參數(shù)資料
型號： TLV320AIC36IZQE
廠商： TEXAS INSTRUMENTS INC
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PBGA80
封裝： 5 X 5 MM, GREEN, PLASTIC, VFBGA-80
文件頁數(shù)： 94/165頁
文件大小： 1895K
代理商： TLV320AIC36IZQE
PRB_R12
and
PRB_R9
for
,
19
M
PRB_R18
and
PRB_R15
PRB_R6,
PRB_R3,
for
,
24
M
z
Fir
)
z
(
H
M
0
n
=
=
-
SBAS387A – MAY 2009 – REVISED JUNE 2010
www.ti.com
5.8.3.3
FIR Section
Six of the available ADC processing blocks offer FIR filters for signal processing. Processing blocks
PRB_R9 and PRB_R12 feature a 20-tap FIR filter, while PRB_R3, PRB_R6, PRB_R15, and PRB_R18
feature a 25-tap FIR filter.
(4)
The coefficients of the FIR filters are 16-bit twos complement format and correspond to the ADC
coefficient space as listed below. There is no default transfer function for the FIR filter. When the FIR filter
is used all applicable coefficients must be programmed.
Table 5-7. ADC FIR Filter Coefficients
Filter
ADC Coefficient Left Channel
ADC Coefficient Right Channel
Fir0
C7 (Pg 4, Reg 14 and 15)
C39 (Pg 4, Reg 78 and 79)
Fir1
C8 (Pg 4, Reg 16 and 17)
C40 (Pg 4, Reg 80 and 81)
Fir2
C9 (Pg 4, Reg 18 and 19)
C41 (Pg 4, Reg 82 and 83)
Fir3
C10 (Pg 4, Reg 20 and 21)
C42 (Pg 4, Reg 84 and 85)
Fir4
C11 (Pg 4, Reg 22 and 23)
C43 (Pg 4, Reg 86 and 87)
Fir5
C12 (Pg 4, Reg 24 and 25)
C44 (Pg 4, Reg 88 and 89)
Fir6
C13 (Pg 4, Reg 26 and 27)
C45 (Pg 4, Reg 90 and 91)
Fir7
C14 (Pg 4, Reg 28 and 29)
C46 (Pg 4, Reg 92 and 93)
Fir8
C15 (Pg 4, Reg 30 and 31)
C47 (Pg 4, Reg 94 and 95)
Fir9
C16 (Pg 4, Reg 32 and 33)
C48 (Pg 4, Reg 96 and 97)
Fir10
C17 (Pg 4, Reg 34 and 35)
C49 (Pg 4, Reg 98 and 99)
Fir11
C18 (Pg 4, Reg 36 and 37)
C50 (Pg 4, Reg 100 and 101)
Fir12
C19 (Pg 4, Reg 38 and 39)
C51 (Pg 4, Reg 102 and 103)
Fir13
C20 (Pg 4, Reg 40 and 41)
C52 (Pg 4, Reg 104 and 105)
Fir14
C21 (Pg 4, Reg 42 and 43)
C53 (Pg 4, Reg 106 and 107)
Fir15
C22 (Pg 4, Reg 44 and 45)
C54 (Pg 4, Reg 108 and 109)
Fir16
C23 (Pg 4, Reg 46 and 47)
C55 (Pg 4, Reg 110 and 111)
Fir17
C24 (Pg 4, Reg 48 and 49)
C56 (Pg 4, Reg 112 and 113)
Fir18
C25 (Pg 4, Reg 50 and 51)
C57 (Pg 4, Reg 114 and 115)
Fir19
C26 (Pg 4, Reg 52 and 53)
C58 (Pg 4, Reg 116 and 117)
Fir20
C27 (Pg 4, Reg 54 and 55)
C59 (Pg 4, Reg 118 and 119)
Fir21
C28 (Pg 4, Reg 56 and 57)
C60 (Pg 4, Reg 120 and 121)
Fir22
C29 (Pg 4, Reg 58 and 59)
C61 (Pg 4, Reg 122 and 123)
Fir23
C30 (Pg 4, Reg 60 and 61)
C62 (Pg 4, Reg 124 and 125)
Fir24
C31 (Pg 4, Reg 62 and 63)
C63 (Pg 4, Reg 126 and 127)
5.8.4
Decimation Filter
The TLV320AIC36 offers three different types of decimation filters. The integrated digital decimation filter
removes high-frequency content and down samples the audio data from an initial sampling rate of
AOSR*Fs to the final output sampling rate of Fs. 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.
34
APPLICATION INFORMATION
Copyright 2009–2010, Texas Instruments Incorporated
Product Folder Link(s): TLV320AIC36
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