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): 63/119頁
文件大?。?/td> 1272K
代理商: AK4648EC
[AK4648]
MS0625-E-01
2007/06
- 63 -
HPG bit Setting
0dB
Table 48. IN4+/IN4
Input
Headphone-Amp Output Gain (typ.)
IN4+/IN4
HPL/HPR
6dB
(default)
IN4+/IN4-
SPLP/SPLN or SPRP/SPRN
ALC bit = “0”
1.59dB
+0.41dB
+4.63dB
+6.63dB
-6dB
-12dB
N/A
N/A
(default)
SPKG2-0 bits
ALC bit = “1”
+0.41dB
+2.41dB
+6.63dB
+8.63dB
-4dB
-10dB
N/A
N/A
000
001
010
011
100
101
110
111
Table 49. IN4+/IN4- Input
Speaker-Amp Output Gain (typ.), N/A: Not available
Analog Mixing: Mono Input (AIN3 bit = “0”: MIN pin)
When AIN3 bit = “0”, MIN pin is used as mono input for analog mixing. When the PMMIN bit is set to “1”, the mono
input is powered-up. When the MINS bit is set to “1”, the input signal from the MIN pin is output to Speaker-Amp. When
the MINH bit is set to “1”, the input signal from the MIN pin is output from Headphone-Amp. When the MINL bit is set
to “1”, the input signal from the MIN pin is output from the stereo line output amplifier. The external resister Ri adjusts
the signal level of MIN input. Table 50
,
Table 51
,
Table 52
,
and Table 53
show the typical gain example at R
i
= 20k
Ω.
This gain is in inverse proportion to R
i
.
MIN pin
Ri
LOUT/LOP pin,
ROUT/LON pin
MINL bit
HPL, HPR pin
MINH bit
SPLP/SPLN pin,
SPRP/SPRN pin
MINS bit
Analog Input
Figure 43. Block Diagram of MIN pin
LOVL bit
0
1
MIN
LOUT/ROUT
0dB
+2dB
(default)
Table 50. MIN Input
LOUT/ROUT Output Gain (typ.) at R
i
= 20k
Ω
LOVL bit
0
1
MIN
LOP/LON
+6dB
+8dB
(default)
Table 51. MIN Input
LON/LOP Output Gain (typ.) at R
i
= 20k
Ω
R
HPG bit Setting
0dB
Table 52. MIN Input
Headphone-Amp Output Gain (typ.) at R
i
= 20k
Ω
MIN
HPL/HPR
20dB
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