NXP Semiconductors MIMXRT1040-EVKUM User manual

MIMXRT1040-EVKUM
MIMXRT1040-EVK Board User Manual
Rev. 0 — 13 January 2023 User manual
Document information
Information Content
Keywords MIMXRT1040-EVKUM, i.MX RT1040 processor, MIMXRT1040-EVK board,
QSPI flash, audio interface, 3-axis accelerator, S/PDIF, CAN, OpenSDA,
JTAG, LPUART, LPC4322 microcontroller
Abstract This document provides detailed information about MIMXRT1040-EVK board
interfaces, power supplies, clocks, connectors, jumpers, user buttons, and
LEDs.

NXP Semiconductors MIMXRT1040-EVKUM
MIMXRT1040-EVK Board User Manual
1 Overview
The MIMXRT1040-EVK board provides a comprehensive platform for design and
evaluation of most commonly used features of the NXP i.MX RT1040 application
processor, in a small and low-cost package. This board is an entry-level development
board, meant to familiarize users with the processor before investing a large amount of
resources in more specific designs.
The i.MX RT1040 is a new processor family that features advanced implementation
of the high-performance Arm Cortex-M7 core. It offers high-performance processing
optimized for lowest power consumption and best real-time response.
The board is lead-free and RoHS-compliant.
This document provides detailed information about MIMXRT1040-EVK board
interfaces, power supplies, clocks, connectors, jumpers, user buttons, and LEDs.
For further information about MIMXRT1040-EVK, see https://www.nxp.com/design/
development-boards/i-mx-evaluation-and-development-boards/i-mx-rt1040-evaluation-
kit:MIMXRT1040-EVK.
1.1 Acronyms
The table below lists and explains the acronyms and abbreviations used in this
document.
Term Description
ADC Analog-to-digital converter
CAN Controller area network
CAN-FD Controller Area Network Flexible Data-Rate
CLK Clock
DIP Dual Inline Package
DNP Do not populate (Component not present on the board)
eLCDIF Enhanced LCD Interface
FlexCAN Flexible Controller Area Network
HMI Human Machine Interface
IoT Internet of Things
LCD Liquid Crystal Display
LPI2C Low-power Inter-Integrated Circuit (I2C)
MCU Microcontroller Unit
OpenSDA Open-standard serial and debug adapter
PWM Pulse Width Modulation
SDHC Secure Digital High Capacity
SEMC Smart External Memory Controller
SWD Serial Wire Debug
TFT Thin Film Transistor
Table 1. Acronyms and abbreviations
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Term Description
USB Universal Serial Bus
LPUART Low Power Universal Asynchronous Receiver Transmitter
Table 1. Acronyms and abbreviations...continued
1.2 Related documentation
The table below lists and explains the additional documents and resources that can be
referred to if more information about MIMXRT1040-EVK board is required. Some of the
documents listed below may be available only under a non-disclosure agreement (NDA).
To request access to these documents, contact local field applications engineer (FAE) or
sales representative.
Document Description Link/how to access
i.MX RT1040 Processor Reference
Manual (IMXRT1040RM)
Intended for system software,
hardware developers, and application
programmers who want to develop
products with this device
IMXRT1040RM.pdf
i.MX RT1040 Crossover Processors
for Consumer Products Data Sheet
(IMXRT1040CEC)
Provides information about electrical
characteristics, hardware design
considerations, and ordering
information
Contact NXP local field applications
engineer (FAE) or sales representative.
i.MX RT1040 Crossover Processors
for Extended Industrial Products
(IMXRT1040XEC)
Provides information about electrical
characteristics, hardware design
considerations, and ordering
information
Contact NXP local field applications
engineer (FAE) or sales representative.
MCUXpresso Software Development
Kit (SDK) documentation
MCUXpresso Software Development
Kit (SDK) is a comprehensive software
enablement package designed to
simplify and accelerate application
development with NXP MCUs based on
Arm Cortex-M cores.
MCUXpresso Software Development
Kit (SDK) documentation
i.MX RT1040 Board Design Resources Board design files, schematics, layout
files, and other resources
i.MX RT1040 Board Design Resources
i.MX RT1040 Documentation For supportive documentation related to
i.MX RT1040 processor
i.MX RT1040 Documentation
Table 2. Related documentation
1.3 Kit contents
The table below lists the items included in the MIMXRT1040-EVK board kit.
