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ARM Sitara AM3892 Booting Issue

Other Parts Discussed in Thread: AM3892


 We are using ARM AM3892 Sitara processor in our customized design,

We have two Boot mode option,1) NAND Boot, 2) SD Boot,

We have configured to SD Boot mode in our design,

We are getting SD clock from ARM Device during POR,

But ARM device is not getting booted,

Please clarify what this means about PORn and RESETn Pins in Data sheet,

( Once the power supplies and the input clock source are stable, the PORn  pin must remain asserted
(low) for a minimum of 32 DEV_MXI cycles and  RESETn pin must be asserted (low) for a minimum of 32 DEV_MXI cycles)

Please help on this issue ASAP.