5-6.4 Gbps 12 channel transceiver with pre-emphasis and equalizer

H Higashi,S Masaki,S Matsubara,M Kibune,Y Doi,H Takauchi,H Ishida,H Yamaguchi,H Tamura,K Gotoh,T Chiba

doi:10.1109/vlsic.2004.1346533

5-6.4 Gbps 12 channel transceiver with pre-emphasis and equalizer

H Higashi, S Masaki + Show 9 more

https://doi.org/10.1109/vlsic.2004.1346533

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Publication Date: Jun 17, 2004

Citations: 14

Affiliation: Fujitsu (Japan)

#Clock Recovery Unit #Intersymbol Interference + Show 8 more

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Abstract

A 5 Gbps to 6.4 Gbps transceiver consists of a parallel 12-channel transmitter (Tx), 12-channel receiver (Rx), clock generators based on LC-VCO PLLs, and a clock recovery unit. The Tx has a 5-tap pre-emphasis filter, and the Rx has an equalizer with intersymbol interference (ISI) monitor. Monitoring the ISI enables a fine adjustment of the loss compensation. The pre-emphasis filter in the Tx and the equalizer in the Rx can compensate for a transmission loss of up to 20 dB and 15 dB at 6.4 Gbps, respectively. The areas of the Tx and Rx channels including the PLLs are both 3.92 mm/sup 2/. The transmitter dissipates 150 mW/channel at 6.4 Gbps when compensating for a loss of 20 dB, the receiver 90 mW/channel when compensating for 15 dB loss.

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