Robotics RB5 Development Kit Hardware User Manual
Copyright© 2020 Thundercomm Technology Co., Ltd. All rights reserved.
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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).
RB5 uses AP GPIO_77 as the SD_CARD_DET_N.
3.5
Wi-Fi/BT
RB5 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 #27, 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 QRB5165 doesn't include a built-in HDMI interface, RB5 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 QRB5165 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 RB5 uses a 4 bit I2S2 interface from the QRB5165 for this task.
