I see the mega4808 does not allow connection of a main xtal (other than a 32KHz low freq xtal osc). so if i want an oddball freq (it is going to be 10.55 MHz) , I need to pump in an external clock source. Ok, fine.
However, I can't presently use the EXTCLK pin, can I use the TOSC1...described as: Instead of a crystal oscillator, TOSC1 can be configured to accept an external clock source. AND Alternatively, an external digital clock can be connected to the TOSC1 pin.
Great!! However, later, where it talks more about it, it says:
Either a crystal is connected to the pins TOSC1 and TOSC2, or an external clock running at 32 KHz is connected to TOSC1. WELL, I don't want 32KHZ, I want 10.55 MHz , Does this pin have a 32 KHz freq limit?
Note that I have no interest in using the RTC, I just need straightforward clocking of the AVR.
So is the proposed hookup viable? This diagram seems to indicate so: