Nor flash(pc28f128p33)

Hi all,

I am using ADSP-BF609 evm board.

I am trying to erase the sectors in nor flash by using pc28f128P33_Control( CNTRL_ERASE_SECT, &pCmdBuffer );  i can able to erase sectors after this erasing able read and write into nor flash.Then i tried to erasing entire nor flash by using pc28f128P33_Control( CNTRL_ERASE_ALL, &pCmdBuffer ); after running this command i could not able to operate any operations on nor flash like read,write and erase. I am using example for nor flash from power-on-self-test. 

could anyone help me to solve this issue?

Thankyou,

Regards,

Sravanthi