The WD2501 is a MOS I LSI device which handles bit-oriented, full-duplex serial data communications with DMA, which conforms to CCITT X.25 with programmable enhancements.
The device is fabricated in N-Channel silicon gate MOS technology and is TTL compatible on all inputs and outputs.
Full PDF Text Transcription for WD2501 (Reference)
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WD2501. For precise diagrams, and layout, please refer to the original PDF.
WESTERN DIGITAl.. c oR p o R A TI oN LSI PACKET NETWORK INTERFACE WD2501/11 SHORT FORM DATA SHEET FEATURES • Packet Switching Controller Compatible with CCITI Recommendat...
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ATURES • Packet Switching Controller Compatible with CCITI Recommendation X.2S, Level 2, LAP. • Programmable Primary Timer (T1) And Retransmission Counter (N2) • Programmable A-Field Which Provides A Wider Range Of Applications Than Defined By X.25. These Include: DTE-To-DTE Connection, Multipoint, And Loop-Back Testing • Direct Memory Access (DMA) Transfer: Two Channels; One For Transmit And One For Receive. Send I Receive Data Accessed By Indirect Addressing Method. No External Address Latches Required. Sixteen Output Address Lines. • Zero Bit Insert And Delete • Automatic Appending and Testing Of FCS Field • Computer Bu
WD2501 Datasheet
