Hi all, Does anybody know of a way to use TOD with external oscillator frequency higher than 6MHz (actually it's 80MHz)with the DSP56F827? Thank you in advance Ari Tidhar |
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using TOD with high external oscillator frequency (DSP56F827)
Started by ●February 18, 2003
Reply by ●February 19, 20032003-02-19
TOD input comes from crystal oscillator rather than PLL. So even PLL stop working, TOD still can count input pulse from crystal oscillator. If you use external oscillator, you should run above 6Mhz. But you must carefully connect your clock on correct pin. Please see the following comment from Motorola. "If external clock frequency is greater than 4Mhz and Time of Day module is in use, Connect clock source to XTAL and EXTAL must be connected to VDDA/2. Customer can use resistor divider to get VDDA/2." Charlie Wu --- "atid2 <>" <> wrote: > Hi all, > > Does anybody know of a way to use TOD with external > oscillator > frequency higher than 6MHz (actually it's 80MHz)with > the DSP56F827? > > Thank you in advance > Ari Tidhar __________________________________________________ |