WD1933 Datasheet | Western Digital

WESTERN DIGITAL c oRp o R A T/ oN WD1933 Synchronous Data Link Controller Features .. HDLC, SDLC, ADCCP AND CCITT X.25 PATIBLE .. LOOP DATA LINK CAPABILITY o FULL OR HALF DUPLEX OPERATION .. DC TO 1.5 MBITS/SEC DATA RATE - DC TO 1.0 MBITS/SEC DATA RATE (SDLC LOOP MODE) .. PROGRAMMABLE/AUTOMATIC FCS (CRC) GENERA- TION AND CHECKING .. PROGRAMMABLE NRZI ENCODE/DECODE .. FULL SET OF MODEM CONTROL SIGNALS .. DIGITAL PHASE LOCKED LOOP .. FULLY PATIBLE WITH MOST CPU'S .. MINIMUM CPU OVERHEAD .. ASYNCHRONOUS/SYNCHRONOUS MULTI-PROTO- COL BOARD CAPABILITY (PIN PATIBLE WITH WD 1931) o FULLY TTL PATIBLE .. SINGLE +5V SUPPLY .. ERROR DETECTION: CRC, UNDERRUN, OVERRUN, ABORTED OR INVALID...