The MC68B54S is an Advanced Data Link Controller (ADLC) manufactured by Freescale Semiconductor (formerly Motorola). It is designed to provide synchronous serial data communication capabilities for microprocessor-based systems. It supports various data link protocols, making it suitable for networking and communication applications.

Applications

• X.25 packet switching networks.
• Synchronous Data Link Control (SDLC) communications.
• High-Level Data Link Control (HDLC) communications.
• Network interfaces in industrial automation systems.
• Mainframe computer communication links.

Features

• Supports SDLC and HDLC protocols. Enables communication with a wide range of networking devices.
• Full-duplex synchronous operation. Allows simultaneous transmission and reception of data.
• Programmable frame formats. Supports various frame lengths and control field options.
• Cyclic Redundancy Check (CRC) generation and checking. Provides error detection and correction capabilities.
• Interrupt capability. Allows the microprocessor to respond quickly to incoming data or status changes.
• Direct Memory Access (DMA) support. Facilitates high-speed data transfer between the ADLC and system memory.

Benefits

• Simplified synchronous serial communication interface design. The MC68B54S handles many of the complexities of synchronous serial communication, reducing the burden on the microprocessor.
• High data throughput. DMA support allows for efficient data transfer at high baud rates.
• Flexible configuration. The programmable frame formats allow the MC68B54S to be adapted to a wide range of synchronous serial communication protocols.
• Improved data integrity. CRC generation and checking ensure reliable data transmission.
• Reduced system cost. Integrated features reduce the need for external components.

Additional Details

The MC68B54S operates from a single +5V power supply. It is available in a 40-pin DIP package. The device is compatible with TTL logic levels. The device offers various loopback modes for self-testing and diagnostics. It also offers different clocking options to suit a variety of application needs.