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Lpc2000

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Reset problem in LPC2214

2006-01-31 by jk jlkj

Hi All,
   
  I am facing a  reset problem in LPC2214. The problem is limited to improper operation of SPI peripheral, when using a RC reset or a supervisory IC TPS3125J18. But, if i use a simple reset switch arrangement, which shorts the Reset pin to ground momentarily and then pulling the Reset pin high through a resistor of 10k then, the SPI operation seems to work properly.
  As we are developing a commercial application, this type of reset switch operation would not be desirable. 
  I am unable to understand, why only the SPI should malfunction. If at all there is a reset problem, then why should there be no problem in the functioning of the other peripherals. And also, why should the problem be resolved by the provision of a reset s/w.
   
  I hope some one can guide me in this respect.
   
   
  Regards,
  Jerome
   
   
   
   

				
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