Item Quantity
MIMXRT1040-EVK board 1
USB Type A to micro-B cable 1
Table 3. Hardware kit contents
Note: Power adapter, micro-SD card, and LCD module are not included in the board kit.
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1.4 Block diagram
The figure below shows the MIMXRT1040-EVK block diagram.
POWER
NXP
MIMXRT1042XJM5B
SEMC
FlexSPI
CAN x1
Ethernet x1 (RMII)
CODEC
HP MIC
LCD
4.3" TFT 480 x 272
SDRAM
SD SLOT
SDHC
USB OTG
JTAG / FREELINK
SPDIF
ARDUINO
WiFi / BLE
SDHC/UART
/I2S
I2C/INT
100Base-TMicrel KSZ8081
WINBOND 256Mb:
W9825G6KH-5J
PIN Header PIN Header
I2S SPDIF Arduino JTAG/OPENSDA
SDIO/UART
/I2S
DISP USB OTG1 CAN RMII
FlexSPI
I2C/INT
SD0
WINBOND:
Motion Sensors
FXLS8974CFR3
T-Flash
M.2 CON
TJA1057GT/3
Wolfson WM8960 IN/OUT
POWER
QSPI FLASH
W25Q64JVSSIQ
x16 bits
Figure 1. MIMXRT1040-EVK block diagram
1.5 Board pictures
The figure below shows the top-side view of the MIMXRT1040-EVK board. It also shows
the connectors, push buttons, and LEDs available on the top side of the board.
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J2
(JTAG)
J43
(Ethernet)
J23
(Audio connector)
P1
(Microphone)
J34
(HP Jack)
(M.2 Connector)
J8
J32, J33
(Arduino
Connectors)
J48
U24
SW5 SW8 SW7
(Reset)
J1
(Micro USB)
SW1
SW3 and SW4
(boot mode
switches)
J62
(Mikroe-click
connector)
D8
(User LED)
J17, J16
J70
(Mikroe-click
connector)
J22
SD Card Slot
D3
D2
J15
D6
D1 (SDA)
D16 (Main
Power LED)
J24
(LPI2C3)
(LPI2C3
processor)
(i.MX RT1040
processor)
slide switch)
SW6 (Power
J45
Power Switch
(DC Power Jack)
(Reset LED)
(Reset)
(LPC4322
JTAG)
(Wake Up
Button)
(SDRAM)
U16
(USB_OTG1)
(QSPI Flash)
(ON-OFF
Button)
(Bluetooth
LED)
(WiFi LED)
(Arduino
Connectors)
Figure 2. Connectors, push buttons, and LEDs on top side of the MIMXRT1040-EVK board
The figure below shows the jumpers on top side of the MIMXRT1040-EVK board.
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J25
J21
J57
J29
J55 J40
J44
J6
J1
J13
J11J9
J4
J3
J10
J27
J26
J28
J30
J35, J36,
J37, J41
J80
J5
J12
Figure 3. Jumpers on top side of the MIMXRT1040-EVK board
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The figure below shows the bottom side of the MIMXRT1040-EVK board.
Figure 4. Bottom view of MIMXRT1040-EVK board
J49
(LCD connector)
J49
(LCD connector B1-B6)
1.6 Board features
The table below lists the features of the MIMXRT1040-EVK board. Figure 2 shows
different components of the MIMXRT1040-EVK board.
MIMXRT1040-EVK board
feature
Processor feature
used
Description
Processor - MIMXRT1042XJM5B
Note: For details of the I.MX RT1040 processor, see i.MX RT1040
Processor Reference Manual.
