Datasheet
M
n
n
n 0
H(z) FIR z
M 24 for PRB _ R6, PRB _ R18
M 19 for PRB _ R12
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TLV320AIC3110
www.ti.com
SLAS647B –DECEMBER 2009–REVISED MAY 2012
(3)
The coefficients of the FIR filters are 16-bit 2s-complement format (2 bytes each) and correspond to the
ADC coefficient space as listed in Table 5-20. Note that the default (reset) coefficients are not vaild for the
FIR filter. When the FIR filter is used, all applicable coefficients must be reprogrammed by the user. To
reprogram the FIR filter coefficients as an all-pass filter, write value 0x00 to page 4 / register 24, page 4 /
register 25, page 4 / register 34, page 4 / register 35, page 4 / register 44, page 4 / register 45, page 4 /
register 54, and page 4 / register 55.
Table 5-20. ADC FIR Filter Coefficients
Filter FIlter Coefficient RAM Default (Reset) Values – Not Valid for the FIR Filter – Must
Coefficient Location Be Reprogrammed by User
Fir0 Page 4 / register 14 0x7FFF (decimal 1.0 – LSB value)
and page 4 / register 15
Fir1 Page 4 / register 16 0x0000
and page 4 / register 17
Fir2 Page 4 / register 18 0x0000
and page 4 / register 19
Fir3 Page 4 / register 20 0x0000
and page 4 / register 21
Fir4 Page 4 / register 22 0x0000
and page 4 / register 23
Fir5 Page 4 / register 24 0x7FFF (decimal 1.0 – LSB value)
and page 4 / register 25
Fir6 Page 4 / register 26 0x0000
and page 4 / register 27
Fir7 Page 4 / register 28 0x0000
and page 4 / register 29
Fir8 Page 4 / register 30 0x0000
and page 4 / register 31
Fir9 Page 4 / register 32 0x0000
and page 4 / register 33
Fir10 Page 4 / register 34 0x7FFF (decimal 1.0 – LSB value)
and page 4 / register 35
Fir11 Page 4 / register 36 0x0000
and page 4 / register 37
Fir12 Page 4 / register 38 0x0000
and page 4 / register 39
Fir13 Page 4 / register 40 0x0000
and page 4 / register 41
Fir14 Page 4 / register 42 0x0000
and page 4 / register 43
Fir15 Page 4 / register 44 0x7FFF (decimal 1.0 – LSB value)
and page 4 / register 45
Fir16 Page 4 / register 46 0x0000
and page 4 / register 47
Fir17 Page 4 / register 48 0x0000
and page 4 / register 49
Fir18 Page 4 / register 50 0x0000
and page 4 / register 51
Fir19 Page 4 / register 52 0x0000
and page 4 / register 53
Copyright © 2009–2012, Texas Instruments Incorporated APPLICATION INFORMATION 35
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