Thundercomm TurboX C865 Dev Kit - Audio; Stereo Speaker; Digital Microphones

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29
40
USB_VBUS
42
GND
44
GPIO-AA
CAM4_PWDN
46
GPIO-BB
CAM5_PWDN/BOOT_CONFIG
1
4.2.1 Audio
C865 DEV KIT provide below interface for audio.
 One 4 data bit PCM/I2S with 6 wires: CLK, FS, D0~D3, are connected directly to the SM8250
SoC. These signals are driven at 1.8 V
 2 WSA8815 amplifiers are on-board and 2 pairs of speaker signals are routed to LS2.
 1 digital mic on development board
 3 pairs of DMIC signals are routed to LS
4.2.2 Stereo speaker
The speaker signals are routed from the 2 on board WSA8815. The signals are:
 SPK0_P - Class-D speaker amplifier output+
 SPK0_M - Class-D speaker amplifier output-
 SPK1_P - Class-D speaker amplifier output+
 SPK1_M - Class-D speaker amplifier output-
4.2.3 Digital Microphones
The expansion connector supports 3 additional default digital microphone inputs, support maximum 6
DMICs:
 DMIC_CLK1_LS2
 DMIC_DATA1_LS2
 DMIC_CLK1/DATA1_LS2 are multiplexing with on board MIC, see Section 3.18.3, switch1 of
DIP switch#16
 DMIC_CLK2
 DMIC_DATA2