參數(shù)資料
型號： AK4648EC
廠商： Asahi Kasei Microsystems Co.,Ltd
元件分類： Codec
英文描述： Stereo CODEC with MIC/HP/SPK-AMP
中文描述： 立體聲編解碼器麥克風(fēng)/惠普/胰腎聯(lián)合移植腺苷
文件頁數(shù)： 64/119頁
文件大?。?/td> 1272K
代理商： AK4648EC
[AK4648]
MS0625-E-01
2007/06
- 64 -
MIN
SPLP/SPLN or SPRP/SPRN
ALC bit = “0”
+4.43dB
+6.43dB
+10.65dB
+12.65dB
0dB
-6dB
N/A
N/A
(default)
SPKG2-0 bits
ALC bit = “1”
+6.43dB
+8.43dB
+12.65dB
+14.65dB
+2dB
-4dB
N/A
N/A
000
001
010
011
100
101
110
111
Table 53. MIN Input
Speaker-Amp Output Gain (typ.) at R
i
= 20k
Ω;
N/A: Not available
■
Stereo Line Output (LOUT/ROUT pins)
When the LODIF bit is set to “0”, the LOUT/ROUT pins become stereo line mode. When DACL bit is “1”, Lch/Rch
signal of DAC is output from the LOUT/ROUT pins which is single-ended. When DACL bit is “0”, output signal is
muted and LOUT/ROUT pins output VCOM voltage. The load impedance is 10k
Ω
(min.). When the PMLO=LOPS bits
= “0”, the stereo line output enters power-down mode and the output is pulled-down to VSS1 by 100k
Ω
(typ.). When the
LOPS bit is “1”, stereo line output enters power-save mode. Pop noise at power-up/down can be reduced by changing
PMLO bit at LOPS bit = “1”. In this case, output signal line should be pulled-down to VSS1 by 20k
Ω
after AC coupled as
Figure 45. Rise/Fall time is 300ms(max.) at C=1
μ
F and AVDD=3.3V. When PMLO bit = “1” and LOPS bits = “0”, stereo
line output is in normal operation.
LOVL bit set the gain of stereo line output.
When LOM bit = “1”, DAC output signal is output to LOUT and ROUT pins as (L+R)/2 mono signal.
When LOM3 bit = “1”, the signal selected by MICL3 and MICR3 bits (LIN3/RIN3 inputs or MIC-Amp outputs) to
LOUT and ROUT pins as (L+R)/2 mono signal.
DAC
DACL bit
LOUT pin
ROUT pin
LOVL bit
Figure 44. Stereo Line Output
LOPS
PMLO
0
1
0
1
Mode
LOUT/ROUT pin
Pull-down to VSS1
Normal Operation
Fall down to VSS1
Rise up to VCOM
(default)
Power-down
Normal Operation
Power-save
Power-save
Table 54. Stereo Line Output Mode Select
0
1
LOVL
0
1
Gain
0dB
+2dB
Output Voltage (typ.)
0.6 x AVDD
0.757 x AVDD
(default)
Table 55. Stereo Line Output Volume Setting
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AK4649 制造商:AKM 制造商全稱:AKM 功能描述:24bit Stereo CODEC with MIC/SPK-AMP
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