Fibocom L831-EAU-01 - USB Interface; USB Interface Definition

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L831-EAU-01 Hardware User Manual Page
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图 3- 13 Reset Timing Control
Note:
RESET can be conducted only when system crash or no response occurs to L831-EAU module;
if the problem cannot be resolved after RESET, it’s recommended to pull down
FULL_CARD_POWER_OFF# for at least 500ms, and then pull it up to complete module reset.
3.4 USB Interface
The L831-EAU module supports USB 2.0(High-Speed 480 Mbits/s). For the USB timing and electrical
specification of L831-EAU module, please refer to “Universal Serial Bus Specification 2.0”。
The USB of L831-EAU module can map one MBIM interface and one GNSS Sensor in Win10 system
host.
 GNSS Sensor used for processing GNSS positioning

MBIM interface used for initiating data services
3.4.1 USB Interface Definition
Pin#
Pin Name
I/O
Reset Value
Description
Type
7
USB D+
I/O
T
USB Data Plus
0.3---3V,
USB2.0
9
USB D-
I/O
T
USB Data Minus
0.3---3V,
USB2.0