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Rahul,

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There are 4 components in a chipset: a DMD, a digital controller (DDC), an EEPROM and 1or 2 analog driver(s) DAD2000. While both 0.7XGA and 0.55XGA DMDs are supported on the Discovery Starter kit, the DMD has to be purchased in a chipset which contains the 4 components. You may find more information on the website www.dlpdiscovery.com.

The type of the DMD is the packaging type. A picture of the different DMD packaging may also be found online at the same location.

I am still puzzled. What is the difference between Pixel Architecture is SPD with DarkChip2 and Pixel Architecture is FTP with DarkChip3?

Also provide me following details.

Can we have the schematic digaram for 0.55" DMD at the DVI n VGA input and out portion ? can the evalution kid change the out frame rate ?

DarkChip2 and DarkChip3 refer to the contrast ratio levels that are supported through reduction of the offstate light. The Pixel architecture is set on the type of DMD. This can not be changed.

The Discovery kit does not have DVI or VGA input. It only has 32/64 bits of LVDS data on the input side at 400MHz DDR clock. The output frame rate can reach up to 32K binary frames per second.

What is the difference between Dark Chip 2 and DarkChip3?

Also address me the 32K binary frames per second - This means What is the frame size(1024x768 )?

Is it possible to reach output frame rate of 4008 frames per second for  monochrome? and 4008f/s x 3 for RGB frames?

Discovery Starter kit has on board memory?

How we can pass the image data to DMD If we have image date from our PC.

Regards,Rajiv

Rajiv,

Could you please tell me where you saw the information regarding the Dark Chip2 and Dark Chip3 information? That is not something I am familiar with on the Discovery kit front.

The 32k binary fps is refering to the XGA resolution (1024x768). This means a single bit depth (binary).

The frame rate for monochrome or RGB is dependent on the number of bit planes and number of colors you are wanting to show. The fps will be divided down by these numbers.

The Discovery 4100 has an on board memory interface but does not contain actual memory. You can connect up to 4GB memory through that interface.

There are several ways to pass the image data to the DMD. You can use the Applications FPGA on the D4100 board or store the images in the memory. There is also a GUI available (D4100 Explorer software) to load a bit image directly from your PC. However, this GUI option is considerably slower (~20fps).

If you are looking for specific help on implementations of transfering from your data through either the FPGA or the memory to the DMD, please contact one of the VARs listed on the www.dlpdiscovery.com website.

Dear Sir/Madam,

I do not have an idea about Dark Chip2 and Dark Chip3 information but i got the information in forum.

The 32k binary fps is referring to the XGA resolution (1024x768). This means a single bit depth (binary)

We would prefer to caluculate the how many frames can be deliverd per second from single DMD.Is it possible to provide us the simple calculation example based on 1024x768? Pleae do the needful.

Regards,

Rajiv.

Rajiv,

The frame rate can be calculated in the following fashion:

Total time to load 1 frame = clock period * #clks/row * #rows/DMD.
In the case of a XGA DMD, it takes 16 clocks to load 1 row and there are 768 rows per DMD.

The time to do a global reset is 4.5us+8us = 12.5us. 

The frame rate is 1/(total time to load 1 frame + total time to do a reset).

Note: The time it takes to reset can be shortened if phased (or staggered reset) is done. i.e. you may reset 1 block while loading data to another block.