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Re: [lpc2000] Re: External clock on LPC2131

2005-10-20 by Alex_Rambler

Hi Dave B

Why do you use 12.288MHz clock? Do you connect audio codec to LPC2131?

d> Hi Marcio,
d> Yes, that mode of operation is supported.  I have been running a 
d> LPC2131 with an external 12.288MHz clock that is buffered and feeds 
d> everything on my board.  Works fine.

d> See page 31/32 of the manual.  There is some info there although I 
d> agree it is not very clear.  Just leave the unused pin 61 (XTAL2) 
d> open.  Also, make sure you use the recommended (100pF) coupling cap 
d> for XTAL1.
d> See figure 7a for slave mode.

d> Good Luck,
d> Dave B.

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