SYSTEM AND METHOD FOR MASTER-SLAVE DATA TRANSMISSION BASED ON A FLEXIBLE SERIAL BUS FOR USE IN HEARING DEVICES

摘要

A data transmission system for use in hearing devices includes a master unit with a first local bit clock and a slave unit with a second local bit clock. The master unit and the slave unit are connected to each other via a bus line, and are configured to communicate over the bus line according to a communication protocol based on a frame-wise serial transmission of bits. Each frame includes a clock reference, a master signalling interval, a slave signalling interval and a data payload. The slave unit further includes a clock recovery device for synchronising the second local bit clock with the first local bit clock based on the clock reference transmitted once per frame by the master unit. A corresponding method for data transmission is also provided. Moreover, hearing devices including such a data transmission system as well as uses of such a method for data transmission are proposed.

主权项

1. A data transmission system for use in hearing devices, the data transmission system comprising a master unit (1) with a first local bit clock (4) and a slave unit (2) with a second local bit clock (4′), the master unit (1) and the slave unit (2) being connected to each other via a bus line (3), and being configured to communicate over the bus line (3) according to a communication protocol based on a frame-wise serial transmission of bits, each frame (10) comprising a clock reference (11), a master signalling interval (12), a slave signalling interval (13) and a data payload (14, 15), wherein the slave unit (2) further comprises clock recovery means (5) for synchronising the second local bit clock (4′) with the first local bit clock (4) based on the clock reference (11) transmitted once per frame (10) by the master unit (1).