Description

The MT8952B HDLC Protocol Controller frames and formats data packets according to X.25 (Level 2) Recommendations from the CCITT.

Features

• Formats data as per X.25 (CCITT) level-2 standards

• Go-Ahead sequence generation and detection

• Single byte address recognition

• Microprocessor port and directly accessible registers for flexible operation and control

• 19 byte FIFO in both send and receive paths

• Handshake signals for multiplexing data links

• High speed serially clocked output (2.5 Mbps)

• ST-BUS compatibility with programmable channel selection for data and separate timeslot for control information

• Independent watchdog timer

• Facility to disable protocol functions

• Low power ISO-CMOS technology

Applications

• Data link controllers and protocol generators

• Digital sets, PBXs and private packet networks

• D-channel controller for ISDN basic access

• C-channel controller to Digital Network

Interface Circuits (typically MT8972)

• Interprocessor communication