Lpc2000

Hello,

For what it's worth, the TMS320F28xx and F240x DSP devices with flash
also require that you pass the clock frequency and PLL setting to the flash
algorithm.

Jerry
Signum Systems
www.signum.com
==============================================
     26 YEARS OF EMULATION SYSTEMS DESIGN: 
  8051, ARM, OMAP, 80186, 80196 and TMS320 DSPs
==============================================


----- Original Message ----- 
From: "Paul Curtis" <plc@...>
To: <lpc2000@yahoogroups.com>
Sent: Wednesday, February 22, 2006 3:59 PM
Subject: RE: [lpc2000] re: bootloader


> Hi, 
> 
> > > How else do you propose they determine the frequency in order to set
> > > internal timing dependent parameters?
> > >
> > > Robert
> > 
> > Call me naive, but I've never experienced another uC that had obvious
> > 'internal timing dependant parameters'.  Neither Avr, Msp, or Pic ask
> > for a crystal freq in their ISP applications; that's why I initially
> > assumed it was for setting the baudrate, and I don't discount that it
> > still may be.
> 
> Actually, the MSP430 *does* require that you program up the flash timing
> generator in order ro correctly clock the flash state machine--it's just
> you don't see it in the BSL.  The MSP430 bootstrap loader runs off the
> MSP430's internal DCO at approximately 1MHz from reset so it can program
> the FTG with a known oscillator frequency.  The key here is a *known
> oscillator frequency*.
> 
> --
> Paul Curtis, Rowley Associates Ltd  http://www.rowley.co.uk
> CrossWorks for MSP430, ARM, AVR and now MAXQ processors
> 
> 
>  
> Yahoo! Groups Links
> 
> 
> 
>  
> 
> 
> 
>