CFI Power Cycle Sequence

Hi

I have trouble with the sampling of ATA_SEL line during POR.

I am trying to run the CFI in PC-ATA IO Mode using PIOs driving the CFI pins ( well most of them)

Hence i am trying to Power off the CF Card and wait for a couple of seconds before switching the power on.

I figured this should let me setup my ATASEL line to 1 and then Power on the chip,

so that the chip would sample 1 on ATASEL and switch to PC-mem Mode.

But even after Switching power off for 10 sec and then switching it back on, any registers i set previously are not getting reset to their Power on Defaults.

What am i doing wrong ???

BTW i am using Nios Stratix Dev Kit 1s10

My code :-->

void init()

{

printf("\nWaiting for card to be plugged in");

while(RD(CF_DETECT_BASE)==1)

;

printf("\nCard Detected ");

printf("\nPower Cycling Card");

WR(CF_ATASEL_BASE,1);

WR(CF_POWER_BASE,0);

printf("\nWaiting 10 Sec to take care of Leakage Currents");

usleep(10000000); //10 sec

WR(CF_POWER_BASE,1);

printf("\nRestarting:: Waiting 1 Seconds for CF Power Supply Ckt To Stabilise");

usleep(1000000); //1 sec

WR(CF_RFU_BASE,0);

WR(CF_IORD_N_BASE,1);

WR(CF_IOWR_N_BASE,1);

WR(CF_WE_N_BASE,1);

WR(CF_ATASEL_BASE,0);

WR(CF_CS_N_BASE,0);

SW(CF_SPKR_BASE,0);

SW(CF_DATA_BASE,0);

while(RD(CF_SPKR_BASE)==0)

;

printf("\nCard Powered up Successfully");

}

regards

Pavan