The DSP board features the MCU_STM32F103C8T6, which operates normally without a pre-installed program due to the recent chip shortage. Additionally, the AD1938_CODEC decoder board includes a dedicated microcontroller for soft control, allowing users to set the sampling rate and audio interface type easily. This design enhances flexibility and performance in audio applications. On-board routines provide input / output IIS / SPDIF (off fiber / coaxial selection) interface (Single ADU1450-DSP board do not support SPDIF); For ADAU1452 series routines, the configuration page can freely select the communication mode (SPI or I2C) for SIGMASTUDIO and the target board. The SPI mode address is SPI 0x1 ADR0, I2C address is I2C 0x16 (118), and E2Prom is SPI 0x1 ADR0, which does not need to be changed. Definition of the link mode between USBi and target board (ADAU1452dsp board): SPI communication mode: 1/3/5/7/9 (CLK/CS/MISO/MOSI/GND) of the USBi terminal of the simulator corresponds to 5/4/3/2/1 of the CN2 of the target board (ADAU1452 dsp board), which is just in order. I2C communication mode: 2/4/6 (GND/SCL/SDA) of the USBi terminal of the simulator corresponds to 1/5/3 of the CN2 of the target board (ADAU1452 dsp board). Color: Black Material: ABS Package Contents: 1*DSP Development Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.