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CD2481
Programmable Four-Channel Communications Controller
Datasheet
The CD2481 is a four-channel synchronous/asynchronous communications controller specifically designed to reduce host-system processing overhead and increase efficiency in a wide variety of communications applications. A special member of the CD24X1 family, the device allows easy field upgrades and enhancement with an on-chip 8K-word microcode store for downloaded control code. The CD2481 is packaged in a 100-pin MQFP package that offers 10 data/clock/modem pins per channel. The device has four fully independent serial channels to support standard asynchronous, PPP, MNP4, SLIP, bit-synchronous (HDLC), and bytesynchronous (bisync, X.21) protocols.