User's Manual
Table Of Contents
- 1 Document information
- 2 Hardware design block diagram
- 3 Power Consumption
- 4 Hardware capabilities
- 5 Connector datasheet
- 6 PCB production information
Page:12
3 correspondence Extend
1-4
PCIE interface / Communicate with LTE modules
4 correspondence USB2 HOST1_VBUS_DRV USB communication
5 correspondence J22 Lower HOST_VBUS_DRV Connect the Stereo Vision
module
6 correspondence HOST2_
USB
WIFI module USBWIFI_PWR Communication with WIFI
modules
4.4.1 USB_HUB Circuits
The FE1.1S chip extends the HOST1_USB signal to a quad USB signal. Each USB signal is placed in
series with a common-mode inductor close to the USB metal interface. DP,DM is the input USB
signal,DP1~4,DM1~4 is the extended quad USB Signal. The chip is equipped with a 12M
external crystal.
Figure 13 USB_HUB circuit
4.4.2 WIFI circuit
HOST2_USB signal is connected to the RTL8188ETV's WIFI module for communication. The
module antenna feeder controls 50 ohm impedance, reserves a Pi-type circuit, and the external
chip antenna is connected with an IPX interface. WIFI module custom metal shielding cover,
common mode inductance placed close to the module.
Figure 14 WIFI communication circuit