THEMIS
THEMIS User Manual - Rev. First Edition: 1.0 - Last Edition: 2.2 - Author: A.R. - Reviewed by S.R. -Copyright © 2022 SECO S.p.A.
37
CAN Connectors
On THEMIS board there can be three optional CAN Connectors managed using as many TJA1051 CAN trasnceivers.
CAN Bus Connectors are 6-pin single line SMT connector, type MOLEX 53398-0461 or equivalent, with pinout shown in the tables below. Mating
connector: MOLEX 51021-0600 receptacle with MOLEX 50079-8000 female crimp terminals.
On these connectors, the pins CANx_L_TERM and CANx_TERM can be used to insert the 120Ohm termination at the end of CAN line. When the
termination is needed, then these pins must be connected together.
CANx_H: High-Level CAN bus line.
CANx_L: Low-Level CAN bus line.
JTAG Connector
THEMIS board is equipped with a connector reporting the JTAG signals coming from the i.MX8 processor, which
can be useful for software debugging and tracing in development phase. This connector is a 7-pin single line SMT
connector, type JST SM07B-SRSS-TB or equivalent, with pinout shown on the table to the left. Mating connector:
JST SHR-07V-S receptacle or equivalent with JST SSH-003T-P0.2-H female crimp terminals.
JTAG_RST#: power section reset input, active low signal, electrical level +1V8_RUN with a 10K
Ω
pull-up
resistor
All other JTAG signals are directly connected to i.MX8 pins with same name. Please refer to i.MX8 processor
’
s documentation for
a description of the signals and their usage.
CAN BUS #0 CN46
Pin Signal
1
+12V_ALW
2
CAN0_H
3
GND
4
CAN0_L
5
CAN0_L_TERM
6
CAN0_TERM
CAN BUS #1 CN47
Pin Signal
1
+12V_ALW
2
CAN1_H
3
GND
4
CAN1_L
5
CAN1_L_TERM
6
CAN1_TERM
CAN BUS #2 CN48
Pin Signal
1
+12V_ALW
2
CAN2_H
3
GND
4
CAN2_L
5
CAN2_L_TERM
6
CAN2_TERM
JTAG Connector CN18
Pin Signal
1
+3V3_ALW
2
JTAG_TCK
3
JTAG_TMS
4
JTAG_TDI
5
JTAG_TDO
6
JTAG_RST#
7
GND
