compact flash interface with TI davinci EVM6446 (TMS320DM6446).

[venkatramanbhat]

I am using Spectrum digital EVMDM6446 (DaVinci EVM) and Spectrum digital XDS560v2 LC Traveller Emulator and Code Composer Studio 5.5.0 and using SanDisk compact flash ultra II (4.0 GB). I am trying to run the spectrum sample code "cf" which is given in spectrum digital Inc website support page (**broken link removed** ). do I need to make any changes in the code? card is detecting in function Int16 cf_card_detect( ).

I am trying to read the device ID in :

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ATA_readId( ( Uint32 )id );
 
 /* Check for valid identifier */
 
    printf( "    CF Identifier:   0x%x\n", ( id[0] << 8 ) + id[1] );
 
    if ( ! ( ( id[0] == 0x8A ) && ( id[1] == 0x84 ) ) )
 
    {
 
        printf( "    Invalid CF identifier found\n" );
 
        return 1;
 
    }

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Console data displayed is as below:

CF.CD2 Found
CF Identifier: 0x84
Invalid CF identifier found
Model number: [ ]
Serial number: [AS 0 0"9$5]
Capacity: [3962416] KBytes // for 4GB
Capacity: [3869] MBytes
Addr32 test [1-3] sector
InvAddr32 test [1-3] sector
FAIL... error code 4... quitting

here CF Identifier is read as: 0x84 instead of 0x848A. This is similar for all identifiers. I am getting only MSB of 16 bit data.
and reading only 0x84 and instead 0x8A I am reading 0x00. Not able to run ata_addr32() test too. in address test when I read PRI_ATA_DATA16 value I am getting DDR address (ie in the range 0x08000000). I have mot made any change in the sample code. whats wrong?

Refer Code: Sample code attached, same code and supporting files are given in davincievm.zip folder.

download davincievm.zip folder from **broken link removed**)

file path :davincievm\examples\cf .

ref datasheets: sandisk compact flash : http://media.digikey.com/pdf/Data Sheets/M-Systems Inc PDFs/SanDisk CompactFlash Memory.pdf

TI datasheets: SPRUE21(ATA controllers datasheet)

Regards,

Venkatraman Bhat