External Earpiece - Nokia n81 Service Manual

RM-179; RM-223
System Module and User Interface
Figure 79 Internal speaker circuitry

External earpiece

All galvanic accessories are connected to av connector (except for USB-devices).
The accessory audio mode is automatically enabled/disabled during connection /disconnetction of dedicated
phone accessories.
The Rapido ASIC provides the I2S digital interface for AIC33. Rapido controls and supplies a signal for AIC33
digitally. AIC33 output is directed to AV connector through audio amplifier TPA6130.
Issue 1 COMPANY CONFIDENTIAL Page 6 –37
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