Bridgeable POS-PHY solutions from 155 Mbps to 10 Gbps
10 October 2001
Programmable Logic
Altera has announced the availability of the POS-PHY Level 4 MegaCore logic function with Altera's Atlantic on-chip interface. Optimised for Altera's APEX II devices, the POS-PHY Level 4 interface is a 10 Gbps chip-to-chip interface for next-generation Packet-over-SONET (POS) Internet traffic, Ethernet, as well as ATM applications.
Altera's Atlantic interface is a scalable, high-speed on-chip interface for packet and cell transfer. According to the company, the Atlantic interface allows designers to quickly and easily build bridges between incompatible devices, as well as facilitate the user's integration of intellectual property (IP) with a simple, clearly defined, and supported interface.
The Atlantic interface is designed as a datapath bus for packet transfer between communications IP. Defined with minimal overhead, the Atlantic interface utilises approximately 10 control signals in addition to a variable width data bus, and an optional address bus. The control signals include parity, start-of-packet, end-of-packet, error, empty, enable or data valid or data available signals. The Atlantic interface utilises a simple four-way handshake as flow control and is scalable all the way up to 40Gb/s and beyond.
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