Power supply - MIMXRT1040-EVK board can be powered by any of the following (+5
V) sources:
•External DC power supply connected to input power jack, J45
•USB 2.0 Micro-AB connector operating in Device mode, J48
•USB 2.0 Micro-AB connector for OpenSDA, J1
SDRAM SEMC •Supports 256 Mbit SDRAM W9825G6KH-5J
•Operates at 3.3 V 150 mA Imax and maximum frequency 166 MHz
SDHC µSDHC1 •Supports a micro-SDHC connector, J22, for connecting an external
micro-SD 3.0 card
•Operates at 1.8 V/3.3 V
Table 4. MIMXRT1040-EVK board features
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MIMXRT1040-EVK board
feature
Processor feature
used
Description
FlexSPI FlexSPI •8 MB on-board QSPI NOR flash memory (3.3V) - as boot device
Ethernet RMII interface •Supports one 10Base-T/100Base-TX Ethernet port through one RJ45
connector with link and activity status
USB One USB 2.0 OTG
controller (OTG
with integrated
PHY)
•Supports high-speed (480 Mbit/s), full-speed (12 Mbit/s), and low-
speed (1.5 Mbit/s) operations
•Single USB 2.0 Micro-AB connector operating in Host or Device
mode
Audio SAI, I2S, LPI2C3 •3.5 mm audio jack for headset, J34
•One on-board MIC, P1
•S/PDIF connectors, J7 and J14 [DNP]
•Connectors for speakers, J39 and J38 [DNP]
•2x12 main audio connector, J23
•Uses 3.3 V supply (SPDIF_VCC) from J21 jumper
Debug •10-pin JTAG connector, J15 for debugging LPC4322
•20-pin JTAG connector, J2 for debugging i.MX RT1040
•LPC4322 microcontroller that can be used as CMSIS DAP on
MIMXRT1040-EVK board
3-axis digital sensor I2C1 FXLS8974CFR3
•Supports motion sensing
•3-axis accelerometer
I/O headers •J16, J17, J32, and J33 headers compatible with Arduino daughter
card
LCD eLCDIF •Supports 1x40 + 1x 6 LCD connector (J49)
•Supports TFT display and backlight control
M.2 connector and Wi-Fi/
Bluetooth module
•Supports M.2/NGFF Key E mini card 75-pin connector, J8
•Supports Murata type 1XK module Wi-Fi/Bluetooth module, used with
the M.2 connector
CAN/CAN-FD FlexCAN •Supports high-speed CAN transceiver (NXP TJA1057GT) to provide
an interface for the CAN ports to send and receive CAN signals to
and from the processor
•Also supports CAN-FD
PCB 11 cm x 15 cm 4-layer board
Table 4. MIMXRT1040-EVK board features...continued
1.7 Connectors
Connectors are on-board devices that allow to connect external devices to the board.
Figure 2 shows the MIMXRT1040-EVK board connectors. The table below describes the
connectors.
Part
identifier
Connector type Description Reference section
P1 Microphone On-board microphone Section 2.9
Table 5. MIMXRT1040-EVK board connectors
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Part
identifier
Connector type Description Reference section
J1 USB 2.0 Micro-
AB connector
Debug USB for OpenSDA. Provides 5 V power
supply to the board and CMSIS DAP debug support.
This also provides UART for console messages.
Section 2.19.1
J2 2x10 connector JTAG connector for debugging i.MX RT1040 Section 2.19.2
J8 75-pin connector M.2 mini card connector Section 2.16
J15 2x5 connector JTAG connector for debugging LPC4322 Section 2.19.2
J16 1x8 connector
J33 1x6 connector
J17 1x10 connector
J32 1x8 connector
I/O headers compatible with the Arduino daughter
card
Section 2.11
J22 SD card SD card connector Section 2.5
J23 2x12 connector Audio main connector Section 2.9.2
J24 8-pin MFI connector Section 2.14
J34 Audio jack Audio headset connector Section 2.9.1
J43 RJ45 jack Ethernet connector Section 2.7
J45 5 V power
supply connector
DC power jack Section 2.2
J48 USB 2.0 Micro-
AB connector
Operates in host mode or device mode
depending on the state of USB1_OTG_ID signal.
•If USB1_OTG_ID signal is connected to ground,
USB works in Host mode.
•If USB1_OTG_ID signal is left floating, it works in
Device mode.
Section 2.8
J49 1x40 + 1X6
connector
LCD connector Section 2.15
J62,
J70
1x8 connectors Mikroe Click Connectors for Micro SD card. (Signals
are shared with Arduino.)
SD card interface
Table 5. MIMXRT1040-EVK board connectors...continued
1.8 Jumpers
Jumpers (or shorting headers) are small connectors that allow to choose from two or
more options available. Jumpers are installed during board assembly and do not require
any changes. In MIMXRT1040-EVK board, all jumpers are 2/3-pin connectors with two
settings: open and shorted. Figure 3 highlights the MIMXRT1040-EVK board jumpers
available for use. The table below describes the jumpers.
The following is a list of all of the jumper options on the MIMXRT1040-EVK board.
