Datasheet
M
n
n
n 0
H(z) FIR z
M 24 for PRB _R3, PRB _ R6, PRB _ R15, and PRB _ R18
M 19 for PRB _ R9 and PRB _ R12
-
=
=
=
=
å
(4)
TLV320ADC3101
SLAS553A – NOVEMBER 2008 – REVISED SEPTEMBER 2009 ......................................................................................................................................
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Table 8. ADC Biquad Filter Coefficients (continued)
Filter FIlter Coefficient ADC Coefficient, Left Channel ADC Coefficient, Right Channel
BIQUAD C N0 C17 (page 4 / register 34, 35) C49 (page 4 / register 98, 99)
N1 C18 (page 4 / register 36, 37) C50 (page 4 / register 100, 101)
N2 C19 (page 4 / register 38, 39) C51 (page 4 / register 102, 103)
D1 C20 (page 4 / register 40, 41) C52 (page 4 / register 104, 105)
D2 C21 (page 4 / register 42, 43) C53 (page 4 / register 106, 107)
BIQUAD D N0 C22 (page 4 / register 44, 45) C54 (page 4 / register 108, 109)
N1 C23 (page 4 / register 46, 47) C55 (page 4 / register 110, 111)
N2 C24 (page 4 / register 48, 49) C56 (page 4 / register 112,113)
D1 C25 (page 4 / register 50, 51) C57 (page 4 / register 114, 115)
D2 C26 (page 4 / register 52, 53) C58 (page 4 / register 116, 117)
BIQUAD E N0 C27 (page 4 / register 54, 55) C59 (page 4 / register 118, 119)
N1 C28 (page 4 / register 56, 57) C60 (page 4 / register 120, 121)
N2 C29 (page 4 / register 58, 59) C61 (page 4 / register 122,123)
D1 C30 (page 4 / register 60, 61) C62 (page 4 / register 124, 125)
D2 C31 (page 4 / register 62, 63) C63 (page 4 / register 126, 127)
FIR Section
Six of the available ADC processing blocks offer FIR filters for signal processing. PRB_R9 and PRB_R12 feature
a 20-tap FIR filter, whereas the processing blocks PRB_R3, PRB_R6, PRB_R15, and PRB_R18 feature a 25-tap
FIR filter.
The coefficients of the FIR filters are 16-bit 2s-complement format and correspond to the ADC coefficient space
as listed in Table 9 . There is no default transfer function for the FIR filter. When the FIR filter is used, all
applicable coefficients must be programmed.
Table 9. ADC FIR Filter Coefficients
Filter Coefficient ADC Coefficient, Left Channel ADC Coefficient, Right Channel
FIR0 C7 (page 4 / register 14, page 4 / register 15) C39 (page 4 / register 78, page 4 / register 79)
FIR1 C8 (page 4 / register 16, page 4 / register 17) C40 (page 4 / register 80, page 4 / register 81)
FIR2 C9 (page 4 / register 18, page 4 / register 19) C41 (page 4 / register 82, page 4 / register 83)
FIR3 C10 (page 4 / register 20, page 4 / register 21) C42 (page 4 / register 84, page 4 / register 85)
FIR4 C11 (page 4 / register 22, page 4 / register 23) C43 (page 4 / register 86, page 4 / register 87)
FIR5 C12 (page 4 / register 24, page 4 / register 25) C44 (page 4 / register 88, page 4 / register 89)
FIR6 C13 (page 4 / register 26, page 4 / register 27) C45 (page 4 / register 90, page 4 / register 91)
FIR7 C14 (page 4 / register 28, page 4 / register 29) C46 (page 4 / register 92, page 4 / register 93)
FIR8 C15 (page 4 / register 30, page 4 / register 31) C47 (page 4 / register 94, page 4 / register 95)
FIR9 C16 (page 4 / register 32, page 4 / register 33) C48 (page 4 / register 96, page 4 / register 97)
FIR10 C17 (page 4 / register 34, page 4 / register 35) C49 (page 4 / register 98, page 4 / register 99)
FIR11 C18 (page 4 / register 36, page 4 / register 37) C50 (page 4 / register 100, page 4 / register 101)
FIR12 C19 (page 4 / register 38, page 4 / register 39) C51 (page 4 / register 102, page 4 / register 103)
FIR13 C20 (page 4 / register 40, page 4 / register 41) C52 (page 4 / register 104, page 4 / register 105)
FIR14 C21 (page 4 / register 42, page 4 / register 43) C53 (page 4 / register 106, page 4 / register 107)
FIR15 C22 (page 4 / register 44, page 4 / register 45) C54 (page 4 / register 108, page 4 / register 109)
FIR16 C23 (page 4 / register 46, page 4 / register 47) C55 (page 4 / register 110, page 4 / register 111)
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