COM5025 Datasheet | SMSC

STANDARD MICROSYSTEMS CORPORATION /LPCFAMILY Multi-Protocol Universal Synchronous Receiver/Transmitter USYNR/T Features o Selectable Protocol-Bit or Byte oriented o Direct TTL patibility o Three-state Input/Output BUS o Processor patible-8 or 16 bit o High Speed Operation-1.5 M Baud-typical o Fully Double Buffered-Data, Status, and Control Registers o Full or Half Duplex Operation-independent Transmitter and Receiver Clocks -individually selectable data length for Receiver and Transmitter o Master Reset-resets all Data, Status, and Control Registers o Maintenance Select-built-in self checking PIN CONFIGURATION ACP ASI RXACT ADA GND DB!!IB DB!!I9 OB111l MSEL TCP TSO TXENA TSA TBMT TXACT MR Vee DBIIll! DB¢1 OB02 OB~3 OB¢4 OB~5 OB06 DB¢7 OPENA BYTE OP Ail PACKAGE: 40-Pin D.I.P. BIT ORIENTED PROTOCOLS-SDLC, HDLC, ADCCP o Automatic bit stuffing and stripping o Automatic frame character detection and generation o Valid message protection-a valid received message is protected from overrun o Residue Handling-for messages which terminate with a partial data byte, the number of valid data bits is available SELECTABLE OPTIONS: o Variable Length Data-1 to 8 bit bytes o Error Checking-CRC (CRC16, CCITT-O, or CCITT-1) -None o Primary or Secondary Station Address Mode o All Parties Address-APA o Extendable Address Field-to any number of bytes o Extendable Control Field-to 2 bytes o Idle Mode-idle FLAG characters or MARK the line o Point to Point, Multi-drop, or Loop Configuration BYTE ORIENTED PROTOCOLS-Bi Sync, DDCMP o Automatic detection and generation of SYNC characters SELECTABLE OPTIONS: o Variable Length Data-1 to 8 bit bytes o Variable SYNC character-S, 6, 7, or 8 bits o Error Checking-CRC (CRC16, CCITT-O, or CCITT-1) -VRC (odd/even parity) -None o Strip Sync-deletion of leading SYNC characters after synchronization o Idle Mode-idle SYNC characters or MARK the line APPLICATIONS D Intelligent Terminals D Line Controllers D Network Processors D...