fir decomator 4 channel

hi,

i'm using fir compiler to implement a fir filter with 4 channel in one wire and decimation factor=16.

Now i have difficulties in managing the signal SOP, EOP, SINK_VALID and SOURCE_READY in order to make the filter work.

The sample rate of the input data is 200KHz and the system clock is 50MHz.

How could pass the parallel data that comes @200khz sample rate to my filter?

How could manage the signals SOP, EOP, SINK_VALID and SOURCE_READY?

I expect that the outputs is about 12.5KHz...

Could you help me?