Sierra Wireless MC8301 Benutzerhandbuch
2
Rev 1.12.5 Jan.10
Proprietary and Confidential
15
In the event of a discrepancy in values between this guide and the Product Specification Document (PSD), the PSD takes precedence.
2: Power Interface
Overview of operation
Note: This chapter contains information for CDMA (MC57xx) and
GSM (MC8xxx) modules.
GSM (MC8xxx) modules.
Information that is unique to specific module types is clearly
identified.
identified.
The module is designed to use a 3.3V (nominal) power supply,
provided by the host. It is the host’s responsibility to provide
safe and continuous power to the module at all times; the
module does NOT have an independent power supply, or
protection circuits to guard against electrical issues.
provided by the host. It is the host’s responsibility to provide
safe and continuous power to the module at all times; the
module does NOT have an independent power supply, or
protection circuits to guard against electrical issues.
The module’s power state is controlled by the host’s assertion /
de‐assertion of the
de‐assertion of the
W_Disable#
signal. The module also
monitors its supply voltage and requests shutdown if the
supply is insufficient.
supply is insufficient.
Power signals
The module must be connected to a 3.3V power supply (as
described in PCI Express Mini Card Electromechanical Specifi‐
cation Revision 1.1).
described in PCI Express Mini Card Electromechanical Specifi‐
cation Revision 1.1).
The MC8xxx has more power pins than the MC57xx due to
higher peak current requirements for GSM devices.
higher peak current requirements for GSM devices.
For detailed pinout and voltage / current requirements of these
modules, see the Product Specification Document for your
Mini Card.
modules, see the Product Specification Document for your
Mini Card.
Electrostatic discharge (ESD)
You are responsible for ensuring that the host has adequate
ESD protection on digital circuits and antenna ports:
ESD protection on digital circuits and antenna ports:
•
(Operational) RF port (antenna launch and RF connector):
IEC‐61000‐4‐2 — Level (Electrostatic Discharge Immunity Test)
IEC‐61000‐4‐2 — Level (Electrostatic Discharge Immunity Test)
•
(Non‐operational) Host connector interface:
JESD22‐A114‐B +/‐ 1kV Human Body Model and
JESD22‐C101 +/‐ 125 V Charged Device Model
JESD22‐A114‐B +/‐ 1kV Human Body Model and
JESD22‐C101 +/‐ 125 V Charged Device Model
•
MC5728V only: (Non‐operational) Host connector interface:
JESD22‐A114‐B +/‐ 200V Human Body Model and
JESD22‐C101 +/‐ 250 V Charged Device Model
JESD22‐A114‐B +/‐ 200V Human Body Model and
JESD22‐C101 +/‐ 250 V Charged Device Model