Power Sources And Grounds; Power Supply Time Sequence - Huawei MU609 Mini Hardware Manual

HUAWEI MU609 Mini PCIe Module
Hardware Guide
PIN Pin Name
No.
Mini PCI
Express
Standard
Description
52 3.3Vaux

3.3 Power Sources and Grounds

The PCI Express Mini Card provides two power sources: one is 3.3 Vaux (+3.3 Vaux)
and the other is 1.5 V (+1.5 V). For the PCIe Adapter, however, +3.3 Vaux is the only
voltage supply that is available. The input voltage is 3.3 V±9%, as specified by
Express Mini CEM Specifications 1.2 .
Table 3-2 Power and ground specifications
Name
VCC_3V3
GND

3.4 Power Supply Time Sequence

Figure 3-2 shows the MU609 with 3.3 V voltage and USB D+ power supply time
sequence.
Issue V0.1 (2013-05-16)
HUAWEI Pin
Description
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.
Pins
2, 24, 39, 41and 52
4, 9, 15, 18, 21, 26, 27, 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 ground beside the Mini PCI Express connector on the host side.
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Description of the Application Interfaces
I/O Description
3.3 V DC supply rail
P
from the PC side.
Minimum
3.0 V
0 V
DC Characteristics (V)
Min. Typ. Max.
3.0 3.3 3.6
Typical Maximum
3.3 V 3.6 V
PCI
14