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Ethernet 40G PCS
Design IP
Overview

SmartDV’s Ethernet 40G PCS (Physical Coding Sublayer) IP Core delivers the essential link-layer processing required for 40 Gigabit Ethernet systems. Based on IEEE 802.3ba specifications, it includes 64b/66b encoding and decoding, block synchronization, lane alignment, and support for forward error correction (FEC) when used with external FEC logic.

The core supports scalable integration into multi-lane systems and connects seamlessly with 40G MAC and PHY layers through XLGMII or similar interfaces. Its efficient architecture ensures reliable high-speed data transfer with low latency and high signal integrity.

Designed for flexibility, the IP core is highly configurable to meet specific design requirements, supporting both ASIC and FPGA implementations while optimizing for area, power, and performance. Its compact and modular design enables quick deployment in various high-bandwidth networking solutions.

Ethernet 40G PCS
Benefits
  • PMA Interface with data widths: 32 Bits, 40 Bits
  • 64b/66b encoding and decoding for transmit and receive paths
  • Data scrambling on the transmit path and descrambling on the receive path
  • Lane Distribution across 4 Lanes for 40Gpbs
  • Block synchronization
  • Bit Error Rate (BER) monitoring
  • Loopback functionality
  • SmartDV’s Ethernet 40G MAC can be used for a complete design solution with this core
Compliance and Compatibility
  • IEEE 802.3.2022 Ethernet Specification Clause 82 40GBASE-R and 40GBASE-KR4 PCS
  • IEEE 802.3.2022 Clause 108 RS FEC
  • IEEE 802.3az Energy Efficient Ethernet (EEE)
  • IEEE 802.3.2022 Clause 45 MDIO
  • Optional IEEE 802.3.2022 Clause 74 RS BASE-R FEC
  • Optional IEEE 802.3.2022 Clause 73 Auto Negotiation for Backplane Ethernet
  • Optional IEEE Standard 802.3.2022 Clause 72 Link Training
  • Compatible with all major EDA synthesis, simulation, and linting flows