| 摘要 |
PROBLEM TO BE SOLVED: To simultaneously digital/analog-convert digital data of various sampling frequency by one circuit. SOLUTION: A USB interface 68 generates a reference signal corresponding to the reception of a SOF packet among received packets at the time of receiving voice digital data from a connected device, for example, a hard disk drive. A clock recovery circuit 113 generates a clock signal corresponding to a sampling frequency of 44.1 KHz and a clock signal corresponding to a sampling frequency of 48.0 KHz based on the reference signal supplied from the USB interface 68, and supplies the generated clock signal corresponding to the sampling frequency of 44.1 KHz and clock signal corresponding to the sampling frequency of 48.0 KHz to a digital audio interface. |
