Lpc2000

I am working with the Keil MCB2100 board.  This board has a LPC2129
processor, and is running a standard 12 MHz oscillator.  I am
interested in operating a 1 MB/s CAN network.  Is it correct that this
is not possible with a 12 MHz clock?  The maximum multiplier is 6 and
the minimum divider is 2, so it would not be possible to set the CAN
baud rate to 1 MB/s.  Is this correct?  I hope I am just missing
something obvious.

Thanks

On Saturday 23 July 2005 05:42, pearl_ixxat wrote:
> I am working with the Keil MCB2100 board.  This board has a LPC2129
> processor, and is running a standard 12 MHz oscillator.  I am
> interested in operating a 1 MB/s CAN network.  Is it correct that this
> is not possible with a 12 MHz clock?  The maximum multiplier is 6 and
> the minimum divider is 2, so it would not be possible to set the CAN
> baud rate to 1 MB/s.  Is this correct?  I hope I am just missing
> something obvious.

You have forgotten the PLL which increases the 12MHz to up to 60 MHz.

The multiplier I was refering to is the PLL multiplier, which can
provide a peripheral clock of 60 MHz.  My problem is finding a
combination that will allow the CAN to run at 1Mbaud or 10Kbaud.  I
will check my math to see.

I have founda  PLL combination (mult=4, div=3) which allows CAN baud
rates bwt 10 kBaud and 1Mbaud.  It supports most typical rates in
between, except for 800kbaud.