TMS320F280049: Select C2000 with external interface and FPU function

Hi,

Is there any suggestion for below C2000 device selection?

1. It must has external interface, which used to extend external SRAM to exchange data with another F28335 for large data and high real time demand.

2. It's better support FPU. Not must has.

3. Within $6 cost.

After check TMS320F28004X, it support FPU but hasn't XINTF.  Am I right？Thanks.