
R
Chapter 11
Dynamic Switching of 1000BASE-X and SGMII Standards
This chapter provides general guidelines for using the core to perform dynamic standards switching between
Typical Application
Figure 11-1 illustrates a typical application for the Ethernet 1000BASE-X PCS/PMA or SGMII core with the ability to dynamically switch between 1000BASE-X and SGMII standards.
The FPGA is shown connected to an external, off-the-shelf PHY with the ability to perform both BASE-X and BASE-T standards.
•The core must operate in 1000BASE-X mode to use the optical fibre
•The core must operate in SGMII mode to provide BASE-T functionality and use the twisted copper pair.
The GMII of the Ethernet 1000BASE-X PCS/PMA or SGMII core is shown connected to an embedded Ethernet Media Access Controller (MAC), for example the Tri-Mode Ethernet MAC core from Xilinx.
|
|
|
|
| ||
|
| or |
| |||
|
| SGMII |
| |||
| Ethernet |
| Optical | |||
| PCS/PMA or SGMII | RocketIO | Fibre | |||
|
| LogiCORE |
| |||
User Logic |
|
| ||||
|
|
|
| |||
|
|
|
|
| ||
(Ethernet |
|
|
| TXP/TXN |
| |
Internal | RocketIO |
|
| |||
Media | 10 | Twisted | ||||
GMII | Interface | |||||
Access | ||||||
|
|
| Copper | |||
Controller) |
|
|
| |||
|
|
| Pair | |||
|
|
|
| |||
|
|
|
| RXP/RXN |
| |
| Figure | Typical Application for Dynamic Switching |
|
Ethernet | www.xilinx.com | 157 |