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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
S66
USB3_SSRX-
USB3_HUB2_RX
M
NA
I, DIFF
USB3.0 Port3 Receive
Negative
Note: Connected to USB Hub
S67
GND
GND
NA
Power
Ground.
S68
USB3+
USB_HUB2OUT_
DP
NA
IO, DIFF
USB Port3 Data Positive
Note: Connected to USB Hub
S69
USB3-
USB_HUB2OUT_
DM
NA
IO, DIFF
USB Port3 Data Negative
Note: Connected to USB Hub
S70
GND
GND
NA
Power
Ground.
S71
US
USB3_HUB1_TX
P
NA
O, DIFF
USB3.0 Port2 Transmit
Positive
Note: Connected to USB Hub
S72
USB2_SSTX-
USB3_HUB1_TX
M
NA
O, DIFF
USB3.0 Port2 Transmit
Negative
Note: Connected to USB Hub
S73
GND
GND
NA
Power
Ground.
S74
US
USB3_HUB1_RX
P
NA
I, DIFF
USB3.0 Port2 Receive
Positive
Note: Connected to USB Hub
S75
USB2_SSRX-
USB3_HUB1_RX
M
NA
I, DIFF
USB3.0 Port2 Receive
Negative
Note: Connected to USB Hub
S76
PCIE_B_RST#
PCIE2_RST_N(G
PIO_35)
GPIO_35/
E3
O, 3.3V CMOS PCIe 2 RESET OUT
S77
PCIE_C_RST#
PCIE0_RST_N
(GPIO_128)
GPIO_128)/
AV46
O, 3.3V CMOS PCIe 3 RESET OUT
S78
PC
NC
NA
NA
NC
Note: Optionally connected
to PCIE0_RX_P
S79
PCIE_C_RX-
NC
NA
NA
NC
Note: Optionally connected
to PCIE0_RX_M
S80
GND
GND
NA
Power
Ground.
S81
PC
NC
NA
NA
NC
Note: Optionally connected
to PCIE0_TX_P
S82
PCIE_C_TX-
NC
NA
NA
NC
Note: Optionally connected
to PCIE0_TX_M
S83
GND
GND
NA
Power
Ground.
S84
PCIE_
NC
NA
NA
NC