PMA 64B66B Gearbox Core
The PMA 64B66B Gearbox core is designed to bridge both the 64-bit to 66-bit PCS encoding IP and the PMA Direct 64-bit interface. The PMA 64B66B Gearbox core is responsible for converting the incoming data from the PCS encoding IP into the physical medium attachment (PMA) interface for the TX direction and vice-versa.
PMA 64B66B Gearbox Core Block Diagram
Features
- Converting 66-bit to 64-bit data stream for TX direction
- Converting 64-bit to 66-bit data stream for RX direction
- Single clock with a valid and ready handshake that supports data rate from 6 Gbps to 16 Gbps
- Maximum frequency targeting 250 MHz + 15% margin
- Gearbox Direction parameter for either TX or RX, or both
User Guide