Open-Q™ 835 Development Kit based on the Snapdragon™ 835 (APQ8098) Processor User Guide Version 1.0
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Copyright Intrinsyc Technologies Corporation
Table 3.8-10 NFC Expansion Header J2401 Pin Out
Description
Signal
Pin NO
Description
Signal
Pin NO
BLSP1 bit 0 via APQ
GPIO52
NFC_BLSP1_
SPI_CLK
J2401[1]
BLSP1 bit 2 via APQ
GPIO50
NFC_BLSP1_
SPI_MISO
J2401[2]
NFC power request
GPIO via PM GPIO7
NFC_PWR_REQ
J2401[3]
SIM present GPIO via
APQ GPIO112
UIM1_PRESENT
J2401[4]
SIM Card DATA line
(UIM1) via APQ
GPIO109
UIM1_DATA
J2401[5]
150mA max 3.8V BB
CARD
power supply pin
BB CARD_SYS_
PWR
J2401[6]
SIM Card Reset line
(UIM1) via APQ
GPIO111
UIM1_RESET
J2401[7]
NFC interrupt IRQ pin via
APQ GPIO106
NFC_IRQ
J2401[8]
SIM CLK line (SIM1) via
APQ GPIO110
UIM1_CLK
J2401[9]
NFC Disable signal via
APQ GPIO105
NFC_DISABLE
J2401[10]
1.8V Voltage regulator
supply max 150mA via
PM8998
VREG_L9A_1P8
J2401[11]
BLSP8 I2C Bus-8 I2C
SDA line
BLSP8_I2C_SDA
J2401[12]
1.8V Voltage regulator
supply max 150mA via
PM8998
VREG_S4A_1P8
J2401[13]
BLSP68I2C Bus-8 I2C
CLK line
BLSP8_I2C_SCL
J2401[14]
GND
GND
J401[15]
NFC clock request
signal via PM GIO10
NFC_CLK_REQ
J2401[16]
PM8998 free running
clock via buffer
BBCLK2
J2401[17]
NFC download request
via APQ GPIO93
NFC_DWL_REQ
J2401[18]
BLSP1 1 bit via APQ
GPIO51
NFC_BLSP1_
SPI_CS_N
J2401[19]
BLSP1 3 bit via APQ
GPIO49
NFC_BLSP1_
SPI_MOSI
J2401[20
In general, if there is no need for NFC application, this expansion header can provide two
GPIOs, I2C, free running clocks, and enable voltage/ power source to external peripherals.
3.8.11 ANC Headset Jack J1501
Figure 15 J1501 ANC Headphone Jack
The ANC headset jack (J1501) is a special 3.5mm TRRS jack with ANC capabilities. It is
backwards compatible with standard headset jacks. Please contact Intrinsyc at
for compatible ANC headsets.
