SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
The sources for BWS and AWS inputs are defined by internal muxing from multiple reference signals.
BWS and AWS are logic inputs, not clocks, to the ATL module. ATL performs an edge detection on these signals. To minimize jitter in HD Radio clocking implementation, ATLPCLK must be higher than 100 MHz. When ATL is used for HD Radio applications, the measuring circuit is connected to the word select signal from Audio IIS output (AWS) and Baseband IIS input (BWS). The ATL_BWSMUX0 and ATL_AWSMUX0 registers select which inputs are used as the ATL BWS and AWS inputs.