I am looking for the schematic for the ReSpeaker 4-Mic linear array kit. The schematic is not available in the wiki. Could you please help?
<LINK_TEXT text=“http://wiki.seeedstudio.com/ReSpeaker_4 … pberry_Pi/”>http://wiki.seeedstudio.com/ReSpeaker_4-Mic_Linear_Array_Kit_for_Raspberry_Pi/</LINK_TEXT>
Sorry, we do not plan to open source the 4 mics schematic. thanks for understanding.
Could you share the pinout on the 40pin header on the Linear 4-Mic board? i need the pinout information so that i can connect the Linear 4-Mic to another system.
here is the 40 pins connection. thanks.
Thanks for the info. With this limited information, could you help to check my understanding?
I just need to enable the audio 4 channel capture to the Ubuntu system. I don’t need the earphone/speaker on the Mic Array kit.
Does it means that i just need to supply the 3.3V to the pin 1?
Do i need to supply 5V to the pin 2?
I will need to program the AC108 codec. So, i believe i need to connect the I2C_SDA to the pin3 and the I2C_SCL to the pin5?
What is the voltage needed by the I2C_SDA and I2C_SCL? (3.3v or 1.8v)?
i will need to provide common ground to the system. Pin 6/9/14/20/25/30/34/39.
I will program the AC108 to master mode. Means that AC108 will supply the PCM_FS and PCM_CLK to my Ubuntu system.
I only interested on Audio capture, so i just need to connect PCM_DAC Pin40 to my Ubuntu I2S_DATA_IN?
The PCM_DAC, PCM_CLK and PCM_FS operate on 1.8V ?
Is there anything i need to connect to the MCLK_EN pin13?
here is the System Diagram. It will help to get better understanding the whole system. thanks.