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Hardware Reference Manual
SBC Pin
I/O Card
Signal Name
No.
Pin No.
J18.1
J17.1
GND
J18.2
J17.2
VREG_L13A
J18.3
J17.3
CDC_HS_DET_PMIC_CONN
J18.4
J17.4
GND
J18.5
J17.5
CDC_HPH_L_PMIC_CONN
J18.6
J17.6
GND
J18.7
J17.7
CDC_HPH_R_PMIC_CONN
J18.8
J17.8
CDC_IN3_P_PMIC
J18.9
J17.9
GND
J18.10
J17.10
CDC_EAR_M_PMIC
J18.11
J17.11
CDC_MIC2_P_PMIC_CONN
J18.12
J17.12
GND
J18.13
J17.13
CDC_HPH_REF_PMIC_CONN
J18.14
J17.14
WCD_SDM_MCLK
J18.15
J17.15
GND
J18.16
J17.16
GND
J18.17
J17.17
GRFC_0
J18.18
J17.18
WSA_SPKR_SD_N_1
J18.19
J17.19
HAP_LINE_OUT3
J18.20
J17.20
WSA_SPKR_SD_N_2
Version 1.0
Default Pin Function
Ground
PM660 Linear regulator L13
output
Headset detection
Ground
Headphone output, left channel
Ground
Headphone output, right channel
Earpiece output, plus (+)
Ground
Earpiece output, minus (-)
Microphone input 2
Ground
Headphone ground reference
Audio codec PDM clock signal and
codec master clock/ LPI bit 18
Ground
Ground
Generic RF controller bit 0
Configurable I/O
GPIO 105 /WSA8815 control pin
PWM input for haptic control
GPIO 106 /WSA8815 control pin
- 27 -
Voltage
Level
-
1.8V
-
-
-
-
-
-
-
-
-
-
-
1.8V
-
-
1.8V
1.8V
1.8V
1.8V
eInfochips Confidential
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