參數(shù)資料
型號： AK4671EG
廠商： Asahi Kasei Microsystems Co.,Ltd
元件分類： Codec
英文描述： Stereo CODEC with MIC/RCV/HP-AMP
中文描述： 立體聲編解碼器麥克風/垃圾車/惠普腺苷
文件頁數(shù)： 93/164頁
文件大小： 1792K
代理商： AK4671EG
[AK4671]
MS0666-E-00
2007/10
- 93 -
■
Stereo Line Output 3 (LOUT3/ROUT3 pins)
When DACSL and DACSR bits are “1”, Lch/Rch signal of DAC is output from the LOUT3/ROUT3 pins which is
single-ended. When DACSL and DACSR bits are “0”, output signal is muted and LOUT3/ROUT3 pins output VCOM
voltage. The load impedance is 10k
Ω
(min.). When the PMLO3=PMRO3=LOPS3 bits = “0”, LOUT3/ROUT3 enters
power-down mode and the output is pulled-down to VSS1 by 100k
Ω
(typ). When the LOPS3 bit is “1”, LOUT3/ROUT3
enters power-save mode. Pop noise at power-up/down can be reduced by changing PMLO3 and PMRO3 bits at LOPS3
bit = “1”. In this case, output signal line should be pulled-down to VSS1 by 20k
Ω
after AC coupled as
Figure 75
. Rise/Fall
time is 300ms(max) at C=1
μ
F and AVDD=3.3V. When PMLO3=PMRO3 bits = “1” and LOPS3 bit = “0”,
LOUT3/ROUT3 is in normal operation.
L3VL3-0 bits control the volume of LOUT3/ROUT3.
When LOM3 bit = “1”, DAC output signal is output to LOUT3 and ROUT3 pins as (L+R) mono signal.
When LOOPM3 bit = “1”, the MIC-Amp signal is output to LOUT3 and ROUT3 pins as (L+R) mono signal.
LOPS3
PMLO3
Mode
0
Power-down
0
1
Normal Operation
0
Power-save
1
1
Power-save
Table 71. Stereo Line Output Mode Select (LOUT3)
LOPS3
PMRO3
Mode
0
Power-down
0
1
Normal Operation
0
Power-save
1
1
Power-save
Table 72. Stereo Line Output Mode Select (ROUT3)
L3VL1
L3VL0
1
1
1
0
0
1
0
0
Table 73. Stereo Line Output Volume Setting
LOUT3 pin
Pull-down to VSS1
Normal Operation
Fall down to VSS1
Rise up to VCOM
(default)
ROUT3 pin
Pull-down to VSS1
Normal Operation
Fall down to VSS1
Rise up to VCOM
(default)
Attenuation
+3dB
0dB
3dB
6dB
(default)
LOUT3
ROUT3
1
μ
F
220
Ω
20k
Ω
Figure 75. External Circuit for Stereo Line Output (in case of using Pop Noise Reduction Circuit)
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
AK4673 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/HP-AMP and Touch Screen Controller
AK4673EG 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/HP-AMP and Touch Screen Controller
AK4675 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/RCV/HP/SPK-AMP
AK4675EG 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/RCV/HP/SPK-AMP
AK4682 制造商:AKM 制造商全稱:AKM 功能描述:Multi-channel CODEC with 2Vrms Stereo Selector
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