Hi there,

I have to route a 6 layers board by using the "Altium Designer 10" software.

Since it's the first time that I'm working with the multilayer technique I found a lot of problems:

First, in my board I use 3 powers : 1.2V, 1.8V and 3.3 V. Can I split the 3 powers into 1 power plane? If yes, how can I divide the 3 regions ( What's the considerations that I should take when I will split the plane power?)

Sencond,in this board we have a DSP with the frequency of 600 MHz and 2 DDR; I want to know if I have to take precautions about the signal integrity, if yes what's these precautions?

Finally, how can I chose the width value of tracks and the vias value between layers?

I know that I asked a lot of questions, but I feel that I'm a little blocked.

Any help will be appreciated...

Regards,