Wavecom CM52, Integrator'S Manual

Page: 23 / 54

CM52 Integrators’ Manual
CM52 Integrators’ Manual
WI_DEV_CM52_UGD_001-001
Page 23 of 53
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Ce document est la propriété exclusive de WAVECOM. Il ne peut être communiqué ou divulgué à des tiers sans son autorisation préalable
2.4.2 Power Supply and Ground Signals
2.4.2.1 Power Supply Signal Pins
Following is a list of the power supply pins:
Pin Signal Description
4 VRTC
4
1.8 V to 3.9V ( 3.4V to 3.9V if GPS mounted)
29 VCC_AUX 13.8 volt
±
20%
31 VCC_AUX 13.8 volt ±
20%
32 VCC_AUX 13.8 volt ±
20%
33 VCC_MAIN 5 volt ±
10% regulated
34 VCC_MAIN 5 volt ±
10% regulated
Table 9: CM52 Power Supply Signals
For the power supply signals in the above table with multiple pins defined, the application shall
bus all defined pins together.
2.4.2.2 Ground Signal Pins
The ground signal in the CM52 is Digital Ground, GND, connected to the system connector
interface through pin numbers 5, 6, 8, 21 and 22.
Following is a list of the ground pins:
Pin Signal Description
5 GND Digital Ground
6 GND Digital Ground
8 GND Digital Ground
21 GND Digital Ground
22 GND Digital Ground
Table 10: CM52 Ground Signals
Digital Ground (GND) is the logical reference of all digital signals in the System Interface as well as
the DC return of the power supply signal, VCC_MAIN and VCC_AUX (used for AMPS Class I
operation). All 5 ground pins in the Wireless CPU
®
need to be connected to the application
ground. The PCB mounting holes may not to be used as substitute for the ground signal pins of
the system connector interface.
2.4.3
Power Consumption
The following tables show typical and maximum values of current that can be expected from the
Wireless CPU
®
in different modes of operation.
4
Only applicable to units with GPS or RTC functions