9/11/2023 0 Comments Reduce noise v4 after effectsPlease refer to ESP32 LyraT V4.3 schematic for more details. If JTAG is not used and MicroSD Card is operated in the one-line mode, then GPIO12 and GPIO13 may be assigned to other functions. To enable the JTAG Header instead, switches in positions 3, 4, 5 and 6 should be put ON. By default, the MicroSD Card is enabled with all switches in OFF position. Used to configure function of GPIO12 to GPIO15 pins that are shared between devices, primarily between JTAG Header and MicroSD Card. Green LEDĪ general purpose LED controlled by the ESP32-WROVER-E Module to indicate certain operation states of the audio application using dedicated API. The ESP32-WROVER-E module contains ESP32 chip to provide Wi-Fi / Bluetooth connectivity and data processing power as well as integrates 4 MB external SPI flash and an additional 8 MB PSRAM for flexible data storage. The following list and figure describe key components, interfaces and controls of the ESP32-LyraT board. The block diagram below presents main components of the ESP32-LyraT.ĮSP32-LyraT V4.3 Electrical Block Diagram ¶ Functional Description ¶ The ESP32-LyraT development board is a hardware platform designed for the dual-core ESP32 audio applications, e.g., Wi-Fi or BT audio speakers, speech-based remote controllers, smart-home appliances with audio functionality(ies), etc.
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