1000base-x with rocketio transceivers, Rocketio transceiver logic, Virtex-ii pro devices – Xilinx 1000BASE-X User Manual
Page 79: Chapter 7: 1000base-x with rocketio transceivers, Chapter 7, “1000base-x with rocketio transceivers, Rocketio transceiver, Logic” in chapter 7, Chapter 7