TF_interface

TF_interface connects an FPGA to Tamagawa T-Format rotary encoders and related compliant devices in motion-control systems. It handles the request and response exchange over an RS-485 physical link, then converts returned serial fields into register-style outputs for downstream logic. This core exists to remove custom protocol handling from the main control design and to simplify integration of position feedback devices into FPGA-based architectures. It is a strong fit when the system needs deterministic encoder communication, hardware-based frame handling, and direct visibility of returned control, status, data, and error information. The architecture separates link handling, frame detection, data extraction, and cyclic redundancy check processing, which helps designers build encoder interfaces without creating a protocol engine from scratch. It also supports external cyclic redundancy check generation, giving designers freedom to adapt the protection scheme when required by the application. Built-in fault tracking and alarm signaling help the system detect persistent communication issues and respond before they affect control quality. TF_interface delivers the most value in industrial motor-control and servo systems that rely on Tamagawa feedback devices for position and status reporting.