AKD4671-B Datasheet, PDF (24/51 Pages) Asahi Kasei Microsystems – stereo CODEC with built-in Microphone-Amplifier

[AKD4671-B]
(2) Output Circuits
(2-1) LOUT1/ROUT1, LOUT2/ROUT2 and LOUT3/ROUT3 Output Circuit
LOUT3
LOUT2
LOUT1
JP16
LOUT3
LOUT2
LOUT1
C44
LOUT_SEL
1u
R32
220
R33
20k
J1
LOUT
1
2
3
4
5
ROUT3
ROUT2
ROUT1
JP17
R34
HPL JACK _(short)
C45
100u
R35
16
JP58
L_16ohm
JP19
HPR JACK
R37
(short)
C47
100u
JP21
ROUT3
ROUT2
ROUT1
C49
ROUT_SEL
1u
R36
16
JP59
R_16ohm
R38
220
R40
20k
J3
1
2
3
HP
J4
ROUT
1
2
3
4
5
Figure 5. LOUT1/ROUT1, LOUT2/ROUT2 and LOUT3/ROUT3 Output Circuit
LOUT1/ROUT1, LOUT2/ROUT2 and LOUT3/ROUT3 share J1/J4.
JP16 (LOUT_SEL) and JP21 (ROUT_SEL) select each path.
(2-2) Headphone of AK4212 Output Circuit
JP13 (U2LIN1) and JP12 (U2RIN1) on sub board should be shorted, and LOUT2S and ROUT2S signal should
be input to Headphone-Amp block of AK4212.
JP13
U2LIN1
JP12
U2RIN1
HPL
HPR
R43
(short)
R44
(short)
J10
1
2
3
4212 HP
Figure 6. Headphone of AK4212 Output Circuit
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- 24 -
2007 / 05