Power Interface; Power Sources And Grounds - Huawei MC509 Hardware Manual

HUAWEI MC509 CDMA Mini PCIe Module
Hardware Guide
Pin Pin Name
No.
Mini PCI
Express
Standard
Description
49 Reserved
50 GND
51 Reserved
52 3.3Vaux

3.3 Power Interface

3.3.1 Power Sources and Grounds

For the Mini PCIe Adapter, +3.3Vaux 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. Pin Name
2, 24, 39, 41 VCC_3V3
and 52
4, 9, 15, 18, 21,
GND
26, 27, 29, 34,
35, 37, 40, 43,
and 50
Issue 03 (2014-12-26)
Pad
Type
HUAWEI
Pin
Description
PCM_DIN I
GND -
PCM_SYNC O
VCC_3V3 PI
P indicates power pins; I indicates pins for digital signal input; O indicates pins for digital

signal output. PI indicates power input pins; PO indicates power output pins.
indicates Low-level input voltage; V
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 pins are not connected, therefore, before you deal with these pins, please refer to

the corresponding hardware guide.
Pad Description
Type
PI 3.3 V DC
supply input.
- Ground
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Copyright © Huawei Technologies Co., Ltd.
Description of the Application Interfaces
Description Parameter
PCM I/F data in V
IL
V
IH
Ground -
PCM interface V
OL
sync
V
OH
3.3 V DC supply -
input.
indicates High-level input voltage; V
IH
indicates High-level output voltage.
OH
PCI Express Mini CEM Specifications 2.0 .
Parameter Min.(V)
- 3.0 V
- -
Min. Typ. Max.
(V) (V) (V)
–0.3 - 0.91
1.69 - 2.9
- - -
–0.3 - 0.91
1.69 - 2.9
3.0 3.3 3.6
indicates
OL
Typ.(V) Max.(V)
3.3 V 3.6 V
- -
15