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How can we tell processor MC8640TVU1067NE is working fine or not???

Question asked by PHANIKUMAR KORLAPATI on Sep 18, 2017
Latest reply on Sep 18, 2017 by dumitru-daniel.popa

Hi all,

 

A. From the processor (MC8640TVU1067NE ) the bus address (BA) signals is not coming as per expected. Those lines is directly going to DDR Ic's only. because of those signals Bsp flashing is not happening what could be the reason processor or DDR Ic's. Actually we are using 4DDR Ic's so all DDR Ic's won't go bad at a time. please suggest me to to find out faulty Ic, one more thing all input signals which need to go for IC is reaching fine.

 

 

B. From DDR ic (part number: mt47h128m16hg-3it:a) data out line's is coming less voltage. According to data sheet of that IC the out voltage should be 1.6 to 1.8v but IAM getting 1.2v. The reason might be DDR ic only or processor only.

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