Analog Devices ADAU1373, Руководство пользователя

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Evaluation Board User Guide UG-284
Rev. 0 | Page 9 of 24
ANALOG INPUT AND OUTPUT
09
89
9
-00
5
SPEAKER
OUTPUT
HEADPHONE
OUTPUT
ANALOG
OUTPUT 2
ANALOG
OUTPUT 1
EARPIECE
OUTPUT ANALOG
INPUT 1
ANALOG
INPUT 2
ANALOG
INPUT 3
ANALOG
INPUT 4
Figure 8. Analog Input and Output Interface
On the board, there are four analog inputs (J4, J5, J8, and J9).
Near each input, there is a three-way jumper that selects which
bias voltage is routed to this input pair. These jumpers are J2, J3,
J6, and J7. The configurations are shown in Figure 9, and the
definitions of these jumper configurations are listed in Table 15,
Table 16, Table 17, and Table 18, respectively.
MICB2
MICB1
MICB2
MICB1
098
99-
0
19
POSITION A POSITION B
Figure 9. Configuration for Jumpers J2, J3, J6, and J7
Table 15. J2
Position Function
A Microphone Bias 1 connected to Analog Input 1
B Microphone Bias 2 connected to Analog Input 1
Table 16. J3
Position Function
A Microphone Bias 1 connected to Analog Input 2
B Microphone Bias 2 connected to Analog Input 2
Table 17. J6
Position Function
A Microphone Bias 1 connected to Analog Input 3
B Microphone Bias 2 connected to Analog Input 3
Table 18. J7
Position Function
A Microphone Bias 1 connected to Analog Input 4
B Microphone Bias 2 connected to Analog Input 4
On the board, there are two analog outputs (J10 and J11),
one earpiece output for mono differential signals (J18), one
headphone output (J12), and two pairs of speaker outputs
(J13/J14 and J15/J16).