參數(shù)資料
型號： TLV320AIC3110IRHBR
廠商： TEXAS INSTRUMENTS INC
元件分類： 音頻／視頻放大
英文描述： AUDIO AMPLIFIER, PQCC32
封裝： 5 X 5 MM, GREEN, PLASTIC, QFN-32
文件頁數(shù)： 55/126頁
文件大?。?/td> 1528K
代理商： TLV320AIC3110IRHBR
M
n
n 0
H(z)
FIR z
M
24 for PRB _ R6, PRB _ R18
M
19 for PRB _ R12
-
=
SLAS647 – DECEMBER 2009
www.ti.com
5.4.4.3.3 FIR Section
Three of the available ADC processing blocks offer FIR filters for signal processing. Processing block
PRB_R12 features a 20-tap FIR filter, whereas the processing blocks PRB_R6 and PRB_R18 feature a
25-tap FIR filter.
(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 5-19. 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 5-19. 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
34
APPLICATION INFORMATION
Copyright 2009, Texas Instruments Incorporated
Product Folder Link(s): TLV320AIC3110
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