3. TECHNICAL BRIEF
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Wifi/BT/FM Interface Block Diagram
Gelato Audio Interface
RCV_P
LINE_ON
LINE_OP
SPK_RCV-
Receiver/
Speaker
O
LINE_OP
LINE_ON
Audio
Sub System
WM9093
HPH L
HPH_R
RCV_N
EAR_R
HPH_R
EAR1_ON
EAR1_OP
HPH_L
AUDIO_I2C_SDA
AUDIO_I2C_SCL
EAR_L
GPIO17
GPIO27
HPH_L
MSM7227T
MIC 1P
MIC_BIAS
MIC_BIAS
MIC
MIC_1P
3.5pi
Ear-Jack
connector
HS_MIC
MIC2P
MIC1P
MIC1N
MIC_1N
EARJACK_SENSE
GPIO29
3.13 Audio and sound
3.13.1 Overview of Audio path