Adaptive Isochronous USB Audio To RF Communication Device

A synchronized communication system comprising a wireless RF communication device and a USB interface, the system comprising a streaming controller configured to receive isochronous audio data frames provided by the USB interface and a wireless RF communication device clock, a serial audio link interconnecting at least the streaming controller and the wireless RF communication device,

• a phase locked loop configured to phase lock the isochronous audio data frames to a USB interface clock,
• a counter configured to count start-of-frame pulses of the phase locked isochronous audio frames,
• a comparator for comparing the counted start-of-frame pulses with the RF communication device clock to determine a clock difference signal, the clock difference signal triggering a synchronization event code when a threshold difference has been reached,
• a rate matching entity configured to rate match the isochronous audio data frames to the RF communication device clock upon receiving the synchronization event code to thereby synchronize the audio data frames with the wireless RF communication device clock.