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Part
identifier
Jumper
type
Description Jumper settings
J3, J4 1x2 header OpenSDA JTAG
debug interface
•Open: Isolates the onboard processor from OpenSDA JTAG
interface
•Shorted: Connect the TDO_SWO and JTAG_TDI_L signals
from OpenSDA to i.MX RT1040 (default setting)
J5 1x2 header OpenSDA reset •Shorted: OpenSDA sends reset to i.MX RT1040 (default
setting)
•Open: JTAG reset is enabled
J6 1x3 header Reset selection
through Freelink
interface
•1-2: OpenSDA sends reset to i.MX RT1040 (default setting)
•2-3: SW1 sends reset to i.MX RT1040. This setting should
be used when OpenSDA is not powered
J9, J10 1x2 header OpenSDA SWD
debug interface
•Open: Isolates i.MX RT1040 from OpenSDA SWD interface
•Shorted: Connect the TCK_SWCLK and TMS_SWDIO signals
from OpenSDA to i.MX RT1040 (default setting)
J11, J13 1x2 header UART •Open: Disconnects i.MX RT1040 LPUART1 signals from the
OpenSDA
•Shorted: OpenSDA provides LPUART1 interface for i.MX
RT1040 (default setting)
J12 1x2 header Force DFU boot •Open: (default setting)
•Shorted: It enables DFU Boot Mode mode for LPC4322
processor (OpenSDA)
J18 1x2 header S/PDIF output
isolation jumper
•Not populated on board (DNP) (By default)
•If user wants to use S/PDIF circuit, the jumper should be
shorted.
J20 1x2 header S/PDIF input
isolation jumper
•Not populated on board (DNP) (By default)
•If user wants to use S/PDIF circuit, the jumper should be
shorted.
J21 1x2 header S/PDIF interface •Not populated on board (DNP) (By default)
•If user wants to use S/PDIF circuit, the jumper should be
shorted.
J25 1x2 header Power domain •Shorted: Connects VDD_HIGH_IN_3V3 power supply to the
i.MX RT1040 processor (default setting)
•Open: Disconnects VDD_HIGH_IN_3V3 power supply from
the processor
J26 1x2 header Power domain •Shorted: Connects VDDA_ADC_3V3 power supply to the i.MX
RT1040 processor (default setting)
•Open: Disconnects VDDA_ADC_3V3 power supply from the
processor
J27 1x2 header Power domain •Shorted: Connects MCU_DCDC_IN_3V3 power supply to the
i.MX RT1040 processor (default setting)
•Open: Disconnects MCU_DCDC_IN_3V3 power supply from
the processor
Table 6. MIMXRT1040-EVK board jumpers
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Part
identifier
Jumper
type
Description Jumper settings
J28 1x2 header Arduino reset •Shorted (default setting)
•Open: Isolates reset signal from RT1040 and Arduino
interface
J29 1x2 header Power domain •Shorted: Connects VDD_SOC_IN power supply to the
processor (default setting)
•Open: Disconnects VDD_SOC_IN power supply from the
processor
J30 1x2 header Power domain •Shorted: Connects VDD_SNVS_IN power supply to the
processor (default setting)
•Open: Disconnects VDD_SNVS_IN power supply from the
processor
J35 1x2 header Audio jumper •Shorted: Audio codec is connected to the SAI1_TX_BCLK
signal routed to i.MX RT1040 and main audio connector, J23
(default setting)
•Audio codec is disconnected from i.MX RT1040
J36 1x2 header Audio jumper •Shorted: Audio codec is connected to the SAI1_TX_SYNC
signal routed to i.MX RT1040 and main audio connector, J23
(default setting)
•Audio codec is disconnected from i.MX RT1040
J37 1x2 header Audio jumper •Shorted: Audio codec is connected to the SAI1_TXD signal
routed to i.MX RT1040 and main audio connector, J23
(default setting)
•Audio codec is disconnected from i.MX RT1040
J40 2x5 header Main Power •1-2: 5V_SYS power supply via J45
•3-4: 5V_USB_OTG power supply via J48
•5-6: P5V_SDA_S power supply via J1 (default setting)
J41 1x2 header Audio jumper •Shorted: Audio codec is connected to the SAI1_RXD signal
routed to i.MX RT1040 and main audio connector, J23
(default setting)
•Audio codec is disconnected from i.MX RT1040
J44 1x2 header Power domain •Shorted: Connects DCDC_3V3 power supply to the i.MX
RT1040 processor (default setting)
•Open: Disconnects DCDC_3V3 power supply from the i.MX
RT1040 processor
J55 1x2 header Power domain •Open: SDIO signals use 3.3 V supply (default setting)
•Shorted: SDIO signals are switched to 1.8 V supply
J57 1x3 header SD card / eMMC
Flash selection
•1-2: Flash is enabled.
