Thundercomm TurboX C865 Dev Kit, Руководство пользователя по оборудованию

Страница: 29 / 60

`www.thundercomm.com.
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

SPK0_M - Class-D speaker amplifier output-

SPK1_P - Class-D speaker amplifier

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