參數(shù)資料
型號(hào)： AD1981BLJSTZ-REEL2
廠商： Analog Devices, Inc.
元件分類： Codec
英文描述： AC ’97 SoundMAX㈢ Codec
中文描述： ㈢交流\u0026#39;97 SoundMAX編解碼器
文件頁數(shù)： 22/28頁
文件大小： 215K
代理商： AD1981BLJSTZ-REEL2
REV. 0
AD1981BL
–22–
BCA[5,0]
Biquad and Coefficient Address Pointer
biquad 0 coef a0 BCA[5,0] = 011011
biquad 0 coef a1 BCA[5,0] = 011010
biquad 0 coef a2 BCA[5,0] = 011001
biquad 0 coef b1 BCA[5,0] = 011101
biquad 0 coef b2 BCA[5,0] = 011100
biquad 1 coef a0 BCA[5,0] = 100000
biquad 1 coef a1 BCA[5,0] = 011111
biquad 1 coef a2 BCA[5,0] = 011110
biquad 1 coef b1 BCA[5,0] = 100010
biquad 1 coef b2 BCA[5,0] = 100001
biquad 2 coef a0 BCA[5,0] = 100101
biquad 2 coef a1 BCA[5,0] = 100100
biquad 2 coef a2 BCA[5,0] = 100011
biquad 2 coef b1 BCA[5,0] = 100111
biquad 2 coef b2 BCA[5,0] = 100110
biquad 3 coef a0 BCA[5,0] = 101010
biquad 3 coef a1 BCA[5,0] = 101001
biquad 3 coef a2 BCA[5,0] = 101000
biquad 3 coef b1 BCA[5,0] = 101100
biquad 3 coef b2 BCA[5,0] = 101011
biquad 4 coef a0 BCA[5,0] = 101111
biquad 4 coef a1 BCA[5,0] = 101110
biquad 4 coef a2 BCA[5,0] = 101101
biquad 4 coef b1 BCA[5,0] = 110001
biquad 4 coef b2 BCA[5,0] = 110000
biquad 5 coef a0 BCA[5,0] = 110100
biquad 5 coef a1 BCA[5,0] = 110011
biquad 5 coef a2 BCA[5,0] = 110010
biquad 5 coef b1 BCA[5,0] = 110110
biquad 5 coef b2 BCA[5,0] = 110101
biquad 6 coef a0 BCA[5,0] = 111001
biquad 6 coef a1 BCA[5,0] = 111000
biquad 6 coef a2 BCA[5,0] = 110111
biquad 6 coef b1 BCA[5,0] = 111011
biquad 6 coef b2 BCA[5,0] = 111010
CHS
Channel Select.
CHS = 0 selects left channel coefficients data block.
CHS = 1 selects right channel coefficients data block.
SYM
Symmetry. When set to 1, this bit indicates that the left and right channel coefficients are equal. This shortens
the coefficients’ setup sequence since only the left channel coefficients need to be addressed and set up (the right chan-
nel coefficients are fetched from the left channel memory).
MAD
LBEN
Mixer ADC Loopback Enable. Enables mixer ADC data to be summed into PCM stream.
0 = No loopback allowed (default).
1 = Enable loopback.
EQM
Equalizer Mute. When set to 1, this bit disables the equalizer function (allows all data to pass through). The
reset default sets this bit to 1, disabling the equalizer function until the biquad coefficients can be properly set.
EQ Control Register (Index 60h)
Reg
No.
Name
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Default
60h
EQ CTRL
EQM
MAD
LBEN
X
X
X
X
X
X
SYM
CHS
BCA5
BCA4
BCA3
BCA2 BCA1
BCA0 8080h
Register 60h is a read/write register that controls the equalizer functionality and data setup. This register also contains the Biquad and Coefficient Address pointer,
which is used in conjunction with the EQ Data Register (78h) to set up the equalizer coefficients. The reset default disables the equalizer function until the coefficients
can be properly set up by the software and sets the Symmetry bit to allow equal coefficients for left and right channels. All registers not shown and bits containing an X
are assumed to be reserved.
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD1981BWBSTZ 制造商:Analog Devices 功能描述:
AD1981BWBSTZ-REEL 制造商:Analog Devices 功能描述:ANAAD1981BWBSTZ-REEL AC'97 SOUNDMAX CODE
AD1981HD 制造商:AD 制造商全稱:Analog Devices 功能描述:HD Audio SoundMAX Codec
AD1981HDJSTZ 制造商:Analog Devices 功能描述:Audio Codec 2ADC / 2DAC 20-Bit/24-Bit 48-Pin LQFP
AD1981HDJSTZ-REEL 制造商:Analog Devices 功能描述:Audio Codec 2ADC / 2DAC 20-Bit/24-Bit 48-Pin LQFP T/R
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