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Unable to Read and write in External NAND[AM3517].

hrishikesh choudhary
Expert 1390 points
Other Parts Discussed in Thread: AM3517

Dear All,

We have a custom board which has AM3517 controller interfaced to External NAND through FPGA.

The Control signal and Data signal are routed through FPGA to NAND. Currently I am trying to Read ID from the NAND . But whatever value i write to the NAND in the form of Command is reflected back as Data.

Details of External NAND : MT29F32G08AFABA.

Configuration :

OUT_REGL(GPMC_CONFIG, 0x00000002);
 
   OUT_REGL(GPMC_CONFIG1_1, 0x00010813);
   OUT_REGL(GPMC_CONFIG2_1, 0x001F1F00); 
   OUT_REGL(GPMC_CONFIG3_1, 0x00030383);
   OUT_REGL(GPMC_CONFIG4_1, 0x1A001A00);
   OUT_REGL(GPMC_CONFIG5_1, 0x001D1F1F);
   OUT_REGL(GPMC_CONFIG6_1, 0x1D000505);
   OUT_REGL(GPMC_CONFIG7_1, 0x00000C5f);
 
   OUT_REGL(GPMC_CONFIG, 0x00000010); 

I am using CS1 . Asynchronous Mode interface.

Please let me know some links and Document that can Help me in Understanding and interfacing the NAND.

We have checkd the Data Pins by Probing Individually. The reset command and Status are ok.

I have been through this Links but nO LUCK : http://e2e.ti.com/support/dsp/sitara_arm174_microprocessors/f/416/t/161397.aspx

 

Thanks and Regard's

Hrishikesh