Datasheet

TLV320ADC3001

www.ti.com

SLAS548C –OCTOBER 2008– REVISED APRIL 2011

Table 9. ADC FIR Filter Coefficients

Filter Coefficient ADC Coefficient Left Channel ADC Coefficient Right Channel

Fir0 C7 (page 4 / register 14 and page 4 / register 15) C39 (page 4 / register 78 and page 4 / register 79)

Fir1 C8 (page 4 / register 16 and page 4 / register 17) C40 (page 4 / register 80 and page 4 / register 81)

Fir2 C9 (page 4 / register 18 and page 4 / register 19) C41 (page 4 / register 82 and page 4 / register 83)

Fir3 C10 (page 4 / register 20 and page 4 / register 21) C42 (page 4 / register 84 and page 4 / register 85)

Fir4 C11 (page 4 / register 22 and page 4 / register 23) C43 (page 4 / register 86 and page 4 / register 87)

Fir5 C12 (page 4 / register 24 and page 4 / register 25) C44 (page 4 / register 88 and page 4 / register 89)

Fir6 C13 (page 4 / register 26 and page 4 / register 27) C45 (page 4 / register 90 and page 4 / register 91)

Fir7 C14 (page 4 / register 28 and page 4 / register 29) C46 (page 4 / register 92 and page 4 / register 93)

Fir8 C15 (page 4 / register 30 and page 4 / register 31) C47 (page 4 / register 94 and page 4 / register 95)

Fir9 C16 (page 4 / register 32 and page 4 / register 33) C48 (page 4 / register 96 and page 4 / register 97)

Fir10 C17 (page 4 / register 34 and page 4 / register 35) C49 (page 4 / register 98 and page 4 / register 99)

Fir11 C18 (page 4 / register 36 and page 4 / register 37) C50 (page 4 / register 100 and page 4 / register 101)

Fir12 C19 (page 4 / register 38 and page 4 / register 39) C51 (page 4 / register 102 and page 4 / register 103)

Fir13 C20 (page 4 / register 40 and page 4 / register 41) C52 (page 4 / register 104 and page 4 / register 105)

Fir14 C21 (page 4 / register 42 and page 4 / register 43) C53 (page 4 / register 106 and page 4 / register 107)

Fir15 C22 (page 4 / register 44 and page 4 / register 45) C54 (page 4 / register 108 and page 4 / register 109)

Fir16 C23 (page 4 / register 46 and page 4 / register 47) C55 (page 4 / register 110 and page 4 / register 111)

Fir17 C24 (page 4 / register 48 and page 4 / register 49) C56 (page 4 / register 112 and page 4 / register113)

Fir18 C25 (page 4 / register 50 and page 4 / register 51) C57 (page 4 / register 114 and page 4 / register 115)

Fir19 C26 (page 4 / register 52 and page 4 / register 53) C58 (page 4 / register 116 and page 4 / register 117)

Fir20 C27 (page 4 / register 54 and page 4 / register 55) C59 (page 4 / register 118 and page 4 / register 119)

Fir21 C28 (page 4 / register 56 and page 4 / register 57) C60 (page 4 / register 120 and page 4 / register 121)

Fir22 C29 (page 4 / register 58 and page 4 / register 59) C61 (page 4 / register 122 and page 4 / register 123)

Fir23 C30 (page 4 / register 60 and page 4 / register 61) C62 (page 4 / register 124 and page 4 / register 125)

Fir24 C31 (page 4 / register 62 and page 4 / register 63) C63 (page 4 / register 126 and page 4 / register 127)

Decimation Filter

The TLV320ADC3001 offers three different types of decimation filters. The integrated digital decimation filter

removes high-frequency content and downsamples the audio data from an initial sampling rate of AOSR × f

the final output sampling rate of f

. The decimation filtering is achieved using a higher-order CIC filter followed by

linear-phase FIR filters. The decimation filter cannot be chosen by itself, it is implicitly set through the chosen

processing block.

The following subsections describe the properties of the available filters A, B, and C.