Gigabit Ethernet to SONET OC-192 Multiplexer
(for Cortina Systems Chipset)
Features | Block Diagram | Ingress | Egress | 
Description
The GEOS-10i IP core multiplexes up to 10 channels of GE traffic into a single Packet over SONET (POS) stream, using frame-mapped GFP (Generic Framing Procedures). A GEOS-8i variant has also been developed and implemented for 8xGbE to SONET. The GEOS-10i core is designed to interface with the Cortina® IXF1110 10-Port Gigabit Ethernet MAC and IXF1810x family of 10Gbit/s LAN/WAN Physical Layer Devices, using POS-PHY Level 4 cores.
Features
- Supports up to OC-192 bandwidth
- Multiplexes up to 10 ports of Gigabit Ethernet traffic into SONET
- Supports Jumbo Packets
- Configurable destination port address
- Complies with Frame Mapped Generic Framing Procedures from ITU-T
- A Link Layer function
- Provides GbE Traffic Statistics per port
- Plug & Play with POS-PHY Level 4 or POS-PHY Level 3 cores for variety of system solutions with different bandwidths
- Optimized for integration with a 10-Port Gigabit Ethernet MAC (Cortina® IXF1110, PMC-Sierra PM3388 S/UNI® - 10xGE) and a 10Gbit/s LAN/WAN Physical Layer Device (Cortina® IXF1810x family, PMC-Sierra PM5390 S/UNI® -9953), using POS-PHY Level 4 cores
- Verilog HDL register transfer level (RTL) code available
- Available on Altera and Xilinx platforms
Ingress: Ethernet-to-SONET Data Flow
- Controlled by ESMUX module
- Automatic generation of GFP header to packet w/ destination port ID
- Pause information transfer to destination ports
Egress: SONET-to-Ethernet Data Flow
- Controlled by SEDEMUX module
- De-multiplexes traffic from SONET side into 10 GE ports
- Routes packets to their corresponding ports
- Extracts pause information from control packets
- Asserts/de-asserts "pause" signal on each GE port
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