Telit EZ10-GPRS/-PCS
Product Description
80269ST10014a, Rev. 3 – 26/09/05
Reproduction forbidden without written authorization by Telit Communications S.p.A.
Page 17 of 74
All Rights reserved – Right of modification reserved
Before connecting any equipment and before taking the EZ10 into operation, make sure
which configuration applies according to the type label of the EZ10 and that this
configuration is compatible with the equipment and the Application (as DTE) which uses the
EZ10.
Production lots based on v5 or higher have an additional writing on the SW/HW version
label:
AUX=AUDIO or AUX=GPIO.
VMOD
= direct connection to the pin of the power supply voltage input of the GM862 module (3.8V
typical) and the output of the internal switching voltage regulator. The presence of this line at pin6
is to be considered as a
low power output (<30mA)
for microphone bias supplies or pull-up
potential (requires external reduction of voltage to max. 3,6V DC!).
NOTE: Connections to VMOD shall be made only when familiar with designing circuits conform to
EMC requirements.
2.5.4.1 Pin description, RJ11 with AUDIO configuration:
All audio input / output lines have a 100 pF bypass capacitor (v.5 and onwards) to ground and are
connected to the related pins of the GM862 module over a 100 Ohms series resistor and 1uF
series capacitor.
pin Signal
I/O Function
Internal
Pull UP
Type
1 GND
- Power Ground (negative)/ Signal Ground
POWER/GND
2
ON_OFF
I/O
Additional On/Off line for REMOTE ON/OFF
47K
Ω
Pull Up to
VBATT
3 MIC_HF-
I/O audio in, negative, to EZ10 Terminal
AUDIO
4
I/O audio in, positive, to EZ10 Terminal
AUDIO
5
I/O
audio out, positive, from EZ10 Terminal
(referenced to GND)
AUDIO
6 VMOD
O Low power supply output (typ3.8V DC)
POWER OUT