SLAS831D March 2014 – March 2018 PCM1860 , PCM1861 , PCM1862 , PCM1863 , PCM1864 , PCM1865
PRODUCTION DATA.
There are two threshold levels used for Energysense, as shown in Figure 40. One is the loss of signal level, another one is the resume of signal level.
As both thresholds are DSP based, their coefficients are stored in virtual coefficient space that is programmed through the device register map.
For example, to change the resume threshold value to –30 dB (0x040C37):
Write 0x00 0x01 ; # change to register page 1
Write 0x02 0x2D ; # write the memory address of resume threshold
Write 0x04 0x04 ; # bit[23:15]
Write 0x05 0x0C ; # bit[15:8]
Write 0x06 0x37 ; # bit[7:0]
Write 0x01 0x01 ; # execute write operation