The CAN Wake signals of both MCU CAN0 and MAIN CAN0 transceivers are tied together and limited the
voltage level to 1.8V using a Zener diode and terminated to SOM -CP B2B connector.
MAIN CAN2
The MAIN CAN2 port of J721E SoC is connected to the CAN transceiver Mfr. Part# TCAN1042HGVD. A 2-pin
header J25 (68002-202HLF) is provided inline for user probe option. This port does not support WAKE function.
The signals MCAN2_H and MCAN2_L are terminated to a 3-pin header J28 (68001-403HLF) with 120E split
termination.
The STB signal is an active High signal held high with external pull up by default. The GPIO control from MAIN
domain provided to pull the line low.
To interface these CAN signals to Test system, the below given custom converter to be prepared.
Figure 4-33. CAN Header Connections to DB9/Test Instrument
www.ti.com J721E EVM Hardware Architecture
SPRUIS4D – MAY 2020 – REVISED MARCH 2022
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Jacinto7 J721E/DRA829/TDA4VM Evaluation Module (EVM) 63
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