Description
Yes, Arria® V GX devices support the Rate Match FIFO option when the word aligner is in manual alignment mode and the PMA-PCS interface is 20 bits wide.
Due to a mistake in Figure 5-6 of the Transceiver Custom Configurations in the Arria® V Devices handbook (PDF), the Rate Match FIFO is shown as disabled.
Resolution
This problem is fixed starting with Transceiver Customer Configurations in Arria® V Devices Handbook (9/30/2014).