Smart Module Series
SC200E_Series_Hardware_Design 26 / 115
LDO_IOVDD
125
PO
1.8 V output
Vnom = 1.8 V
I
O
max = 300 mA
The power is reserved
for LCM and camera's
IOVDD. This voltage is
not adjustable.
VRTC
126
PIO
Power supply for RTC
Vomax = 3.2 V
V
I
min = 2.5 V
V
I
max = 3.2 V
If unused, keep it open.
VDD_2V8
129
PO
2.8 V output
Vnom = 2.8 V
I
O
max = 500 mA
The power supply for
camera
’s AVDD. This
voltage is not adjustable.
Audio Interfaces
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
MIC_BIAS1
147
PO
Bias voltage 1
output for microphone
Vomin = 1.6 V
Vomax = 2.85 V
The rated output current
is 3 mA.
MIC1_P
4
AI
Microphone input for
channel 1 (+)
MIC1_M
5
AI
Microphone input for
channel 1 (-)
MIC2_P
6
AI
Microphone input for
headset (+)
MIC3_P
148
AI
Microphone input for
channel 3 (+)
MIC3_M
149
AI
Microphone input for
channel 3 (-)
MIC_BIAS3
155
PO
Bias voltage 3
output for microphone
Vnom = 1.8 V
The rated output current
is 3 mA. The output
voltage is fixed at 1.8 V
and cannot be adjusted.
EAR_P
8
AO
Earpiece output (+)
EAR_M
9
AO
Earpiece output (-)
LINEOUT_P
10
AO
Audio line differential
output (+)
The typical output
voltage is 2 Vrms.
LINEOUT_M
11
AO
Audio line differential
output (-)
HPH_R
136
AO
Headphone right
channel output
HPH_GND
137
AO
Headphone reference
ground
HPH_L
138
AO
Headphone left channel
output
HS_DET
139
AI
Headset hot-plug detect
High level by default.
