標題: TI DSP精華問答(50個問題) [打印本頁] 作者: 電子黑 時間: 2016-6-27 14:35 標題: TI DSP精華問答(50個問題) 1.問: C6712怎樣訪問 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: TMS320C6712 的 32 位浮點特性與以往推出系列相比，有哪些優勢，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: TI 能否盡可能將閃存集成在今后的 DSP產品中，以減少外設和提高線路精
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
以我們針對用量較大的客戶會進行集成以滿足客戶要求。
4.問: Is 6712, 6711 and 6701 all pin compatible?
答: Yes, they are all compatible.
5.問: 以 5409 為例，很多 DSP 產品在使用前必需進行內存分配，該工作目前由
用戶自己進行，雖提供了很大的靈活性，但對經驗較少的人來說會耗費很多不必
要的精力，所以請問 TI 能否在發貨時就為芯片提供標準的配置文件？
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: 請問 DSP與 CPU、MPU有什么區別？
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: TI 能否為其 DSP產品提供更加靈活的外設以滿足多樣的應用需要？
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: 請問"數字信號處理器"的對象是什么？
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: TI的DSP產品的C代碼編譯效率低， 常使開發者感到其結果不能達到預期，
請問 TI 有無應對之策？(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: TI 公司的 DSP 有什么特點？即在處理速度、存儲量、接口以及軟件編程
等方面有什么特點？
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: DSP是不是擴大了功能的單片機？
答: No.
12.問: 在未來，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: DSP 與 FPGA 的區別？性能及用途方面。
答: DSP can be reprogramble offline and online, have more flexible than FPGA.
29.問：用 dsp 硬件仿真設備調試 usb 接口板等設備時，與脫機調試，在時序及其
它方面有何不同。謝謝！
答：沒有不同。
30.問：1.3.3V的 DSP 能否與 5V的 A/D相連接 2.目前設計一個浮點的系統采用
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：1.DSP芯片內是否有單個的隨機函數指令？2.DSP內的計算速度是快的，
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：1、c5416 的 pcb 板設計是否需要考慮高速數字電路板設計？2、c5416 的
電源，EEPROM,擴展 SRAM，雙口 RAM 設計;能否介紹較詳細的管腳圖？3、剛
進行 c5416 的硬件設計和軟件設計時，是否有較好的中文或英文參考書。
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： 我想了解TMS320C240及其相關 DSP的設計方法， 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：請介紹一款專用于 FFT,數字濾波，卷積，相關等算法的 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：VC33的哪些接口可接 AD?最好是無縫連接。
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：DSP的程序編寫用匯編好還是 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：TI 公司推出了一款 TS320多媒體處理器(DSP),可以應用在安防系統,可以
開發成硬盤錄象機(DVR).再什么地方可以找到這個應用方案.
答： If you are talking about DSC24, please visit the following web
site,http://www.prodsys.com/DMDK2400/
49.問：我使用的是 TMS320LF2407，但是仿真時不能保證每次都能 GO MAIN。
我想詳細咨詢以下CMD文件的設置用法，還有 VECTOR的定義。
答：可能看門狗有問題，關掉看門狗。