Lantronix HDK845, User Manual

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5: Carrier Board
Snapdragon 845 HDK Hardware Development Kit User Guide 31
Audio Outputs Expansion Header J1602
Figure 5-10 J1602 Audio Outputs Expansion Header
This header expansion provides the following audio outputs:

2 differential analog audio line out

2 single ended analog audio line out

1 differential analog earpiece amplifier output (no external amp needed)

2 speaker amplifiers enable control

Voltage rails to support analog and digital mics
Table 5-10 Audio Outputs Expansion Header J1602 Pin out
Description Signal Pin NO Description Signal Pin NO
Analog audio
line out 1,
positive
differential
output
LINE_OUT1_P J1602[1] Analog audio
line out 1,
negative
differential
output
LINE_OUT1_N J1602[2]
Analog audio
line out 2,
positive
differential
output
LINE_OUT2_P J1602[3] Analog audio
line out 2,
negative
differential
output
LINE_OUT2_N J1602[4]
Audio line single
end outputs GND
reference (conn
ect to ground)
LINE_REF J1602[5] 3.3V output
power supply
MB_VREG_3P
3
J1602[6]
Analog audio
line out 1,
single ended
output
LINE_OUT1_P J1602[7] Analog audio
line out 2,
single ended
output
LINE_OUT2_P J1602[8]