參數資料
型號： AD1981BJST-REEL
廠商： Analog Devices Inc
文件頁數： 9/32頁
文件大?。?/td> 0K
描述： IC CODEC STEREO MICPREAMP 48LQFP
標準包裝： 1
系列： SoundMAX®
類型： 音頻編解碼器 '97
數據接口： 串行
分辨率（位）： 16，20 b
ADC / DAC 數量： 4 / 2
三角積分調變： 無
動態(tài)范圍，標準 ADC / DAC (db)： 85 / 90
電壓 - 電源，模擬： 4.5 V ~ 5.5 V
電壓 - 電源，數字： 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
供應商設備封裝： 48-LQFP（7x7）
包裝： 標準包裝
其它名稱： AD1981BJSTREELDKR
AD1981B
Rev. C | Page 17 of 32
CD VOLUME REGISTER
Index 0x12
Reg No.
Name
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Default
0x12
CD Volume
CVM
X
LCV4
LCV3
LCV2
LCV1
LCV0
X
RCV4
RCV3
RCV2
RCV1
RCV0
0x8808
1 For AC ‘97 compatibility, Bit D7 (RM) is available only by setting the MSPLT bit, Register 0x76. The MSPLT bit enables separate mute bits for the left and right channels.
If MSPLT is not set, the RM bit has no effect. All registers are not shown, and bits containing an X are assumed to be reserved. Refer to Table 22 for examples.
Table 19.
Bit
Mnemonic
Function
RCV [4:0]
Right CD Volume
Allows setting the CD right-channel attenuator in 32 volume levels. The LSB represents 1.5 dB, and the
gain range is +12 dB to 34.5 dB. The default value is 0 dB, mute enabled.
RM
Right-Channel Mute
Once enabled by the MSPLT bit in Register 0x76, this bit mutes the right channel separately from the
CVM bit. Otherwise, this bit always reads 0 and has no affect when set to 1.
LCV [4:0]
Left CD Volume
Allows setting the CD left-channel attenuator in 32 volume levels. The LSB represents 1.5 dB, and the
gain range is +12 dB to 34.5 dB. The default value is 0 dB, mute enabled.
CVM
CD Volume Mute
When this bit is set to 1, both the left and right channels are muted, unless the MSPLT bit in
Register 0x76 is set to 1, in which case this mute bit affects only the left channel.
AUX VOLUME REGISTER
Index 0x16
Reg No.
Name
D15
D14
D13
D12
D11
D1
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Default
0x16
AUX Volume
AM
X
LAV4
LAV3
LAV2
LAV1
LAV0
X
RAV4
RAV3
RAV2
RAV1
RAV0
0x8808
1 For AC ’97 compatibility, Bit D7 (RM) is available only by setting the MSPLT bit, Register 0x76. The MSPLT bit enables separate mute bits for the left and right channels.
If MSPLT is not set, the RM bit has no effect. All registers are not shown, and bits containing an X are assumed to be reserved. Refer to
for examples.
Table 22
Table 20.
Bit
Mnemonic
Function
RAV [4:0]
Right AUX Volume
Allows setting the AUX right-channel attenuator in 32 volume levels. The LSB represents 1.5 dB, and
the gain range is +12 dB to 34.5 dB. The default value is 0 dB, mute enabled.
RM
Right-Channel Mute
Once enabled by the MSPLT bit in Register 0x76, this bit mutes the right channel separately from the
AM bit. Otherwise, this bit always reads 0 and has no affect when set to 1.
LAV [4:0]
Left AUX Volume
Allows setting the AUX left-channel attenuator in 32 volume levels. The LSB represents 1.5 dB, and
the gain range is +12 dB to 34.5 dB. The default value is 0 dB, mute enabled.
AM
AUX Volume Mute
When this bit is set to 1, both the left and right channels are muted, unless the MSPLT bit in
Register 0x76 is set to 1, in which case this mute bit affects only the left channel.
OBSOLETE
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相關代理商/技術參數
參數描述
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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