Audio Io Expansion (Pmic) Header J3600 - Intrinsyc Open-Q 2100 User Manual

Open-Q™ 2100 Development Kit based on the Snapdragon™ 2100 (APQ8009W) Processor User Guide Version 1.4

3.9.9 Audio IO Expansion (PMIC) Header J3600

Pin 1.
This expansion header provides the following audio inputs and outputs:
1. 3 analog mics (including mic in headset)
2. 1 Earphone out
3. 1 Headset out (Optional)
4. 1 Speaker out
5. Voltage rails/ reference to support analog
The table below outlines the pin out information of the audio inputs expansion header J3600:
Table 3.9-8 Audio IO Expansion (PMIC) Header J3600 Pin out
Description
Analog mic 1 signal
GND reference to the
PMIC bias
Analog mic 3 signal
GND
Analog mic 2 signal
(headset mic)
GND
Earphone out (+)
Earphone out (-)
Note: The headset interfaces are option on the header J3600. Please refer to the carrier board schematic
for appropriate resistor stuffing necessary to route headset signals to this header.
Figure 16 J3600 Audio IO Expansion Header
Signal Pin NO
CDC_MIC1_P J3600-1
_C
CDC_GND_C J3600-3
FILT
CDC_MIC3_P J3600-5
_C
GND J3600-7
CDC_HDS_MI J3600-9
C2_P_C
GND J3600-11
CDC_EAR_C J3600-13
_P
CDC_EAR_C J3600-15
_N
Copyright Intrinsyc Technologies Corporation
Description
Speaker out (+)
Speaker out (-)
GND
Headset out (Left)
Headset out (Right)
GND
Headset detect
GND (headphone
reference)
28
Signal Pin
Number
SPKR_OUT_C J3600-2
_P
SPKR_OUT_C J3600-4
_N
GND J3600-6
CDC_HPH_L_ J3600-8
C
CDC_HPH_R_ J3600-10
C
GND J3600-12
CDC_HS_DET J3600-14
_C
CDC_HPH_RE J3600-16
F