TRDB-D5M camera strange pixel clk behaviour

Hello,

I have the D5M camera and I read in the datasheet that it should produce a clk on the edge of each new pixel . I depend on this clock to control an Avalon MM write master to write the camera output to SDRAM .

But the problem is the clock not being uniform so the avalon MM write master is dropping pixels and duplicating others is this normal ?

Also is this normal for DVAL (Anding of LVAL and FVAL) ?

I am using the original Demo setting for the DE2-115 board.