FILTER.CTRL

Address offset: 0x524

Aditional PDM configurability


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				I	I	I	I	I	I	I	H	H	H	H	G	G		F	F	F	F	E	E	E	E	D	C	B	A
Reset 0x4EE0D200				0	1	0	0	1	1	1	0	1	1	1	0	0	0	0	0	1	1	0	1	0	0	1	0	0	0	0	0	0	0	0	0
ID	R/W	Field	Value ID	Value								Description
A	RW	OVERRIDERIGHTSOFTMUTE										Override soft mute enable for right channel Available only in Stereo mode
			Disable	0								No action
			Enable	1								override and disable soft mute
B	RW	OVERRIDELEFTSOFTMUTE										Override soft mute enable for left channel Available only in Stereo mode
			Disable	0								No action
			Enable	1								override and disable soft mute
C	RW	GAINADD0P25										Add +0.25dB to the gain stage Option to add 0.25dB to the gain stage
			Disable	0								Nothing added
			Enable	1								+0.25dB added
D	RW	MINORSTEP025CUSTOM										Compensates Gain with +0.25dB Applicable when custon decimation ratio us used (RATIO=Custom)
			Disable	0								Nothing added
			Enable	1								+0.25dB added
E	RW	MINORSTEP050CUSTOM		[0..12]								Compensates Gain with +0.5dB steps Applicable when custon decimation ratio us used (RATIO=Custom)
F	RW	SOFTCYCLES		[0..15]								Custom number of cycles for soft gain/mute function 32*(Multiplication+1) steps The steps represent one clock cycle at baseband signal frequency; applicable when FILTER.SOFTCYCLES=Custom
G	RW	DATASAMPLEDELAY										Input data sampling point delay in PDM_CLK cycels Can be used to configure sample delay independently on left and right channel
			NoDelay	0								No added delay
			DelayOnLeft	1								1 clock cycle delay on left channel
			DelayOnRight	2								1 clock cycle delay on right channel
			DelayOnBoth	3								1 clock cycle delay on both channels
H	RW	CICFILTERMSBCUSTOM										Defines MSB for CIC fliter when RATIO is set to "Custom" The value of MSB is 20 + value configured in this field
			Range0	0								OSR range low 4 OSR range high 32
			Range1	1								OSR range low 34 OSR range high 36
			Range2	2								OSR range low 38 OSR range high 42
			Range3	3								OSR range low 44 OSR range high 48
			Range4	4								OSR range low 50 OSR range high 54
			Range5	5								OSR range low 56 OSR range high 64
			Range6	6								OSR range low 66 OSR range high 72
			Range7	7								OSR range low 74 OSR range high 84
			Range8	8								OSR range low 86 OSR range high 96
			Range9	9								OSR range low 98 OSR range high 110
			Range10	10								OSR range low 112 OSR range high 128
			Range11	11								OSR range low 130 OSR range high 146
			Range12	12								OSR range low 148 OSR range high 168
			Range13	13								OSR range low 170 OSR range high 194
			Range14	14								OSR range low 196 OSR range high 222
			Range15	15								OSR range low 224 OSR range high 256
I	RW	DECRATIO		[2..127]								Configures decimation ratio to any even number between 6 and 256 Decimation rate is 2x(DECRATIO+1)