•2-3: SD card is enabled. (default setting)
J80 1x2 header M.2 Socket Open: (default setting)
Table 6. MIMXRT1040-EVK board jumpers...continued
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1.9 Push and slide buttons
The MIMXRT1040-EVK board has four push buttons and one slide button. The following
table explains the push and slide buttons on the MIMXRT1040-EVK board. Figure 2
shows push and slide buttons on the MIMXRT1040-EVK board.
Part
identifier
Switch
type
Description
SW6 Slide
switch
Controls the power of the MIMXRT1040-EVK board when the power supply is connected to
J45 power jack.
•ON position: Connects the 5 V power supply to the board main power system.
•OFF position: Turns off the board power immediately.
SW8 Push
button
ON/OFF button.
•Short pressing in OFF mode causes the internal power management state machine to
change state to ON. In ON mode, a short pressing generates an interrupt as a software-
controllable power down.
•Pressing the button for approximate 5 seconds or more causes a forced OFF. However, both
the boot mode inputs can be disconnected.
SW1 and
SW7
Push
button
Reset button
•SW7 is the power-on reset button. Pressing SW7 in the power on state forces to reset the
system power (except SNVS domain). The processor immediately turns off and reinitiates a
boot cycle from the processor power off state.
•SW1 asserts reset to i.MX RT1040.
SW5 Push
button
Wake-up button
•SW5 is a Wake Up button. Pressing this button wakes up the processor from any low-power
mode.
Table 7. Push and slide buttons
1.10 LEDs
The MIMXRT1040-EVK board has light-emitting diodes (LEDs) to monitor system
functions, such as power-on, reset, board faults, and so on. The information collected
from LEDs can be used for debugging purposes.
LEDs are highlighted in Figure 2. The table below describes the MIMXRT1040-EVK
board LEDs.
Part identifier LED color LED name Description (When LED in ON)
D16 Green/Red Main power supply Main Power Supply (D16)
•Green: 5 V DC main supply is working correctly.
•Red: J45 input voltage is over 5.6 V.
•Off: Board is not powered.
D6 Red Reset Indicates Reset command is sent to i.MX RT1040 via
OpenSDA or when SW1 is pressed.
D1 Red SDA LED Indicates OpenSDA status
•Blinking: When OpenSDA is in use.
•OFF: When OpenSDA is not in use.
D8 Green User LED User configurable
D2 Red Bluetooth LED Indicates the Bluetooth status
Table 8. MIMXRT1040-EVK board LEDs
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Part identifier LED color LED name Description (When LED in ON)
D3 Red Wi-Fi LED Indicates the Wi-Fi status
Table 8. MIMXRT1040-EVK board LEDs...continued
2 Functional description
2.1 Processor
The i.MX RT1040 is a new processor family featuring NXP advanced implementation
of the Arm Cortex-M7 core. The i.MX RT1040 applications processor provides high
CPU performance and best real-time response. This processor uses various memory
interfaces that include SDRAM, raw NAND FLASH, NOR flash, SD/eMMC, and Quad
SPI. It also provides interfaces for connecting peripherals, such as WLAN, Bluetooth,
GPS, displays, and accelerometer. i.MX RT1040 has rich audio and video features,
including LCD display, basic 2D graphics, S/PDIF, and I2S audio interface.
The i.MX RT1040 applications processor can be used in areas, such as industrial HMI,
IoT, motor control, and home appliances. Its flexible architecture enables it to be used in
a wide variety of other general embedded applications too. The i.MX RT1040 processor
provides all interfaces necessary to connect peripherals, such as WLAN, Bluetooth, and
GPS, and multiple displays.
For more information about the processor, refer to the following documents:
•i.MX RT1040 Crossover Processors for Consumer Products Data Sheet,
•i.MX RT1040 Crossover Processors for Extended Industrial Products Data Sheet, and
•i.MX RT1040 Processor Reference Manual.
See Section 1.2.
2.1.1 Boot mode configurations
i.MX RT1040 supports four boot modes (one is reserved for NXP use). The boot mode is
selected based on the binary value stored in the internal BOOT_MODE register.
Switch, SW4[3:4], is used to select the boot mode on the MIMXRT1040-EVK board.
