from Nuvation
      |
Features
- Supports up to OC-192 bandwidth
- Multiplexes up to 10 ports of gigabit (Gbit) Ethernet traffic into SONET
- Integrated with Altera's four-Gbit Ethernet POS-PHY Level 4 core, scalable to 10-Gbit Ethernet
- Configurable destination port address
- Complies with frame mapped generic framing procedures from the international telecommunications union (ITU)
- Supports a link layer function
- Provides gigabit Ethernet traffic statistics per port
- Plugs-and-plays with POS-PHY Level 4 or POS-PHY Level 3 cores for a variety of system solutions with different bandwidths
- Verilog HDL register transfer level (RTL) code available
- Included in the interfaces and protocols are the AtlanticTM interface, AIRbus (16-bit slave), and frame-mapped generic framing procedures (GFP)
Block Diagram
Figure 1 shows the block diagram of the GEOS-10 megafunction.
| Figure 1. Block Diagram |
 |
Description
The gigabit Ethernet over SONET 10:1 Multiplexer (GEOS-10) intellectual property (IP) core multiplexes gigabit Ethernet traffic into a single packet over SONET (POS) stream, using frame-mapped GFP. The GEOS-10 core is integrated with Altera's four-gigabit Ethernet POS-PHY Level 4 cores to interface to gigabit and SONET PHY devices.
Ethernet-to-SONET Flow Control
- Controlled by ESMUX module
- Automatic generation of GFP header to packet with destination port ID
- Pause information transfer to destination ports
SONET-to-Ethernet Flow Control
- Controlled by SEDEMUX module
- De-multiplexes traffic from SONET side into 10-Gbit Ethernet ports
- Routes packets to their corresponding ports
- Extracts pause information from control packets
- Asserts/de-asserts "pause" signal on each gigabit Ethernet port
Device Utilization Example
Table 1 lists the typical device utilization results for the megafunction.
| Table 1. Typical Device Utilization for the Megafunction | |||||
| Target Device | Speed Grade | Utilization | Performance (fMAX) |
Parameter Setting | |
|---|---|---|---|---|---|
| Logic Elements (LEs) | Embedded array blocks (EABs) | ||||
| EP2A70B724C7 | -7 | 5,338 | 0 | 85 MHz | Contact Nuvation |
Contact Information
For additional information, please contact Nuvation:
Nuvation
3590 North First Street
San Jose, CA 95134
Tel: (408) 228-5580
Fax: (408) 228-5590
E-mail: ipcores@nuvation.com
URL: www.nuvation.com
