| 摘要 |
A method of operation of a half-duplex wired digital audio communications link 124 between a master device 120 and a slave device 122, the method comprising, in at least a calibration mode: the master device detecting a relative delay between transitions in data transmitted by the master device and transitions in data from the slave device as received by the master device; the master device transmitting control data based on the relative delay to the slave device; the slave device transmitting data with a delay, relative to the transitions in data as received from the master device, the delay being based on the transmitted control data. The step of the slave device transmitting data with a delay comprises: the slave device updating a delay value stored in the slave device in response to the transmitted control data; and the slave device transmitting data with a delay according to the stored delay value (stored in REG 184) relative to the transitions in data as received from the master device. The master device transmits a first synchronisation data pattern to the slave device on the wired link, with signal level transitions being synchronised to a master transmission clock. |
