Unex SOM-352 Series User Manual

Doc. No: Unex-QSG-21-003
17/30
A printed version of this document is an uncontrolled copy
© 2023 Unex Technology Corporation – Company Confidential
Pin
Symbol
Type
Level (V)
Description
Note
52
3.3 Vaux
P
3.3
Powered by 5V: 115mA (max)
Powered by 3.3 Vaux: 3000mA (max)
8.3. I/O Cable Pinout
The I/O cable can help user to install SOM-352 on an existing mPCIe system board
without modifying the system board hardware.
Please note that the pinout listed here is seen from the SOM-352 side. For designing
an I/O cable interface on the system board, the input and output direction must be reversed.
Table 10: I/O cable pinout
Pin
Name
Type
Level (V)
Description
J1.1
5V
P
5
5V power, OR’ing with 3.3V single
voltage mode
J1.2
RXD
I
3.3
UART RXD (PU)
Internally tied with mPCIe P17
J1.3
TXD
O
3.3
UART TXD (PU)
Internally tied with mPCIe P19
J1.4
EX_RSTn
I
3.3
CRATON2 reset (PU)
Internally tied with mPCIe P22
J1.5
1PPS
I
3.3
1PPS (PU)
Internally tied with mPCIe P49
J1.6
TAMPER#
I
3.3
Active LOW
Internally tied with mPCIe P51
J1.7
GND
G
-
Ground
The 7-pin cable connector is Molex Pico-Lock system 504051-0701 and the contact is
504052-0098.

Unex SOM-352 Series Specifications

General

Brand	Unex
Model	SOM-352 Series
Category	Control Unit
Language	English