This is needed in order to always be able to fit a packet in the fifo. Writing to the fifo is done from an interrupts that fires when the fifo is half-empty, so the fifo must be twice the packet size.
This is needed in order to always be able to fit a packet in the fifo. Writing to the fifo is done from an interrupts that fires when the fifo is half-empty, so the fifo must be twice the packet size.