the error of the sd with qsb program

[ylw]

i designed one design that is full of references to the QSB,.and

one board can boot from sd and works fine,but the other board is

not ok .i uused the external power boxeri to supply the power and

the power is 12v,and i used one dc-dc to make 5v.if not plug the

sd into the socket,the power is 12v,but when plug the sd into the

socket ,the power is down to 5v.and when i plug the sd (no

program) into the socket, the power is 12v and all power of the

imx53 is fine .so i want to know what happens .thanks a lot !

[jimmychan]

if one board is working fine but the other one is not working well, most likely is a hardware issue. Please double check all the pmic voltage outputs are correct and check the SD part of circuit.

[ylw]

hi ,i guess the problem is MICROSD part of circuit.and if i fix it ok ,i will try to boot the board by sd3.thank you again .

在 2013-01-09 16:23:26，jimmychan <admin@community.freescale.com> 写道：

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the error of the sd with qsb program

created by jimmychan in i.MX Community - View the full discussion

if one board is working fine but the other one is not working well, most likely is a hardware issue. Please double check all the pmic voltage outputs are correct and check the SD part of circuit.

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