MC68194 MOTOROLA | Alldatasheet
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@) MOTOROLA Mc6s194 Technical Summary Carrierband Modem (CBM) The bipolar LS! MC68194 Carrierband Modem (CBM) when combined with the MC68824 Token Bus Controller provides an IEEE 802.4 single channel, phase-coherent a carrierband Local Area Network (LAN) connection. The CBM performs the Physical Layer function including symbol encoding/decoding, signal transmission and reception, and FN SUFFIX physical management. Features include: PLCC © Implements IEEE 802.4 single channel, phase-coherent Frequency Shift Keying (FSK) CASE 778-02 physical layer including receiver blanking. © Provides physical layer management including local loopback mode, transmitter enable, and reset. © Interfaces via standard serial interface to MC68824 token bus controller. © Crystal controlled transmit clock. © Recovery of clocked data through phase-locked loop. @ Meets IEEE 802.4 standard +4.0 dBmV to +10 dBmV receiver signal threshold window. FJ SUFFIX © RC controlled Jabber Inhibit Timer. eA SEROUAD © Single +5.0 volt power supply. © Available in 52-lead PLCC or 52-lead cerquad (same footprint as PLCC) packages. © For more information see data sheet MC68194/D. PIN ASSIGNMENTS z225 838 2 58 2232222845822 8 Somos axsyme [] @ 1 461] vemc2 nc 9 4107 vemcr Vectm C10 44] vex Geom (11 43 [] GNo Reset [] 12 42 {] cew TxsyMo [] 13 MC68194 4] Rew Txsymt (4 CBM 40 [0 setew Txsyme [] 15 (PLCC) 33 f] Gno ‘smear [] 16 38 [J RxINt Txcud (] 17 37 [] RXIN Jas (J 3 36 [] FDBK* corois* [] 19 35 [] Fak Vec-0sc ] 20 tf] TaResHou uvzoewesaereyo wun fe aa ete 2228833523828 FE gRGREES° Bo & 8 SG407/D Rev. 2 Page 91