Title :
A 16 Mb/s data detector and timing recovery circuit for token ring LAN
Author :
Scott, J. ; Starke, R. ; Ramachandran, R. ; Pietruszynki, D. ; Bell, S. ; McClellan, K. ; Thompson, K.
Author_Institution :
AT&T Bell Labs., Reading, PA, USA
Abstract :
A 1.75- mu m CMOS interface circuit for a differential Manchester-coded 16-Mb/s token-ring local area network (LAN) is presented. The chip provides fixed gain and slicing functions as well as integrated clock recovery, data timing, and lock detection. When it is used in tandem with a digital controller/driver chip, a complete 16-Mb IEEE 802.5-1988 standard-compatible token-ring transceiver is realized. Block-level functionality of the interface circuit is discussed, following by more detailed subcircuit descriptions and a presentation of measured results. The measured jitter transfer function of the PLL phase-locked to a high-transition-density data stream is shown.<>
Keywords :
CMOS integrated circuits; data communication equipment; detector circuits; digital communication systems; token networks; transceivers; 1.75 micron; 16 Mbit/s; CMOS interface circuit; IEEE 802.5-1988 standard-compatible; PLL; computer networks; data detector; data timing; differential Manchester-coded; digital communication equipment; fixed gain; integrated clock recovery; jitter transfer function; local area network; lock detection; slicing functions; timing recovery circuit; token ring LAN; token-ring transceiver; Clocks; Detectors; Digital control; Driver circuits; Integrated circuit measurements; Local area networks; Semiconductor device measurement; Timing; Token networks; Transceivers;
Conference_Titel :
Solid-State Circuits Conference, 1989. Digest of Technical Papers. 36th ISSCC., 1989 IEEE International
Conference_Location :
New York, NY, USA
DOI :
10.1109/ISSCC.1989.48237
