RATIO

Address offset: 0x520

Selects the decimation ratio between PDM_CLK and output sample rate. When RATIO is selected to be "custom", the decimation rate should be set using the FILTER.CTRL field before setting the RATIO to 7

Change PRESCALER.DIVISOR accordingly.


Bit number				31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
ID																																	A	A	A
Reset 0x00000002				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0
ID	R/W	Field	Value ID	Value								Description
A	RW	RATIO										Selects the decimation ratio between PDM_CLK and output sample rate
			Ratio48	0								Ratio of 48
			Ratio50	1								Ratio of 50
			Ratio64	2								Ratio of 64
			Ratio80	3								Ratio of 80
			Ratio96	4								Ratio of 96
			Ratio150	5								Ratio of 150
			Ratio192	6								Ratio of 192
			Custom	7								Custom. The decimation rate can be changed using the FILTER.CTRL[31:25] bits