onsemi LC823455XGEVK Evaluation Board

onsemi LC823455XGEVK Evaluation Board is a demonstration and development platform based on the LC823455 Audio Processing System-on-Chip (SoC). The ultra-low-power LC823455 provides recording and playback with high-resolution 32-bit and 192kHz audio processing capability. The SoC is ideal for portable audio systems, wearable IoT, and smart home appliances controlled by voice user interface (VUI). The LC823455XGEVK Evaluation Board includes a pre-mounted LC823455XGEVK and a wide range of peripherals. Connectivity options include Arduino and Pmod headers, microUSB, audio in/out jacks, PCIe M.2 connector for a Wi-Fi® or BLUETOOTH® module, and more. Header pins provide access to all important pins of the LC823455 SoC.

Features

Header pins enable access to LC823455 pins
Header pins to connect the power supply or PMIC
Universal prototyping area to add custom circuits or connectors
Connectors to add an Arduino shield or Pmod module
Audio I/O
- Dedicated DAMP output terminal for SE and BTL
- Dedicated DAMP LC LPF for SE and BTL
- High-resolution, audio-ready external ADC and DAC
- Dedicated headphone amplifier for external DAC
- Volume control for a headphone amplifier
- 3.5mm stereo jacks for analog audio I/O
- 2x onboard MEMS digital microphones
USB 2.0 interface
- Device and host available
- External boost DC-DC for host and OTG operation
- Insertion/extraction detection
Storage
- Onboard eMMC and serial Flash (selectable)
- 1x microSD slot
Wireless connectivity
- PCI Express® M.2 connector for Wi-Fi/BT module
- Embedded Artists 1MW (Murata) Wi-Fi/BT M.2 module (EAR00315)

Human Machine Interface (HMI)
- 8x push switch
- 5x status LEDs
- Character LCD display
Debug
- UART with USB to serial bridge (microUSB connector)
- SWD for Cortex®-M3 (20-pin box header)
- JTAG for LPDSP (20-pin box header)
Boot Mode setting offers easy setting by two rotary switches
Clock
- No external clock source or generator required
- Onboard clock sources
  - 24.0MHz crystal resonator for PLL source
  - 32.768kHz crystal resonator for RTC
  - 32.768kHz crystal oscillator for Wi-Fi/BT module
Power
- MicroUSB connector for USB bus-powered operation
- Industrial standard, 5.5mm/2.1mm DC barrel jack
- JST XH 2-pin connector for connecting a battery
- Onboard charger ICs and voltage monitor function