WD2511, WD2501 Datasheet - Western Digital

WD2511, WD2501, LSI PACKET NETWORK INTERFACE

WESTERN DIGITAl..c oR p o R A TI oN LSI PACKET NETWORK INTERFACE WD2501/11 SHORT FORM DATA SHEET .
The WD2501 is a MOS I LSI device which handles bit-oriented, full-duplex serial data communications with DMA, which conforms to CCITT X.

Features

* Packet Switching Controller Compatible with CCITI Recommendation X.2S, Level 2, LAP.
* Programmable Primary Timer (T1) And Retransmission Counter (N2)

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 O

WD2501-WesternDigital.pdf