User's Manual

GE866-DUAL Hardware User Guide
1VV0301051 Rev. 2 – 2014-04-07 7
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Reserved. Page 15 of 82
Mod. 0805 2011-07 Rev.2
WARNING:
VAUX output must not be used to supply any device on the
customer application.
It is only provided as reference/supply voltage when voltage
translation to 1V8 CMOS is needed.
When its use is necessary, it is strongly recommended to
connect VAUX through a series resistor as closed as possible
to the module in order to reduce the inrush current of the
internal DC/DC supply. Use a low value resistor (e.g. 10 ohm,
1/3W) with a maximum power rating related to drained current.
NOTE:
If not used, almost all pins should be left disconnected. The
only exceptions are the following pins:
Pin signal
E2, E1 VBATT & VBATT_PA
D1, F1, G1, D2, F2, C2,
E3, F3, G3
GND
F6 AGND
A4 TXD
A5 RXD
A1 RTS
G6 V_AUX / PWRMON
G4 RESET*
C1 TXD_AUX
C2 RXD_AUX