C2000 Transmit data problem

Hey guys,

What I wanna do is to tansmit data and receive it from TI F28069m, so I use C2000 SCI XMT to try it ,

but I face a problem that when I transmit a data like this graph, there is an additional empty data between each of them,

Please help me.

When I drag the SCI XMT out, the problem disappears.