AOM-3841 M.2 B Key——5G（PCIE型）

5G

AOM-3841 supports RM520NGLAA(PCIe ,Advantech PN: 968DD00342).
First set M.2_B-KEY to PCIe Mode:

# fw_setenv combphy1 pcie
# reboot

M.2_B Key Pin define

M.2_B  M.2_B Connector Pin Definition
Pin	Signal	1/O	Description
1	GND(Default NC)		Ground
2	+V3.3B_M.2		3.3V source
3	GND		Ground
4	+V3.3B_M.2		3.3V source
5	GND		Ground
6	BKEY_PWR_Z_OFF	I	Active Low. A single control to turn Off WWAN solution
7	BKEY_USB_D+	O	USB Data + Differential Signal.
8	BKEY_W_DISABLE1#	O	Aactive Low,when applied by the system it will disable radio operation on the Adapter that implement radio frequency applications.
9	BKEY_USB_D-	I/O	USB Data - Differential Signal.
10	LED1#_M2_B	O	The Adapters’ status indicators via LED devices.
11	GND		Ground
12-19	Moudle Key		Moudle Key
20	N/A		Not Applicable
21	GND		Ground
22	N/A		Not Applicable
23	BKEY_WOWWAN#_GPIO	O	Used to wake the Platform by the WWAN device
24	N/A		Not Applicable
25	BKEY_DPR_1.8	O	This signal is an input directly to the WWAN Adapter from a suitable SAR sensor.
26	BKEY_W_DISABLE2#	O	Aactive Low,when applied by the system it will disable radio operation on the Adapter that implement radio frequency applications.
27	GND		Ground
28	N/A		Not Applicable
29	BKEY_USB3.0_RX-	I/O	USB3.0 RX - Differential signal.
30	UIM_RESET	I	UIM reset signal.
31	BKEY_USB3.0_RX+	I/O	USB3.0 RX+ Differential signal.
32	UIM_CLK	I	UIM clock signal.
33	GND		Ground
34	UIM_DATA	I/O	UIM data signal.
35	BKEY_USB3.0_TX-	I/O	USB3.0 TX - Differential signal.
36	UIM_VCC	I	Power source for the UIM.
37	BKEY_USB3.0_TX+	I/O	USB3.0 TX + Differential signal.
38	N/A		Not Applicable
39	GND		Ground
40	N/A		Not Applicable
41	BKEY_PERN0	O	PCIe RX - Differential signal.
42	N/A		Not Applicable
43	BKEY_PERP0	O	PCIe RX + Differential signal.
44	N/A		Not Applicable
45	GND		Ground
46	N/A		Not Applicable
47	BKEY_PETN0	I	PCIe TX - Differential signal.
48	N/A		Not Applicable
49	BKEY_PETP0	I	PCIe TX + Differential signal.
50	BKEY_PERST#	I	Active Low.PCIe Reset is a functional reset to the card.
51	GND		Ground
52	BKEY_CLKREQ#	I/O	Active Low.PCIe Clock Request is a reference clock request signal.
53	BKEY_PCIE_CLK-	I	PCIe Reference Clock signals (100 MHz)
54	BKEY_PEWAKE#	I/O	Active Low. When the Adapter supports wakeup, this signal is used to request that the system return from asleep/suspend state to service a  function-initiated wake event.
55	BKEY_PCIE_CLK+	I	PCIe Reference Clock signals (100 MHz)
56	N/A		Not Applicable
57	GND		Ground
58	N/A		Not Applicable
59	N/A		Not Applicable
60	N/A		Not Applicable
61	N/A		Not Applicable
62	N/A		Not Applicable
63	N/A		Not Applicable
64	N/A		Not Applicable
65	N/A		Not Applicable
66	N/A		Not Applicable
67	BKEY_RESET#	I	Active Low.The single control to Reset the WWAN solution.
68	BKEY_CLK	I	32.768 kHz clock supply input that is provided by the Platform chipset to reduce power and cost for the Adapter.
69	GND(Default NC)		Ground
70	+V3.3B_M.2		3.3 V source
71	GND		Ground
72	+V3.3B_M.2		3.3 V source
73	GND		Ground
74	+V3.3B_M.2		3.3 V source
75	GND(Default NC)		Ground

Configure 5G

1、Power off the device, then insert 5G module and SIM card.

Note：Make sure the device is power off before insert 4G/5G module and SIM card, otherwise the device, 4G/5G module and/or SIM card may be damaged.

2、Power on the device, Click network connection icon 

Then choose “New Mobile Broadband connection”.

then you will see the following window, click "Next" button to the next step.

3、Choose Provider's country or region of the SIM card you insert in STEP0.

4、Choose or Set the Provider's name.

4、Choose or Set the Provider's name.

5、Choose or Set APN.

6、Confirm your config and finish.

After connection, 4Gwill create a net point “wwan0”

# ping -I wwan0 www.baidu.com