Fujitsu Laboratories has developed a 32Gbit/s data transmitter and receiver with loss equalisation circuits, which it says can be used in the fastest data links between microprocessors.
“It is possible to roughly double data communications speed between CPUs,” said Fujitsu Laboratories.
Details of the new technologies were presented at the IEEE International Solid-State Circuits Conference 2013 in San Francisco.
The amount of data traffic exchanged between CPUs and peripheral devices continues to grow with increased processor performance.
“To accommodate this high volume of traffic, inter-processor data communications speeds in today's servers have increased from a few Gbit/s to tens of Gbit/s,” said the company.
To support high data throughput typically transmitter circuits carry data from multiple channels that have been multiplexed into a single channel. The final-stage multiplexer not only consumes considerable amount of power, but also will approach the limit of its operating speed as data rates increase.
No multiplexer
Fujitsu Laboratories says it has developed a transmitter circuit that eliminates the need for a final-stage multiplex circuit (2-to-1 multiplexer).
The transmitter also uses three-level ternary modulation which can simplify high speed receiver design.
