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TI为其每款DMD都提供了配套的控制芯片组,如DPLC900(控制芯片)+DLP6500(DMD)等,并且提供了控制器(如DPLC900)的详细接口协议,以及调式用的GUI的源代码,这些资源对于使用TI或第三方公司提供的标准产品(开发板,如DLP6500EVM)似乎已经足够了,但在一些特殊应用场合,对产品的结构、尺寸有要求时(特殊行业,如军工项目还有保密要求!),就必须自己设计开发了,虽然可以购买TI的芯片组,并参考TI提供的EVM原理图,但硬件系统肯定存在一些差异,也许连接DMD的电缆也不同,这样第一次设计加工后对硬件系统就必须进行调式,调式过程中发现大部分问题都是控制器与DMD之间的,由于TI没有公开DMD的接口控制协议,无法找到原因和调式方法,调式难度增加不少,一般用户很难开发成功,这对DMD的推广应用很不利!
主要原因是DMD的控制逻辑很复杂,因为如果timing不好, DMD micromirror就会损坏.因此提供一个专用DLPC来提供专业的timing.
如果需要足够开放的系统,可以使用DLPC410(XILINX Virtex 5 FPGA).这个系统很开放的.充分满足各种不同类型的应用.
直接DMD和FPGA接口.
谢谢!我想也是这个原因,但DLPC410好多DMD都不支持的,我们想用DLP6500,就必须用DLPC900呀!如果时序要求太严,那用户就没法开发Custom产品了。
可以使用DLPC910+DLP6500, 这个和DLPC410是一样的架构, FPGA+DLP6500 DMD.
使用开发灵活的.http://www.ti.com/product/DLPC910/toolssoftware
http://www.ti.com/tool/tida-00570
The DLPC910 device is required for reliable operation of the DLP9000X and DLP6500 family of DMDs. This device enables one of the highest performing DLP® chipsets.
The DLPC910 provides a high-speed data and control interface for the DMD enabling binary pattern rates of up to 15 kHz with the DLP9000X and 11.5 kHz with the DLP6500. These fast pattern rates set DLP technology apart from other spatial light modulators and offer customers a strategic advantage for equipment needing fast, accurate, and programmable light steering capability. The DLPC910 provides the required mirror clocking pulses and timing information to the DMD. The unique capability and value offered by the DLPC910 device makes it well suited to support a wide variety of lithography, industrial, and advanced display applications.
In DLP-based electronics solutions, image data is 100% digital from the DLPC910 input port to the projected image. The image stays in digital form and is never converted into an analog signal. The DLPC910 processes the digital input image and converts the data into a format needed by the DMD for proper display. The DMD then steers the light to the location determined by the pixel data loaded into the DMD.
For complete electrical and mechanical specifications of the DLPC910, see the Virtex®-5 product specification at www.xilinx.com.
Illumination Wavelength Range (nm) |
Micromirror Array Size |
Chipset Family |
Pattern Rate, Binary (Max) (Hz) |
Component Type |
# Triggers (Input / Output) |
GPIO |
Display Resolution (Max) |
Pattern Rate, 8-bit (Max) (Hz) |
Micromirror Array Orientation |
Micromirror Driver Support |
Package Group |
Power Consumption, Typical (mW) |
Thermal Dissipation (°C/W) |
Approx. Price (US$) |