Instantiated in MAIN domain one Audio Tracking Logic (ATL) module, which is used by
HD Radio™ applications to synchronize the digital audio output to the baseband clock, supports the following main features:
- One ATL module, containing four ATL instances, for HD Radio support and asynchronous sample rate conversion assistance
- Each instance tracks the time error between two syncs (local Audio Word Select [AWS] and Baseband Word Select [BWS])
- Each instance selects between 28 mux choices for BWS and 30 mux choices for AWS
- Each instance generates modulated ATCLK clock signals with software-initiated pulse stealing
- Selection between interface or functional clock to run error counting timers and to derive modulated clock outputs
- Clock and reset management: receives clock and reset signals from the device PSC module
- Hardware reset
- Local software reset