REL0.1
Page 31 of 52
Snapdragon 820 SMARC SOM Hardware User Guide
iWave Systems Technologies Pvt. Ltd.
Pin
No.
SMARC Edge
Connector Pin Name
Signal Name
CPU Ball Name/
Pin Number
Signal Type/
Termination
Description
S40
I2S0_SDOUT
MI2S_2_D1(GPI
O_83)
GPIO_83/
A9
O, 1.8V CMOS I2S Channel0 Data Output
S41
I2S0_SDIN
MI2S_2_D0(GPI
O_82)
GPIO_82/
C7
I, 1.8V CMOS
I2S Channel0 Data Input
S42
I2S0_CK
MI2S_2_SCK(GP
IO_80)
GPIO_80/
E5
O, 1.8V CMOS I2S Channel0 Clock
S43
ESPI_ALERT0#
NC
NA
NA
NA
S44
ESPI_ALERT1#
NC
NA
NA
NA
S45
RSVD2
NC
NA
NA
NA
S46
RSVD3
NC
NA
NA
NA
S47
GND
GND
NA
Power
Ground.
S48
I2C_GP_CK
BLSP7_I2C_SCL(
GPIO_56)
GPIO_56/
BD46
O, 1.8V CMOS General Purpose I2C Clock
S49
I2C_GP_DAT
BLSP7_I2C_SDA(
GPIO_55)
GPIO_55/
BD48
IO, 1.8V CMOS General Purpose I2C Data
S50
HDA_SYNC /
I2S2_LRCK
MI2S_3_WS(GPI
O_76)
GPIO_76/
G11
O, 1.8V CMOS I2S Channel1 Left Right Clock
S51
HDA_SDO /
I2S2_SDOUT
MI2S_3_D1(GPI
O_78)
GPIO_78/
F10
O, 1.8V CMOS I2S Channel1 Data Output
S52
HDA_SDI / I2S2_SDIN
MI2S_3_D0(GPI
O_77)
GPIO_77/
C13
I, 1.8V CMOS
I2S Channel1 Data Input
S53
HDA_CK / I2S2_CK
MI2S_3_SCK(GP
IO_75)
GPIO_75/
G9
O, 1.8V CMOS I2S Channel1 Clock
S54
SATA_ACT#
NC
NA
NA
NA
S55
USB5_EN_OC#
NC
NA
NA
NA
S56
ESPI_IO_2
NC
NA
NA
NA
S57
ESPI_IO_3
NC
NA
NA
NA
S58
ESPI_RESET#
NC
NA
NA
NA
S59
USB5+
NC
NA
NA
NA
S60
USB5-
NC
NA
NA
NA
S61
GND
GND
NA
Power
Ground.
S62
US
USB3_HUB2_TX
P
NA
O, DIFF
USB3.0 Port3 Transmit
Positive
Note: Connected to USB Hub
S63
USB3_SSTX-
USB3_HUB2_TX
M
NA
O, DIFF
USB3.0 Port3 Transmit
Negative
Note: Connected to USB Hub
S64
GND
GND
NA
Power
Ground.
S65
US
USB3_HUB2_RX
P
NA
I, DIFF
USB3.0 Port3 Receive
Positive
Note: Connected to USB Hub