- Vitesse Semiconductor Corp. The VSC7124 is a five-channel bypass element. The VSC7127 and VSC7129 include retiming circuits. Both offer six-port bypass interfaces and the FibreTimer clock-recovery unit, which operates in either a repeater or retimer mode. As a repeater, the block recovers the data and retransmits it to a recovered clock, reducing jitter and latency. In the retimer mode, the recovered data is re-transmitted synchronously to a local reference clock, totally eliminating accumulated jitter but adding some latency to the data. These two models also provide an analog/digital signal detect unit.
- Dallas Semiconductor Dual Digital Potentiometer Serves Gigabit Network Transceivers: In addition to containing a pair of digitally controlled potentiometers, the DS1845 packs 256 bytes of EEPROM to retain its control settings. Targeted for use with gigabit network transceivers and other systems that need periodic calibration or current-level adjustments, this dual potentiometer reduces system component count and space requirements...
- Advanced Hardware Architectures Inc., FEC Chip Cuts Required Bandwidth And Increases Data Throughput: Based on the enhanced Turbo Product Code technology (eTPC), the Astro OC-3 forward error correction (FEC) IC lets designers decide what combination and level of benefits works best for their application. With this device, designers can reduce their required bandwidth by two times. Or, they can double the data throughput. The OC-3 also makes it possible to increase range by 40%, reduce antenna size by 30%, reduce transmitter power by two times, or cut the receiver's required noise figure by 3 dB...
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