A 5-6.4-Gb/s 12-channel transceiver with pre-emphasis and equalization

Author

Higashi, Hirohito ; Masaki, Syunitirou ; Kibune, Masaya ; Matsubara, Satoshi ; Chiba, Takaya ; Doi, Yoshiyasu ; Yamaguchi, Hisakatsu ; Takauchi, Hideki ; Ishida, Hideki ; Gotoh, Kohtaroh ; Tamura, Hirotaka

Author_Institution

Fujitsu Labs. Ltd., Kawasaki, Japan

Volume

40

Issue

4

fYear

2005

fDate

4/1/2005 12:00:00 AM

Firstpage

978

Lastpage

985

Abstract

A 5-6.4 Gb/s transceiver, consisting of a parallel 12-channel transmitter (Tx), 12-channel receiver (Rx), clock generators based on LC-VCO phase-locked loops (PLLs), and a clock recovery unit, was developed. The Tx has a five-tap pre-emphasis filter, and the Rx has an equalizer with an intersymbol interference (ISI) monitor. Monitoring the ISI enables fine adjustment of loss compensation. The pre-emphasis filter in the Tx and the equalizer in the Rx compensate for transmission losses of up to 20 dB at 6.4 Gb/s, respectively. Both the Tx and Rx channels, including the PLLs, are 3.92 mm² in area. The transmitter dissipates 150 mW/channel at 6.4 Gb/s when compensating for a loss of 20 dB, and the receiver 90 mW/channel when compensating for the same loss.

Keywords

CMOS integrated circuits; adaptive equalisers; filters; phase locked loops; transceivers; voltage-controlled oscillators; 12-channel receiver; 150 mW; 20 dB; 5 to 6.4 Gbit/s; 90 mW; CMOS integrated circuits; LC-VCO phase-locked loops; adaptive equalization; clock generator; clock recovery unit; five-tap pre-emphasis filter; intersymbol interference monitor; multichannel transceiver; parallel 12-channel transmitter; second-order equalizer; Adaptive equalizers; Circuits; Clocks; Filters; Intersymbol interference; Monitoring; Phase locked loops; Propagation losses; Transceivers; Transmitters; Adaptive equalization; CMOS integrated circuits; multichannel transceiver; pre-emphasis filter; second-order equalizer;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/JSSC.2005.845562

Filename

1424230