Smart Module Series
SC606T Series Hardware Design
SC606T_Series_Hardware_Design 26 / 116
pin open.
GND
3, 4, 18, 20, 31, 34, 35, 40, 43, 47, 56, 62, 87, 98, 101, 112, 125, 128, 130, 133, 135,
148, 150, 159, 160, 163, 170, 173, 176, 182, 193, 195, 219, 225, 243, 257
–323
Audio Interfaces
Pin Name
Pin No.
I/O
Description
DC Characteristics Comment
MIC_BIAS
167
PO
Bias voltage output
for microphone
V
O
= 1.6
–2.85V
MIC1_P
44
AI
Microphone input
for channel 1 (+)
MIC1_N
45
AI
Microphone input
for channel 1 (-)
MIC_GND
168
Microphone
reference ground
If this pin is unused,
connect it to the
ground.
MIC2_P
46
AI
Microphone input
for headset (+)
MIC3_P
169
AI
Microphone input
for channel 2 (+)
EAR_P
53
AO
Earpiece output (+)
EAR_N
52
AO
Earpiece output (-)
SPK_P
55
AO
Speaker output (+)
SPK_N
54
AO
Speaker output (-)
HPH_R
51
AO
Headphone right
channel output
HPH_REF
50
AI
Headphone
reference ground
It should be
connected to the main
GND.
HPH_L
49
AO
Headphone left
channel output
HS_DET
48
AI
Headset hot-plug
detect
Pulled up internally.
LINE_OUT_P 227
AO
Audio line
differential output
(+)
LINE_OUT_N 228
AO
Audio line
differential output
(-)
USB Interface