For each switch:
•If the switch is ON, the value is '1'
•If the switch is OFF, the value is '0'
BOOT_MODE[1:0] (SW4[3:4]) Boot type
00 Boot from fuses
01 Serial downloader
10 Internal boot
11 Reserved
Table 9. Boot mode pin settings
Note: For more details about the boot modes on i.MX RT1040, see chapter "System
Boot" in i.MX RT1040 Processor Reference Manual.
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For SD boot, the card detect signal (SD_CD_SW), from the SD card socket to the
processor must be low. The signal is low when an SD card is detected in the socket. The
SD_CD_SW signal is high when no SD card is present or SD card is not detected in the
socket.
For normal boot, configure the external BOOT_CFG GPIOs to select the internal boot
option. The following table explains the boot device settings for i.MX RT1040. The
SW4[1:2] bits are used to select the boot device.
SW4[1] SW4[2] SW4[3] SW4[4] Boot Device
OFF OFF ON OFF QSPI NOR flash
ON OFF ON OFF SD card
Table 10. i.MX RT1040 boot device settings
Note: For more information about the MIMXRT1040-EVK board boot device selection
and configuration, see the documents listed in Section 1.2.
2.2 Power supply
Any of the following (+5 V) sources can be used to power up the MIMXRT1040-EVK
board:
•External DC power supply connected to input power jack, J45
•USB 2.0 micro-AB connector operating in Device mode, J48
•USB 2.0 micro-AB connector for OpenSDA, J1
A slider switch SW6 turns ON/OFF the 5 V external DC power supply connected to J45:
•If SW6 is set to 2-3/5-6, then the 5 V power supply is ON
•If SW6 is set to 1-2/4-5, then the 5 V power supply is OFF
The primary power supplies are used to produce secondary power supplies for the
board to power up the i.MX RT1040 processor and other board components. These
components include SDRAM memory, SD card socket, QSPI NOR flash memory,
Ethernet PHY, audio codec, Arduino connectors, accelerometer, LCD connector, M.2
connector, CAN transceiver, JTAG connector, push buttons, and LEDs.
The following figure shows the MIMXRT1040-EVK board power tree.
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Figure 5. Power tree
The following diagram shows the power control logic of the MIMXRT1040-EVK board.
•SNVS is powered first and then PMIC_REQ_ON is switched on to enable external DC-
DC to power up other power domains
•ON/OFF button is used to switch ON/OFF PMIC_REQ_ON to control power modes
•RESET button and WDOG output are used to reset the system power
Figure 6. Power control diagram
The following table explains the power rails on the board.
Power source Manufacturing
part number
Power supply rail Description
From external power
source through input
power jack (J45)
- DC_5V_IN (5 V) Primary power supply. One of the three power source
options for producing 5V_SYS supply.
Table 11. MIMXRT1040-EVK board power supplies
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Power source Manufacturing
part number
Power supply rail Description
From external
source through
USB connector J48
(when the connector
operates in Host
mode)
or
from 5V_SYS supply
through power switch
U30 (when the
connector operates
in Device mode)
- 5V_USB_OTG (5 V) One of the three power source options for producing
5V_SYS supply.
From external
source through USB
connector J1 (power
switch U7 enables
5 V power from the
USB connector)
- P5V_SDA (5 V) Supplies power to Freelink interface (SDA) (LPC4322
JET100)
From P5V_SDA
supply through
power switch U7
- P5V_SDA_S (5 V) One of the three power source options for producing
5V_SYS supply
From 5V_USB_
OTG / P5V_SDA_S /
DC_5V_IN through
jumper J40
- 5V_SYS (5 V) •Produces 5V_USB_OTG supply through power
switch U30 when USB connector J48 is in Device
mode
•Supplies power to power regulators U21, U29, and
U31
•Supplies power to mikroBUS socket connector J70,
Arduino connector J32, and backlight control
•Core supply for CAN transceiver U23
•One of the source power supplies for main audio
connector
•One of the source power supplies for audio codec
- - VDD_SOC_IN (0.925 V
to 1.3 V)
Internal SoC supply (core supplies input voltage)
U31 UM1750S-00
(Union
Semiconductor)
VLDO_3V3 (3.3 V) •Primary power source option for producing VDD_
SNVS_3V3 supply
•Alternative power source option for producing MCU_
DCDC_IN_3V3 supply
•Alternative power source option for producing VDD_
HIGH_IN_3V3 supply
U21 UM1750S-00
(Union
Semiconductor)
NVCC_SD
(3.3 V (default value) /
1.8 V) max 350 mA
Provides NVCC_SD0 power to the processor.
