Analog Devices MAX98365 Manual page 6

MAX98365 Evaluation Systems
Audio Interface Board III
Maxim's Audio Interface Board III (AUDINT3) facilitates the
evaluation of the DEV board by providing a set of features
that can be used to exercise the capabilities of the DEV
board without the need for additional audio equipment. The
main components of the AUDINT3 board are its LDO supply
voltages and its USB-to-PCM interface. The supply voltages
allow the DEV board to be evaluated with minimal amount
of external supplies. The USB-to-PCM converter allows any
computer to be used as an audio source for the DEV board's
digital audio PCM interface.
The MAX98365 DEV board connects to the AUDINT3
board through connector J1. The physical connections made
between the DEV board and AUDINT3 board are listed in
Table 8.
Table 8. AUDINT3 Connector (J1)
SIGNAL
—
BCLK2
LRCLK2
DAC2
ADC2
—
AVDD
HPVD
GND
—
GND
—
GND
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PIN SIGNAL
1 MCLK
4 BCLK1
7 LRCLK1
10 DAC1
13 ADC1
16 ID
19 DVDD
22 VDDIO
25 SDA
28 SCL
31 IRQ
34 —
37 —
Evaluates: MAX98365A/MAX98365B/
MAX98365C/MAX98365D
USB Audio Input
To use the USB streaming feature of the AUDINT3 board,
ensure that the AUDINT3 board is connected to the DEV
board, then connect the USB cable from your computer to
the USB connector J2 on the AUDINT3 board. Configure
the desired audio signal inputs using the Audio Controls
panel of the AUDINT3 interface software
described earlier, a computer can be used to supply
audio inputs over USB interface in several selectable
formats, found under the DAI mode drop-down menu.
The AUDINT3 board can also generate test signal tones
of various type, frequency, and amplitude as shown in
Figure 6.
PIN SIGNAL
2 GND
5 GPIO1
8 GPIO2
11 GPIO3
14 GPIO4
17
20 GND
23 GND
26
29
32
35
38
(Figure
PIN
3
6
9
12
15
3.3V 18
21
24
5V 27
5V 30
RST 33
— 36
— 39
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