SLAS831D March 2014 – March 2018 PCM1860 , PCM1861 , PCM1862 , PCM1863 , PCM1864 , PCM1865
PRODUCTION DATA.
Two PCM186x software-controlled devices can be used together to create an 8-channel (or higher) channel count system using a TDM. In Figure 59, Device A is used as the TDM clock master, and Device B is configured to be a TDM slave and transmit on channels 5, 6, 7, and 8 of the TDM stream. The key difference is that Device A most likely has a crystal, or an SCKI source, and is configured to be the TDM master, whereas Device B does not require an XTAL or SCKI source because Device B uses the internal PLL to generate the required system clocks. Another two channels can be added to the stream from a stereo device; however, I2C address management is required because the PCM186x software-controlled devices can only have one of two I2C addresses.