宋元浩

LYMK_0-0_

Overview

This baseboard module uses PCM5102 to decode the i2s audio signals of QCC3034, QCC5124, QCC5125 and other Bluetooth modules. The baseboard module is designed with two-way call microphone circuits that can be directly connected to the microphones to make calls.
The base module uses two LDOs with model number SGM2036-3.3YC5G/TR to power the main Bluetooth core module and PCM5102 decoding chip respectively. The digital power supply of the decoding chip and the Bluetooth core module share the same LDO, and the analog part uses an independent LDO to power the module.
The switch pin of the original Bluetooth core module requires a high level to trigger. This baseboard module adds a 74LVC2G04DW-7 chip to reverse the level, so you only need to connect the KG pin to a low level to trigger.

Design Files

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Update:2024-11-15 01:11:55

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