參數(shù)資料
型號: AK4665AEN
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: 20-Bit Stereo CODEC with MIC/HP-AMP
中文描述: 20位立體聲編解碼器麥克風(fēng)/惠普腺苷
文件頁數(shù): 31/52頁
文件大?。?/td> 541K
代理商: AK4665AEN
ASAHI KASEI
[AK4665A]
MS0440-E-01
2006/05
- 31 -
Output Analog Volume (LOUT, ROUT pins)
When the LMUTE bit is “0”, ATTS3-0 bits (0dB
30dB, 2dB step, Table 30) control the LOUT/ROUT output level.
Some pop noise occurs at the changing of output volume of LOUT/ROUT.
LMUTE
ATTS3-0
FH
EH
DH
CH
:
:
1H
0H
1
x
Table 30. LOUT/ROUT Volume ATT (x: Don’t care)
Stereo Line Output (LOUT, ROUT pins)
The common voltage is VCOM, and the load resistance is min. 10k
. Stereo Lineout is powered-up when PMLO bit is
“1”. The ON/OFF of each path is set by DACL, LINL, MINL, DACR, RINR and MINR bits. When ALC2 bit is “0” and
ATTS3-0 bits is “FH”(0dB), the summation gain of each path is 0dB (typ).
Attenuation
0dB
2dB
4dB
6dB
:
:
28dB
30dB
MUTE
Default
0
LOUT/ROUT pin
LIN/RIN pin
MIN pin
LINL/RINR bit
MINL/MINR bit
DACL/DACR bit
Figure 19. LOUT/ROUT Summation Circuit
DACL/DACR
ALC2
OPGA
(L+R)/2 signal of DAC is output from LOUT and ROUT pins when LOM bit is “1”.
DACL
0
1
LOM bit
x
0
1
LOUT pin
Path OFF
L
(L+R)/2
Default
Table 31. Line Output Mode (Lch)
DACR
0
1
LOM bit
x
0
1
ROUT pin
Path OFF
R
(L+R)/2
Default
Table 32. Line Output Mode (Rch)
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