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FIBOCOM FM150-NA User Manual
Page 48 of 72
Figure 3-14 Length Match Design of PCIe Difference Pair
3.4.2 USB Interface
The FM150 module supports USB2.0 which is compatible with USB High-Speed (480 Mbit/s) and USB
Full-Speed (12 Mbit/s).It supports USB3.1 Gen2 using for 5G high speed data throughput at the same time.
For the USB timing and electrical specification of FM150 module, please refer to Universal Serial Bus
Specification 2.0” and “Universal Serial Bus Specification 3.1”.
When module inserted PC, USB can enumerate three ACM and three NCM ports in Android/Linux system,
the ports can be configured in practical application.
3.4.2.1 USB Interface Definition
Pin#
Pin Name
I/O
Description
Type
7
USB D+
I/O
USB Data Plus
0.3-3V,
USB2.0
9
USB D-
I/O
USB Data Minus
0.3-3V,
USB2.0
29
USB_SS_TX-
O
USB
Super speed
transmit data minus
-
31
USB_SS _TX+
O
USB
Super speed
transmit data plus
-
35
USB_SS _RX-
I
USB
Super speed
receive data minus
-
37
USB_SS _RX+
I
USB
Super speed
receive data plus
-
3.4.2.2 USB2.0 Interface Application
The reference circuit is shown in Figure 3-15:
Figure 3-15 Reference Circuit for USB 2.0 Interface
