Hi Renjith,
Thank you for the reply and I'm sorry for the delay.
I'm using DM368EVM right now.
8bit NAND are on the EVM, so I setup the dip sw to 8 bit NAND Boot.
AECFG[2:0] = all 0, so NAND is configured as 8-bit.
I'm sorry but I don't know how to isolate in the code.
If you don't mind, can you give me an advice how to isolate in the code.
By the way, it looks like EM_D[15:8] are outputing something
during UBL are transfering U-boot from NAND to DDR2 and also when U-boot are running.
I checked the behavior by oscilloscope.
best regard,
g.f.