Virtex 4 configuration frames

Hi,

We have the following questions related to Virtex 4 configuration
frames:

a). What is the shape and size of a frame in Virtex 4 device? In Virtex
2, each frame is contained in one vertical column of the device. But
we could not find any information related to the shape of frame in
Virtex 4.

b). How many CLBs does one frame include or vice versa?

c). In one datasheet, it is written that Virtex 4 is a tile based
device. Does it mean that each configuration frame is completely
contained in one tile?
If yes, how many frames/CLBs does one tile contain?

d). Can we use the Xilinx JBits SDK to configure a Virtex 4 frame? The
documentation for JBits 3.0 does not refer to Virtex 4 and only seems
to support Virtex 2. If it doesn't support Virtex 4, what is the
equivalent toolkit for Virtex 4 devices?

Please do help as we could not find information related to this in
Xilinx website or in newsgroups.

Thanks in advance, 
Love Singhal

I can answer some of your questions. The user guide (available from 
xilinx.com) should have more info.

A height of 16 CLB (4 BRAM, 4 DSP48, 32 single IO) Constitutes a section 
of 41 * (32 bit) words = 1312 bits = 1 frame. The frames thus do not run 
the entire column as in V2. Each block CLB*16/BRAM*4 etc does ofcourse 
need a slightly different number of frames to program it.

It takes ~22-23 frames to program 16 CLB's or 4 BRAM's.

http://www.xilinx.com/products/virtex4/literature.htm

- Vic



Love Singhal wrote:
> Hi,
> 
> We have the following questions related to Virtex 4 configuration
> frames:
> 
> a). What is the shape and size of a frame in Virtex 4 device? In Virtex
> 2, each frame is contained in one vertical column of the device. But
> we could not find any information related to the shape of frame in
> Virtex 4.
> 
> b). How many CLBs does one frame include or vice versa?
> 
> c). In one datasheet, it is written that Virtex 4 is a tile based
> device. Does it mean that each configuration frame is completely
> contained in one tile?
> If yes, how many frames/CLBs does one tile contain?
> 
> d). Can we use the Xilinx JBits SDK to configure a Virtex 4 frame? The
> documentation for JBits 3.0 does not refer to Virtex 4 and only seems
> to support Virtex 2. If it doesn't support Virtex 4, what is the
> equivalent toolkit for Virtex 4 devices?
> 
> Please do help as we could not find information related to this in
> Xilinx website or in newsgroups.
> 
> Thanks in advance, 
> Love Singhal
> 

Hi,
Thanks for the info, that pretty much answers most of the questions.
We still could not find whether we can use JBits in Virtex4.
I guess I will try this out and see if it works.
-Love

I have got compact flash to configure virtex4 on ml403 board. When I want to use it for my systemACE file to be downloaded its not working but it works nicely whne I configure the device with demo ACE files which i got along with board. can anyone help me out to use CF for configuration.