I want to build a mic array. Can I use ADAU1467 for that? Is it pre-programmed or graphically programmable?
Sorry for the delayed response.
Please note that up to four PDM microphones can be connected as audio inputs. Each pair of microphones can share a single data line; therefore, using four PDM microphones requires two GPIO pins. Any multipurpose pin can be used as a microphone data input, with up to two microphones connected to each pin. This configuration is set up using the corresponding MPx_MODE and DMIC_CTRLx registers.
Please refer the DIGITAL PDM MICROPHONE INTERFACE (PageNo: 77 / 207) in the datasheet of ADAU146x.
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