Product Info

Smart Module Series
SC200R Series Hardware Design
SC200R_Series_Hardware_Design 24 / 125
Audio Interfaces
Pin Name Pin No. I/O Description DC Characteristics Comment
MIC1_P 4 AI
Main microphone
input (+)
MIC_GND 5 AI
Microphone
reference ground
If it is not used,
connect it to the
ground.
MIC2_P 6 AI
Microphone input
for headset (+)
EAR_P 8 AO
Earpiece output
(+)
EAR_N 9 AO Earpiece output (-)
SPK_P 10 AO Speaker output (+)
SPK_N 11 AO Speaker output (-)
HPH_R 136 AO
Headphone right
channel output
HPH_REF 137 AO
Headphone
reference ground
HPH_L 138 AO
Headphone left
channel output
HS_DET 139 AI
Headset insertion
detect
High level by
default.
MIC_BIAS1 147 AO
Microphone bias
voltage 1
V
O
= 1.6–2.85 V
MIC3_P 148 AI
Secondary
microphone input
(+)
MIC_BIAS2 155 AO
Microphone bias
voltage 2
V
O
= 1.6–2.85 V
USB Interface
Pin Name Pin No. I/O Description DC Characteristics Comment
USB_VBUS 141, 142 PI
USB 5 V power
input and USB
connection detect
Vmax = 6.2 V
Vmin = 4.35 V
Vnorm = 5.0 V
USB_DM 13
AI/
AO
USB 2.0
differential data (-)
USB 2.0 standard
compliant.
90 Ω differential
impedance.
USB_DP 14
AI/
AO
USB 2.0
differential data (+)