí)不能保證每次都能 GO MAIN。
我想詳細(xì)咨詢以下CMD文件的設(shè)置用法，還有 VECTOR的定義。
答：可能看門(mén)狗有問(wèn)題，關(guān)掉看門(mén)狗。