SerIn - Baudmode calculation - Step1 question

[trastikata]

Hello,

could someone please clarify how is the Baudmode calculated. In Step 1 the manual states "(1,000,000 / Baud rate) – 20" - my question is if that 1 000 000 is a fixed value or it is oscillator's frequency dependent?

Thank you.

[keytapper]

Software produced or hardware one, definitely the timing is based on the MCU clock. But the internal clock is mostly divided by 4.

[trastikata]

Software produced or hardware one, definitely the timing is based on the MCU clock. But the internal clock is mostly divided by 4.

The confusing part is that I have a code working with an USB clock of 48 MHz - 20MHz crystal with PLL enabled and no CPUDIV. In this code I am using SerIn command with Baudmode calculated using 1,000,000 and it works - serial strings are correctly received!

That's why I am confused how actually the Baudmode is calculated?