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

HUAWEI MU609 HSPA Mini PCIe Module
Hardware Guide

3.3 Power Interface

3.3.1 Power Sources and Grounds

The PCIe 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
Mini CEM Specifications 1.2 .
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

3.3.2 Power Supply Time Sequence

Power on Sequence
Do not toggle RESIN_N pin during the power on sequence. Pulling RESIN_N pin low
will extend time for module startup.
Issue 03 (2014-12-04)
 P indicates power pins; I indicates pins for digital signal input; O indicates pins for digital
signal output. PO indicates power output pins; PI indicates power input pins.
 V indicates Low-level Input voltage; V
IL
Low-level Output voltage; V
 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.
Pin Name Pad Type
VCC_3V3 PI
GND -
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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Description of the Application Interfaces
indicates High-level Input voltage; V
IH
indicates High-level Output voltage.
OH
Description Min. (V)
3.3 V DC supply
3.0
input.
Ground -
indicates
OL
PCI Express
Typ. (V) Max. (V)
3.3 3.6
- -
17