Table 11. MIMXRT1040-EVK board power supplies...continued
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Power source Manufacturing
part number
Power supply rail Description
U29 MP2144GJ
(Monolithic
Power Systems)
DCDC_3V3 (3.3 V)
(Current 2 A
Quiescent current: 40
μA)
Switching Voltage Regulator, used to power:
•Produces SENSOR_3V3 supply, which is used to
power accelerometer U66
•Produces SDRAM_3V3 supply, which is used to
power SDRAM U16
•Produces VSD_3V3 supply, which is used to power
SD card socket J22
•Produces WL_3V3 supply, which is used to power
M.2 connector
•Produces PERI_3V3 supply, which is used to produce
LCD_3V3 supply for LCD connector
•Produces ENET_3V3 supply, which is used as 3.3 V
analog supply for Ethernet PHY U18
•Produces V_TGTMCU supply, which is used to
change voltage level of i.MX RT1040 processor
signals going to / coming from Freelink interface
•Produces VDDA_ADC_3V3 supply, which provides
VDDA_ADC_3P3 power to the processor
•Produces NVCC_SEMC_3V3 supply, which provides
NVCC_EMC powers to the processor
•Produces NVCC_GPIO_3V3 supply, which provides
NVCC_GPIO powers to the processor
•Produces VAUD_3V3 supply, which is one of the
source power supplies for audio codec U25 and
which supplies power to headphone jack J34
•Produces SPDIF_VCC supply through jumper J21 for
S/PDIF interface
•Primary power source option for producing MCU_
DCDC_IN_3V3 supply
•Primary power source option for producing VDD_
HIGH_IN_3V3 supply
•Primary power source option for producing FLASH_
VCC supply, which is used by QSPI flash memory
and which provides NVCC_SD1 power to the
processor
•Alternative power source option for producing VDD_
SNVS_3V3 supply
•Supplies power to power regulator U26, user LED
D8, JTAG connector J2, mikroBUS socket connector
J62, and I2C3 extension connector J24
•Supplies power to DIP switches SW2, SW3, and
SW4
•Supplies power to three 2-channel, 2:1 mux/demux
switches U63, U64, and U65
•Input/output supply for CAN transceiver U23
•Optional 3.3 V supply for main audio connector J23
U26 UM1550
S-18 (Union
Semiconductor)
LDO_1V8 (1.8 V) •Alternative power source option for producing
FLASH_VCC supply
•Optional 1.8 V supply for main audio connector J23
Table 11. MIMXRT1040-EVK board power supplies...continued
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Power source Manufacturing
part number
Power supply rail Description
U1 UM1750
S-00 (Union
Semiconductor)
P3V3_SDA (3.3 V) •Supplies 3.3 V power to Freelink interface (LPC4322
JET100). It is also used to change the voltage level of
Freelink interface signals going to / coming from i.MX
RT1040 processor
•Supplies power to SWD/JTAG connector J15
Table 11. MIMXRT1040-EVK board power supplies...continued
2.3 Clocks
The MIMXRT1040-EVK board provides all the clocks required for the processor and
peripheral interfaces.
The following table summarizes the specifications of each clock and the component that
provides it.
Part
identifier
Clock generator Clock Specifications Destination
Y1 Crystal oscillator SUSCLK_32KHZ Frequency: 32.768
kHz
M.2 mini card connector, J8
Y2 Crystal oscillator XTAL1
XTAL2
Frequency: 12 MHz LPC4322JET100 (Freelink interface or
OpenSDA hardware)
Y3 Crystal oscillator XTALI
XTALO
Frequency: 24 MHz Target processor
Y4 Crystal oscillator RTC_XTALI
RTC_XTALO
Frequency: 32.768
kHz
Target processor
Table 12. MIMXRT1040-EVK board clocks
2.4 SDRAM memory
i.MX RT1040 includes Smart External Memory Controller (SEMC), which is a
multistandard memory controller optimized for both high-performance and low pin-count.
It can support multiple external memories in the same application with shared address
and data pins.
SEMC on i.MX RT1040 supports SDRAM interface for:
•Both 8-bit and 16-bit modes.
•Up to 512 MB per each chip select (CS) and up to 4x CS.
On the MIMXRT1040-EVK board, SEMC is connected to 256 Mbit SDRAM (U16),
operating at 3.3 V with maximum frequency 166 MHz.
SEMC_DQS is input/output when the processor writes data to the SDRAM, it outputs the
DQS in the center of the data it is writing. When reading data, the SDRAM sends the
DQS edge aligned with the data.
