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