Conference Proceeding

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

Fujitsu Labs. Ltd., Kawasaki, Japan
07/2004; DOI:10.1109/VLSIC.2004.1346533 ISBN: 0-7803-8287-0 pp.130 - 133 In proceeding of: VLSI Circuits, 2004. Digest of Technical Papers. 2004 Symposium on
Source: IEEE Xplore

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 mm2. 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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Keywords

12-channel receiver
 
15 dB loss
 
5 Gbps
 
5-tap pre-emphasis filter
 
clock generators
 
clock recovery unit
 
fine adjustment
 
Gbps
 
Gbps transceiver
 
intersymbol interference
 
ISI enables
 
LC-VCO PLLs
 
parallel 12-channel transmitter
 
PLLs
 
pre-emphasis filter
 
receiver 90 mW/channel
 
Rx
 
Rx channels
 
transmission loss
 
transmitter dissipates 150 mW/channel
 

H. Higashi