JAJSF44D March 2014 – March 2018 PCM1860 , PCM1861 , PCM1862 , PCM1863 , PCM1864 , PCM1865
PRODUCTION DATA.
The SPI interface is a 4-wire synchronous serial port that operates asynchronously to the serial audio interface and the system clock (SCK). The serial control interface is used to program and read the on-chip mode registers.
The control interface includes MISO, MOSI, MC, and MS. MISO (master in slave out) is the serial data output, used to read back the values of the mode registers; MOSI (master out slave in) is the serial data input, used to program the mode registers.
MC is the serial bit clock, used to shift data in and out of the control port on the MC falling edge. MS is the active-low mode control enable, used to enable the internal mode register access. If data from the device is not required, the MISO pin can be assigned to GPIO1 by register control.