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HUAWEI ME909 Series Mini PCIe Module
Hardware Guide
PIN
Pin Name
No.
Mini PCI
Express
Standard
Description
46
LED_WPAN#
47
Reserved
48
1.5 V
49
Reserved
50
GND
51
Reserved
52
3.3Vaux
3.3 Power 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
Table 3-2 Power and ground specifications
Pin No.
2, 24, 39, 41 and 52
4, 9, 15, 18, 21, 26, 27,
29, 34, 35, 37, 40, 43,
and 50
Issue 0.1 (2013-06-09)
HUAWEI Pin
Description
NC
PCM_DOUT
NC
PCM_DIN
GND
PCM_SYNC
VCC_3V3
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.
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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Copyright © Huawei Technologies Co., Ltd.
Description of the Application Interfaces
I/O
Description
-
Not connected
O
PCM I/F data out
-
Not connected
I
PCM I/F data in
-
Ground
O
PCM interface sync
P
3.3 V DC supply rail
from the PC side.
PCI Express Mini CEM Specifications 1.2 .
Pin Name
Minimum
VCC_3V3
3.0 V
GND
-
DC Characteristics (V)
Min.
Typ.
Max.
-
-
-
–0.3
1.8
2.1
-
-
-
–0.3
1.8
2.1
-
-
-
–0.3
1.8
2.1
3.0
3.3
3.6
Typical
Maximum
3.3 V
3.6 V
14
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