ak4665a AKM Semiconductor, Inc., ak4665a Datasheet - Page 31

• Manufacturer Part Number: ak4665a
• Description: 20-bit Stereo Codec With Mic/hp-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
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.
The common voltage is VCOM, and the load resistance is min. 10kΩ. 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).
(L+R)/2 signal of DAC is output from LOUT and ROUT pins when LOM bit is “1”.
MS0440-E-01
Output Analog Volume (LOUT, ROUT pins)
Stereo Line Output (LOUT, ROUT pins)
LIN/RIN pin
MIN pin
DACL/DACR
DACL
DACR
LMUTE
DACL/DACR bit
Table 30. LOUT/ROUT Volume ATT (x: Don’t care)
MINL/MINR bit
LINL/RINR bit
0
1
0
1
0
1
Figure 19. LOUT/ROUT Summation Circuit
Table 32. Line Output Mode (Rch)
Table 31. Line Output Mode (Lch)
ATTS3-0
LOM bit
LOM bit
DH
FH
EH
CH
1H
0H
x
:
:
x
0
1
x
0
1
- 31 -
ALC2
Attenuation
MUTE
−28dB
−30dB
ROUT pin
LOUT pin
−2dB
−4dB
−6dB
Path OFF
Path OFF
0dB
(L+R)/2
(L+R)/2
:
:
R
L
OPGA
Default
Default
Default
LOUT/ ROUT pin
[AK4665A]
2006/05