A CMOS 510 K-transistor single-chip token-ring LAN controller (TRC) compatible with IEEE802.5 MAC protocol. - Akira Kanuma; Toshiyuki Yaguchi; Koichi Tanaka; Eiichi Katsumata; Katsuhito Fujimoto; Yuuichi Miyazawa; Shinichi Iida; Takeshi Yamamoto (IEEE J. Solid State Circuits, 1990)