标题: TI DSP精华问答(50个问题) [打印本页] 作者: 电子黑 时间: 2016-6-27 14:35 标题: TI DSP精华问答(50个问题) 1.问: C6712怎样访问 I/O空间?
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.问: TMS320C6712 的 32 位浮点特性与以往推出系列相比,有哪些优势,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.问: TI 能否尽可能将闪存集成在今后的 DSP产品中,以减少外设和提高线路精
度?
答: TI 具备将 FLASH 集成到 DSP中的能力。但是不同的用途有不同的要求。所
以我们针对用量较大的客户会进行集成以满足客户要求。
4.问: Is 6712, 6711 and 6701 all pin compatible?
答: Yes, they are all compatible.
5.问: 以 5409 为例,很多 DSP 产品在使用前必需进行内存分配,该工作目前由
用户自己进行,虽提供了很大的灵活性,但对经验较少的人来说会耗费很多不必
要的精力,所以请问 TI 能否在发货时就为芯片提供标准的配置文件?
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.问: 请问 DSP与 CPU、MPU有什么区别?
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.问: TI 能否为其 DSP产品提供更加灵活的外设以满足多样的应用需要?
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.问: 请问"数字信号处理器"的对象是什么?
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.问: TI的DSP产品的C代码编译效率低, 常使开发者感到其结果不能达到预期,
请问 TI 有无应对之策?(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.问: TI 公司的 DSP 有什么特点?即在处理速度、存储量、接口以及软件编程
等方面有什么特点?
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.问: DSP是不是扩大了功能的单片机?
答: No.
12.问: 在未来,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.问: DSP 与 FPGA 的区别?性能及用途方面。
答: DSP can be reprogramble offline and online, have more flexible than FPGA.
29.问:用 dsp 硬件仿真设备调试 usb 接口板等设备时,与脱机调试,在时序及其
它方面有何不同。谢谢!
答:没有不同。
30.问:1.3.3V的 DSP 能否与 5V的 A/D相连接 2.目前设计一个浮点的系统采用
哪一种芯片较好?
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.问:1.DSP芯片内是否有单个的随机函数指令?2.DSP内的计算速度是快的,
但是它的I/O口的交换速度有多快呢?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.问:1、c5416 的 pcb 板设计是否需要考虑高速数字电路板设计?2、c5416 的
电源,EEPROM,扩展 SRAM,双口 RAM 设计;能否介绍较详细的管脚图?3、刚
进行 c5416 的硬件设计和软件设计时,是否有较好的中文或英文参考书。
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.问: 我想了解TMS320C240及其相关 DSP的设计方法, 用于全桥电源的 PWM
控制,谢谢。
答: You could download our Developer"s Kits from the following web
page,http://www.dspvillage.com/c2000devkit
41.问:请介绍一款专用于 FFT,数字滤波,卷积,相关等算法的 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.问:VC33的哪些接口可接 AD?最好是无缝连接。
答:You could find recommended data converters for VC33 from the following web
site, http://www.ti.com/sc/docs/msp/c3x.htm
47.问:DSP的程序编写用汇编好还是 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.问:TI 公司推出了一款 TS320多媒体处理器(DSP),可以应用在安防系统,可以
开发成硬盘录象机(DVR).再什么地方可以找到这个应用方案.
答: If you are talking about DSC24, please visit the following web
site,http://www.prodsys.com/DMDK2400/
49.问:我使用的是 TMS320LF2407,但是仿真时不能保证每次都能 GO MAIN。
我想详细咨询以下CMD文件的设置用法,还有 VECTOR的定义。
答:可能看门狗有问题,关掉看门狗。