hd-SDI dual link

Hello,

i want to use the SDI core from Altera to build an HD-SDI dual link TX.

The source of images are coded in 4:2:2 10 bit so i'm wondering how to built the dual link streams?

In dual link HD-SDI we have two link. Each one has two stream; one for Y data and one for C data. So we have 4 streams at 74.25 MHZ

I would like to know how the YCbCr data from my source must be divided in the 4 streams.

Thanks