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

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 i...

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Bibliographic Details
Published in:IEEE journal of solid-state circuits 2005-04, Vol.40 (4), p.978-985
Main Authors: Higashi, H., Masaki, S., Kibune, M., Matsubara, S., Chiba, T., Doi, Y., Yamaguchi, H., Takauchi, H., Ishida, H., Gotoh, K., Tamura, H.
Format: Article
Language:English
Subjects:
Adaptive equalization
Adaptive equalizers
Applied sciences
Channels
Circuit properties
Circuits
Circuits of signal characteristics conditioning (including delay circuits)
Clocks
CMOS integrated circuits
Design. Technologies. Operation analysis. Testing
Electric, optical and optoelectronic circuits
Electronic circuits
Electronics
Equalizers
Exact sciences and technology
Filters
Integrated circuits
Intersymbol interference
Monitoring
Monitors
multichannel transceiver
Noise levels
Oscillators, resonators, synthetizers
Phase locked loops
pre-emphasis filter
Propagation losses
Receivers
second-order equalizer
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Transceivers
Transmitters
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Summary: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 mm/sup 2/ 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.
ISSN:0018-9200
1558-173X
DOI:10.1109/JSSC.2005.845562