GE865 Hardware User Guide
1vv0300799 Rev.9 – 27-07-2009
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved
page 44 of 70
10 Audio Section Overview
The Base Band Chip of the GE865 provides one audio path both in Uplink
(
transmit
)
and in
Downlink
(receive)
direction , as shown in the next figure .
For more information refer to Telit document :
“
80000NT10007a Audio Settings Application Note
“.
Audio Section Block Diagram
Single ended
Balanced
Balanced
Single ended
Bias
16
MICN1
MIC 1
MICP1
100nF
MIC -
100nF
MIC +
xgoldafe.skd
Baseband
Audio Front End
EP
N1
EP
P1
Ear +
Ear -
Earpiece Drivers
16 Load