Mitel MT8952B HDLC Protocol Controller - ISO-CMOS ST-BUS Family - Data Link Controller & Protocol Generator - B23002

Used, removed from decommissioned equipment.

• Product: MT8952B HDLC Protocol Controller
• 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
• Ordering Information:
  • MT8952BE: 28 Pin Plastic DIP
  • MT8952BP: 28 Pin PLCC
  • MT8952BS: 28 Pin SOIC
• Operating Temperature: -40°C to 85°C

The MT8952B HDLC Protocol Controller handles bit-oriented protocol structure and formats the data as per the packet switching protocol defined in the X.25 (Level 2) recommendations of the CCITT. It transmits and receives the packeted data (information or control) serially in a specific format, while providing data transparency by zero insertion and deletion. It generates and detects the flags, various link channel states, and the abort sequence. There is also a provision to disable the protocol functions and provide transparent access to the serial bus through the parallel port.

• Product: MT8952B HDLC Protocol Controller
• 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
• Ordering Information:
  • MT8952BE: 28 Pin Plastic DIP 
• Operating Temperature: -40°C to 85°C

The MT8952B HDLC Protocol Controller handles bit-oriented protocol structure and formats the data as per the packet switching protocol defined in the X.25 (Level 2) recommendations of the CCITT. It transmits and receives the packeted data (information or control) serially in a specific format, while providing data transparency by zero insertion and deletion. It generates and detects the flags, various link channel states, and the abort sequence. There is also a provision to disable the protocol functions and provide transparent access to the serial bus through the parallel port.