Can anyone provide me with the verilog codes for SECURE DIGITAL MEMORY CARD Controller. It is said to be a very confidential project.Please if anyone involved in such a design.Please help me with ur design. I'am Thankfull in advance, Pranesh MD Yahoo! India Matrimony: Find your life partneronline. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.opencores.org/forums.cgi/cores/attachments/20041018/3b8915c5/attachment.htm

I do not have the verilog codes but I do know something about the SD
protocol..

It's actually not a confidential project at all.. But you will need to get the
specs document... which is incidentally available to members of the SD
group... to get a membership will cost you a couple of thousand US dollars
(if i'm not mistaken)...

On Monday 18 October 2004 19:43, pranesh prakash wrote:
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Shawn Tan Ser Ngiap wrote:


I think you might have better luck with the MultiMediaCard
specification. From what I can gather, the latest MMC spec is
equivalent to SD minus the facism unit.

*Sigh* I wish either was as easy to get as the CompactFlash spec.

-hpa

Sir, I've to implement the SD memory host within a XILINX COOLRUNNER II 2c128 device. I need to implement the a. command path unit. b. datapath unit c. control unit d. Card detect unit. Now I ve a problem. 2c128 has only 128 macrocells. i.e., 128 flip flpos. CRC logic itself takes (16*4) in datapath unit and (7*1) in command path unit. apart from this I need to implement Command/Response register. and moreover the control State machine needs some logic. How can I ensure It would fit in ONE COOLRUNNER II 2c128 by reducing some of its features. Its actually a project fron XILINX. Please help. thanks in advance. Pranesh MD "H. Peter Anvin" hpa at zytor.com> wrote:Shawn Tan Ser Ngiap wrote: I think you might have better luck with the MultiMediaCard specification. From what I can gather, the latest MMC spec is equivalent to SD minus the facism unit. *Sigh* I wish either was as easy to get as the CompactFlash spec. -hpa _______________________________________________ http://www.opencores.org/mailman/listinfo/cores Yahoo! India Matrimony: Find your life partneronline. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.opencores.org/forums.cgi/cores/attachments/20041021/8637fb4c/attachment-0001.htm

Sir, I've to implement the SD memory host within a XILINX COOLRUNNER II 2c128 device. I need to implement the a. command path unit. b. datapath unit c. control unit d. Card detect unit. Now I ve a problem. 2c128 has only 128 macrocells. i.e., 128 flip flpos. CRC logic itself takes (16*4) in datapath unit and (7*1) in command path unit. apart from this I need to implement Command/Response register. and moreover the control State machine needs some logic. How can I ensure It would fit in ONE COOLRUNNER II 2c128 by reducing some of its features. Its actually a project fron XILINX. Please help. thanks in advance. Pranesh MD "H. Peter Anvin" hpa at zytor.com> wrote:Shawn Tan Ser Ngiap wrote: I think you might have better luck with the MultiMediaCard specification. From what I can gather, the latest MMC spec is equivalent to SD minus the facism unit. *Sigh* I wish either was as easy to get as the CompactFlash spec. -hpa _______________________________________________ http://www.opencores.org/mailman/listinfo/cores Yahoo! India Matrimony: Find your life partneronline. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.opencores.org/forums.cgi/cores/attachments/20041021/8637fb4c/attachment.htm

----- Original Message ----- From: pranesh prakashpmdvlsi at y...> To: Date: Thu Oct 21 07:02:41 CEST 2004 Subject: [oc] Secure Digital Memory Card Controller... there is no magic reduction possible, if you need SD card support in 4 bit mode, you need 64 flipflops for that what is half the C128 I have made a MMC card application that fits into total 21 Coolrunner PLD cells some info is at http://www.openchip.org/bootx SD card is a little bit more complicated, also if you need to support both MMC and SD cards you need some additional logic as some commands are different. given my experience with the MMC card I would say it is possible to implement a minimalist SD card host in C128, but you would need almost full 100% utilization of the chip. And you can only support 8 bit command/datapath. hm.. you said it "from Xilinx" so they want to have this design? Xilinx promised they will have SD Host IP core, but they never made it public, so I assume they want it now :) antti