Interface FIFOs - 1.1 English

All interfaces on the SD-FEC Integrated Block have clock-domain-crossing (CDC) FIFOs. The FIFO depths are given in the following table. While the inner core enforces the DIN/DOUT_WORDS dependencies, the FIFOs can fill such that a number of transfers up to the FIFO depth can occur into DIN before being blocked by a lack of transfers on DIN_WORDS. In particular, this should be noted if interfaces are being disabled for some reason, the data in the FIFOs is still processed.