We have had much grief trying to get SD support to work.
Almost a year ago I finally got the following response from someone at Ti:

'"Dear Mr. Pignon,

Thank you for contacting Texas Instruments. Your request has been received and case number 3177634 has been assigned to your inquiry.

We are sorry for the long delay in answering your question. We just received today form our sortware development team the following information.

Q:
[Trying to write to our SD card, on port 0. Can't get communication with it working, despite much programming trickery. The documentation and app notes are full of horrible inconsistencies and simple mistakes. Can you direct us to some good source of help, e.g. sample code which has actually been tested recently on a real system? Talking about the C5509 144 Mhz DSP.]
A:
There is currently no CSL support for SD card.  The source code provided in the application note is outdated and needs a couple of code updates.
There are some changes with the latest CSL, therefore we are providing you with the updated source code.
This code is included in a project that references the latest CSL in Code Composer Studio 2.2.
Please continue to monitor the WEB site for other updates.

Best regards,

Matthias Schmitt
Application Support Engineer
Texas Instruments
European Product Information Center
http://www-k.ext.ti.com/sc/technical-support/pic/euro.htm "

Haven't seen any relevant updates on the site as yet. Has anybody?

Paul Pignon, CTO
Borthwick Pignon Solutions
http://bps.co.ee
Tartu Science Park
Riia 185
51014 Tartu
Estonia
Office +372 7 302641
Mob   +372 53 823467>-----Original Message-----
>From: Chad Albrecht [mailto:c...@yahoo.com]
>Sent: Wednesday, 10 Mar, 2004 00:11
>To: c...@yahoogroups.com
>Subject: [c55x] CSL debugging>Is it possible to get (or compile) the 5509 CSL for source (C)
>debugging in CCS 2.20?  I am investigating the support of SD cards by
>the MMC/SD controller.
>
>Thanks!
>Chad>
>