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AKG N90 Block Diagram(Main Board)
VBAT
LDO
D+/D-
TPS73633
CH_Prog
BATT
Full
15 Pin
LED1/2
Connec
tor to
M i
Main
MFB
MFB
Board
Voltage
Invert
Mode
Button
TPS60403
ON-OFF
LDO
TPS73633
CCW
CW
Headphone
AMP(Max 4100)
Headphone
AMP(Max 4100)
+3.3Vm
+3.3V HP
+2.5V
LDO
TPS78225
-2.5V
LDO
TPS72325
LDO
TPS62207
ACP2.0C
I2C
(PIC32MX450)
Signal selection
I2S data Switch
(SN74LVC2G04)
(SN74HC125)
+3.3VD
+1.2V
Codec(CS42L55)
ANC
H
Headback
db
sensor
max21000
max21000
MCU
SPI
Flash
(SST25VF064C)
(SST25VF064C)
DSP(CS48L11)
Aux
in
k
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