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Developer Board and Interfaces Description
3.4.3
Audio Interface
The Developer Board includes analog and digital audio interfaces. The audio interface contains a hands-free speaker and micro-
phone, a headset, and an alert transducer.
Alert Transducer
3.4.3.1
Speaker
The differential speaker interface is designed as a hands-free speaker. The Developer Board uses an audio amplifier to amplify
the speaker audio output to desired levels. The speaker connector (J430) is labeled SPEAKER. The speaker output is 8 ohms
matched.
20
Speaker
Microphone
Headset
Audio Jumper
Figure 14. Audio Connectors and Jumper
Table 13. Speaker Connector Pinout (J430)
Pin #
1
Not connected
2
Speaker positive output
3
Speaker negative output
4
Not connected
Description
98-08901C67-O
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