Huawei ME909 manual Power Sources and Grounds, Pin No Pin Name Minimum Typical Maximum

HUAWEI ME909 Series Mini PCIe Module
Hardware Guide	Description of the Application Interfaces

PIN	Pin Name		I/O	Description	DC Characteristics (V)
No.	Mini PCI	HUAWEI Pin			Min.	Typ.	Max.
	Express	Description
	Standard
	Description
46	LED_WPAN#	NC	-	Not connected	-	-	-
47	Reserved	PCM_DOUT	O	PCM I/F data out	–0.3	1.8	2.1
48	1.5 V	NC	-	Not connected	-	-	-
49	Reserved	PCM_DIN	I	PCM I/F data in	–0.3	1.8	2.1
50	GND	GND	-	Ground	-	-	-
51	Reserved	PCM_SYNC	O	PCM interface sync	–0.3	1.8	2.1

52	3.3Vaux	VCC_3V3	P	3.3 V DC supply rail 3.0	3.3	3.6
				from the PC side.

P indicates power pins; I indicates pins for digital signal input; O indicates pins for digital signal output. AI indicates pins for analog signal input.

The Reserved pins are internally connected to the module. Therefore, these pins should not be used, otherwise they may cause problems. Please contact with us for more details about this information.

The NC (Not Connected) pins are floating and there are no signal connected to these pins. Therefore, these pins should not be used.

3.3Power Sources and Grounds

For the Mini PCIe Adapter, +3.3 Vaux is the only voltage supply that is available. The input voltage is 3.3 V±9%, as specified by PCI Express Mini CEM Specifications 1.2.

Table 3-2Power and ground specifications

Pin No.	Pin Name	Minimum	Typical	Maximum
2, 24, 39, 41 and 52	VCC_3V3	3.0 V	3.3 V	3.6 V
4, 9, 15, 18, 21, 26, 27,	GND	-
29, 34, 35, 37, 40, 43,
and 50

To minimize the RF radiation through the power lines, it is suggested to add ceramic capacitors of 10 pF and 100 nF in the power lines beside the Mini PCIe connector on the host side.

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Issue 0.1 (2013-06-09)	Copyright © Huawei Technologies Co., Ltd.