Texas Instruments ADCx120Q1EVM-PDK, Руководство пользователя

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2.2.2 Onboard Microphone Configuration
The ADCx120Q1EVM-PDK comes equipped with 2 onboard microphones: 1x ICS-40740 analog microphone
and 1x T5818 digital microphone. The ICS-40740 can be connected to IN1 and the T5818 can be connected
to IN2 with onboard shunts using the jumper settings shown in
Table 2-1 and Figure 2-9 . MICBIAS is used to
power the ICS-40740, so header J8 must be set to MICBIAS. There must not be any connections to J2 or J3
during onboard microphone use to preserve the performance of the microphones. The PCMD3140Q1EVM-PDK
only includes the T5818 digital microphone, but the same script in
Table 2-1 and Figure 2-9 can be used for
configuring the microphone.
Table 2-1. Onboard Mic Jumper Configuration
Jumper Setting
J13 Short
J16 Short
J17 Short
J12 Short
J15 Short
J19 Short
J4 Open
J5 Open
J6 Open
J7 Open
J8 Pins 1-2; MICBIAS
J9
Open (if 3.3V AVDD is used)
Short (if 1.8V AVDD is used)
J10 Open
J11
Pins 1-2: AVDD = 3.3V
Pines 2-3: AVDD = 1/8V
J14 Short
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8 ADCx120Q1EVM-PDK, PCMD3140Q1EVM-PDK Evaluation Module SBAU398 – MARCH 2022
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