`www.thundercomm.com.
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The slot is a push-push type with dedicated support for card detect signal (many microSD slots do not
have dedicated CD pins, they use DATA3 state as the card detected signal). C865 DEV KIT uses AP
GPIO_77 as the SD_CARD_DET_N.
3.5
Wi-Fi/BT
C865 SOM uses the Qualcomm RF chip QCA6391 solution that integrates two wireless connectivity
technologies into a single device.
The interfaces are:
WLAN-compliant with IEEE 802.11 b/g/n/ac/ax specifications, exceeding 96Boards minimum
Wi-Fi requirements
Bluetooth compliant with BT Milan and ANT+, supports BLE/BLE long range(BT specification
version 5.1), meeting the 96Boards BT requirements
The antenna socket #26, for Wi-Fi chain 0 (and optionally BT) and antenna socket #24, for Wi-Fi
chain1 are just backup solutions.
3.6
Display Interface
3.6.1
HDMI
The 96Boards specification calls for an HDMI port to be present on the board.
Because SM8250 doesn’t include a built-in HDMI interface, C865 Dev Kit deploys the built-in MIPI-DSI 2x4
lanes interface as the source for the HDMI output. A DSI to HDMI Bridge (LONTIUM SEMICONDUCTOR
LT9611UXC) performs this task and it supports a resolution from 1080p to 4K at 60Hz.
While the LT9611UXC supports automatic input video format timing detection (D-PHY1.2, DSI1.3/CSI-2 1.00
and DCS 1.02.00), an I2C channel from the SM8250 also allows users to configure the operation of this bridge.
It is QUP5 I2C interface from SoC.
This bridge supports audio as well (meeting the 96Boards requirements for providing audio via HDMI). The
