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2.9.1. Using the 'Basic (Enhanced PCS)' and 'Basic with KR FEC' Configurations of Enhanced PCS
You can use Arria 10 transceivers to configure the Enhanced PCS to support other 10G or 10G-like protocols. The Basic (Enhanced PCS) transceiver configuration rule allows access to the Enhanced PCS with full user control over the transceiver interfaces, parameters, and ports.
You can configure the transceivers for Basic functionality using the Native PHY IP Basic (Enhanced PCS) transceiver configuration rule.
Basic with KR FEC is a KR FEC sublayer support with a low latency physical coding sublayer (PCS). The KR FEC sublayer increases the bit error rate (BER) performance of a link. This mode can run up to a data rate of 25.8 Gbps. Use this configuration to implement applications with low latency or low BER requirements or applications such as 10 Gbps, 40 Gbps or 100 Gbps Ethernet over backplane (10GBASE-KR protocol).
The Forward Error Correction (FEC) function is defined in Clause 74 of IEEE 802.3ap-2007. FEC provides an error detection and correction mechanism that allows noisy channels to achieve the Ethernet-mandated Bit Error Rate (BER) of 10-12. The FEC sublayer provides additional link margin by compensating for variations in manufacturing and environmental conditions. To distinguish it from other FEC mechanisms (for example, Optical Transport Network FEC), FEC as defined in Clause 74 of IEEE 802.3ap-2007 is called KR FEC.
Section Content
How to Implement the Basic (Enhanced PCS) and Basic with KR FEC Transceiver Configuration Rules in Arria 10 Transceivers
Native PHY IP Parameter Settings for Basic (Enhanced PCS) and Basic with KR FEC
How to Enable Low Latency in Basic Enhanced PCS
Enhanced PCS FIFO Operation
TX Data Bitslip
TX Data Polarity Inversion
RX Data Bitslip
RX Data Polarity Inversion