NXP Semiconductors
UM12036
MCX-N9XX-EVK Board User Manual
extended message frames and long payloads. The target MCU (MCX N94X) supports two CAN (w/wo FD)
controllers (CAN0 to CAN1).
On MCX-N9XX-EVK, only the CAN0 controller is used. The CAN0 controller connects to a 4-pin CAN header
through a CAN transceiver. The CAN0_TX and CAN0_RX signals are through ports P1_18 and P1_19,
respectively. As the TJA1057 VIO pin allows for direct interfacing with 3.3 V and 5 V (and not 1.8 V), a 2-bit
dual-supply translating transceiver (NTS0302) is provided if the target MCU P1 pins are powered with 1.8 V
supply. The NTS0302 (U50) transceiver provides bidirectional voltage translations from VDD_BRD to P3V3 and
vice versa.
Table 18 describes the HS CAN transceiver and 4-pin CAN header used on the board.
Part identifier Manufacturing part
number
Description
U39 TJA1057GT/3 High-speed CAN transceiver. Provides an interface between the CAN0
controller and the physical two-wire CAN0 bus. s
J29 - 4-pin CAN header. It is connected to the CAN0 bus and allows external
connection with the bus.
Table 18. High-speed CAN transceiver and header
Figure 22 shows the FlexCAN interface schematic.
Figure 22. FlexCAN interface schematic
Table 19 describes the 4-pin J19 CAN header pinout.
Pin Signal Description
1 CAN1_H CAN transceiver high signal
2 CAN1_L CAN transceiver low signal
3 P5V0 5 V power supply
4 GND Ground
Table 19. CAN header - pinout
UM12036 All information provided in this document is subject to legal disclaimers. © 2024 NXP B.V. All rights reserved.
User manual Rev. 1 — 20 January 2024
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