
Recommended initialization procedure for MAX3955 and MAX3956 devices from Maxim, app note can be found here:
The MAX3955 and MAX3956 devices must be initialized properly to guarantee correct operation. This application note describes the recommended initialization procedure for these devices.

Is anybody making fiber modules? This app-note is quite a bit out of the normal person’s league…
Who cares? Someone can now tick that little checkbox next to “App notes on the weekend”.
Btw, the post even fails to mention what kind of devices those MAX3955 and MAX3956 are.
At least the quote shares some ancient wisdom: ‘devices must be initialized properly to guarantee correct operation’.