Hi there,
I hope you are doing well,
I have an idea for my master thesis. So, i want to make a communication protocol analyzer and monitor the datas on PC via software i coded
For the first stage, i need a kind of data acquisition system like below(or in the attached files):

Communuciaton bus i am interested in has 2 mbps bitrate, and manchester coding (±5V differantial voltage).
But i have no experience about high speed communcation signal processing. What do you suggest for? Should i use some kind of ADC/tranceiver or process the data directly via microcontroller with high sampling rate? In that case, is there any microcontroller you could propose with high msps?
Edit: By the way, writing ADC may cause misunderstanding. Scope of my evaluation is
manchester-high,
manchester-low and
non-data(means no 1 or 0).Thanks in advance,