3. TECHNICAL BRIEF
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3.3.7 Soft-midi and Main Speaker
The TTPCom Embedded MIDI & Polyphonic Orchestra product, “TEMPO”, is a
complete MIDI music player solution offering the following features:
• MIDI-standards compliant
• MIDI files playable as polyphonic ringtones
• Low memory footprint - less than 8 kB internal MCU system RAM
• 40 notes polyphony
• Intelligent note-stealing algorithm ensures optimum use of available synthesiser
polyphony
• Open API enabling product differentiation via the addition of MIDI music support to
existing and new customer applications
• MIDI file parser supports Standard MIDI (formats 0, 1 and 2), SMAF-MA3, GM-Lite
and SP-MIDI
The main speaker is driven directly by AD6720 AOUT1P and AOUT1N pins
and the gain is controlled by the PGA in an AD6720.
Figure 3-9: Connection Between Microphone And AD6720
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