參數(shù)資料
型號(hào)： AD1981BJST-REEL
廠商： Analog Devices Inc
文件頁數(shù)： 18/32頁
文件大?。?/td> 0K
描述： IC CODEC STEREO MICPREAMP 48LQFP
標(biāo)準(zhǔn)包裝： 1
系列： SoundMAX®
類型： 音頻編解碼器 '97
數(shù)據(jù)接口： 串行
分辨率（位）： 16，20 b
ADC / DAC 數(shù)量： 4 / 2
三角積分調(diào)變： 無
動(dòng)態(tài)范圍，標(biāo)準(zhǔn) ADC / DAC (db)： 85 / 90
電壓 - 電源，模擬： 4.5 V ~ 5.5 V
電壓 - 電源，數(shù)字： 3 V ~ 3.47 V
工作溫度： 0°C ~ 70°C
安裝類型： 表面貼裝
封裝/外殼： 48-LQFP
供應(yīng)商設(shè)備封裝： 48-LQFP（7x7）
包裝： 標(biāo)準(zhǔn)包裝
其它名稱： AD1981BJSTREELDKR
AD1981B
Rev. C | Page 25 of 32
Bit
Mnemonic
Function
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 the left-channel coefficient’s data block.
CHS = 1 selects the right-channel coefficient’s 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, because only the left-channel coefficients need to be addressed
and set up. The right-channel coefficients are fetched from the left-channel memory.
MAD
LBEN
Mixer ADC Loopback
Enable
Enables mixer ADC data to be summed into the 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.
OBSOLETE
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD1981BJSTZ 制造商:Analog Devices 功能描述:IC AUDIO CODEC
AD1981BJSTZ1 制造商:AD 制造商全稱:Analog Devices 功能描述:AC 97 SoundMAX Codec
AD1981BJSTZ2 制造商:AD 制造商全稱:Analog Devices 功能描述:AC ’97 SoundMAX Codec
AD1981BJSTZ-REEL 制造商:Analog Devices 功能描述:Audio Codec 4ADC / 2DAC 20-Bit 48-Pin LQFP T/R 制造商:Rochester Electronics LLC 功能描述:AC'97 SOUNDMAX CODEC W/STEREO MIC PREAMP - Tape and Reel 制造商:Analog Devices 功能描述:IC AUDIO CODEC
AD1981BJSTZ-REEL2 制造商:AD 制造商全稱:Analog Devices 功能描述:AC ’97 SoundMAX Codec
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