Motorola G30, Technical Information

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Configuration
24 G30 Developer’s Kit December 15, 2009
Audio Source Selection
The microphone and speaker audio can be routed through two different sources, the G30 audio
amplifiers or the G30 digital audio interface. The Developer Board includes an on board CODEC
that converts the G30 digital audio data to analog audio signals.
AUDIO switch of S140 (see Figure 2-21 ), selects the speaker and microphone source, as
indicated in Table 2-9 . This enables you to test the digital or analog audio channels.
Antenna
An antenna (internal or external) must be connected to the Developer Board for adequate GSM
reception. You must connect the G30 to either the on-board internal antenna or to an external
antenna.
Two RF connectors on the right side of the Developer Board, labeled INT ANT and EXT ANT , are
used for setting up the antenna ( Figure 2-15 ).
Figure 2-15: Antenna Connectors (external)
On the inside of the Developer Board, the EXT ANT connector is connected to the G30 and the
INT ANT is connected to the on-board internal antenna.
4 Microphone audio-in
5 Ground
6 Headset pull down
Table 2-8: Headset Connector Pinout (J440) (Cont.)
Pin # Description
Table 2-9: Audio Source Selection (S140-"AUDIO")
Reference Description "Off" State "On" State
Audio Selecting between Analog or
Digital Audio. Analog audio - audio sources are
the G30 audio lines. Digital audio - audio
source is the on board
CODEC.