NXP Semiconductors
UM12036
MCX-N9XX-EVK Board User Manual
Port[pin] /
Signal
Resistor Resistor configuration Description
P3_8 R901
P3_9 R902
P3_10 R903
P3_11 R904
For flash data signals
P3_12 R939, R957,
R958
• R939 Populated (default setting): Connects the signals
from the P3_12 pin with the onboard flash memory
• R957 Populated: Connects the signals from the P3_12
pin with the flash daughter card connector. DNP by
default.
• R958 Populated: Connects the signals from the P3_12
pin with the SAI0 interface of M.2 connector. DNP by
default.
For flash data signal / SAI0
RXD
P3_13 R940, R959,
R960
• R940 Populated (default setting): Connects the signals
from the P3_13 pin with the onboard flash memory
• R959 Populated: Connects the signals from the P3_13
pin with the flash daughter card connector. DNP by
default.
• R960 Populated: Connects the signals from the P3_13
pin with the SAI0 interface of the M.2 connector. DNP
by default.
For flash data signal / SAI0
TXD
P3_14 R943, R944,
R961
• R943 Populated (default setting): Connects the signals
from the P3_14 pin with the onboard flash memory
• R944 Populated: Connects the signals from the P3_14
pin with the flash daughter card connector. DNP by
default.
• R961 Populated: Connects the signals from the P3_14
pin with the SAI0 interface of the M.2 connector. DNP
by default.
For flash data signal / SAI RX
BCLK
P3_15 R962, R963,
R964
• R962 Populated (default setting): Connects the signals
from the P3_15 pin with the onboard flash memory
• R963 Populated: Connects the signals from the P3_15
pin with the flash daughter card connector. DNP by
default.
• R964 Populated: Connects the signals from the P3_15
pin with the SAI0 interface of the M.2 connector. DNP
by default.
For flash data signal / SAI RX
FS
Table 16. Zero-ohm resistors configuration...continued
[1] The FLASH_RST_B is driven by the MCU_RESET_B signal.
2.6 Ethernet interface
The target MCU (MCX N94X) features one Ethernet controller (ENET0) module.
On the MCX-N9XX-EVK board, the Ethernet controller connects to an RJ45 connector through an Ethernet PHY
transceiver. The transmit, receive, and other Ethernet signals are on the P1 port pins. The MCX-N9XX-EVK only
supports RMII configuration. For this reason, the TXD3 and TXD2 pins have been grounded through resistors
R260 and R261.
Table 17 describes the onboard devices supporting the Ethernet interface.
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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