User's Manual

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Functional classes Feature description illustrate
1 Input properties Input voltage 2V-6V Yes
2 Output properties Load current 300mA
3 Output properties Ripple + noise
＜3%
4
other
With enable
Yes
Figure 12 The LDO circuit
4.3 Minimal system
Uses the RK3288 chip with the following features:
Table 11 Minimum System Feature Table
Functional classes Feature description illustrate
1 Minimal system Use off-chip 24M crystal oscillators normal
2 Minimal system Press the reset button and the board is reset normal
3 Minimal system External USB OTG download normal
4.4 USB circuit
The on-board RK3288 uses a total of three USB channels, namely OTG_USB, HOST1_USB, and
HOST2_USB. Each USB power supply is controlled by MOS.
OTG_USB connects to a USB3 connector for external USB download functionality.
HOST1_USB expanded into 4 USB signals via USB_HUB circuit, connected to a dual-layer USB
connector (connected to the Stereo Vision Module),USB2 Connector and PCIE interface.
HOST2_USB connect to the WIFI module and communicate with the WiFi module.
Table 12 USB Communication Feature Matrix
Functional classes USB
signal
interface Power Control IO Instructions for use
1 correspondence OTG_US
B
USB3 OTG_VBUS_DRV External USB download
2 correspondence HOST_U
SB
J22 Upper
Floor
DPCAM_PWR Connect the Stereo Vision
module