Note:
Users should leave the SEMC_DQS pin floating and enable internal loopback. This check
should be done to ensure that SDRAM performs read and write operations at 166 MHz;
otherwise, performance would not be optimal.
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2.5 SDHC
i.MX RT1040 supports one Ultra Secured Digital Host Controller (uSDHC) module for
SD/eMMC interface, uSDHC. The uSDHC interface provides the interface between the
host system and the SD/SDIO/MMC cards. The module acts as a bridge, passing host
bus transactions to the SD/SDIO/MMC cards by sending commands and performing data
accesses to/from the cards.
The MIMXRT1040-EVK board supports connections with the uSDHC1 interface of the
i.MX RT1040 processor through a micro-SDHC connector that accepts an external micro-
SD 3.0 card. The micro-SD card is one of the primary boot sources of the board.
The table below shows the pinout details of the micro-SDHC connector, J22.
Pin number SDHC signals Direction with respect to i.MX RT1040
1 SD1_D2 Bidirectional
2 SD1_D3 Bidirectional
3 SD1_CMD From i.MX RT1040
4 VSD_3V3 NA
5 SD1_CLK From i.MX RT1040
6 GND NA
7 SD1_D0 Bidirectional
8 SD1_D1 Bidirectional
9 SD_CD_SW To i.MX RT1040
Table 13. Micro-SDHC connector pinout
The SD_CD_SW signal of the micro-SDHC connector indicates presence/absence of card
in the connector slot. This signal goes to uSDHC1 controller through the GPIO_B1_12
pin of the controller.
For SD boot, the card detect signal (SD_CD_SW) from the SD card socket to the
processor must be low. The signal is low when an SD card is detected in the socket.
When no SD card is present or SD card is not detected in the socket, then the signal is
high.
For SD boot, SW4 [1:4] should be set to ONOFFONOFF, as explained in Table 10.
2.6 QSPI NOR flash memory
The MIMXRT1040-EVK board supports Flexible Serial Peripheral Interface (FlexSPI)
host controller connections with the i.MX RT1040 processor through QSPI NOR flash
memory.
The MIMXRT1040-EVK board supports QSPI as the primary system boot source. By
default, the QSPI NOR flash memory is enabled on the board. The table below describes
the QSPI NOR flash memory supported on the MIMXRT1040-EVK board.
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Part identifier Part number Description Boot settings
U24 W25Q64JVSSIQ
(Windbond Electronics)
•Type: On-board QSPI NOR flash
memory
•Density: 64 Mbit (8 MB)
•Operating voltage: 3.3 V (FLASH_VCC)
SW4 [1:4] = OFFOFFONOFF
Table 14. QSPI NOR flash memory
Note: For more details about i.MX RT1040 boot device settings, see Table 10.
2.7 Ethernet interface
The i.MX RT1040 processor supports two Ethernet MACs, which are connected to the
Reduced MII (RMII) interface. The RMII interface is connected to an external Ethernet
Physical Layer Transceiver (PHY) (U18). It also connects with an RJ45 connector
integrated with magnetics (J43) to provide copper-based Ethernet connection. The RJ45
connector is integrated with magnetic transformer, so that it can be directly connected to
PHY.
Ethernet port has a unique MAC address, which is fused into i.MX RT1040.
2.8 USB interface
The i.MX RT1040 processor supports one USB 2.0 On-The-Go (OTG) controller, capable
of operating at:
•Low-speed (LS) rate of 1.5 Mbit/s
•Full-speed (FS) rate of 12 Mbit/s
•High-speed (HS) rate of 480 Mbit/s
The USB OTG controller can operate in Host mode or Device (Peripheral) mode. On the
MIMXRT1040-EVK board, the USB OTG controller is connected to a USB 2.0 micro-AB
connector, J48.
2.9 Audio interface
This topic explains:
•Audio codec
•Audio connector
2.9.1 Audio codec
MIMXRT1040-EVK board includes a low-power, high-quality audio codec for encoding/
decoding audio data. The audio codec used on the board is Cirrus Logic WM8960 (U25),
which can support 24-bit I2S data and 48 kHz sampling rate.
The audio codec is connected to an audio jack (J34), for audio input/output. The
connector is a 3.5 mm audio-stereo headphone jack, which supports jack detect. The
audio interface also includes:
•One onboard MIC, P1
•HP MIC
•S/PDIF connectors, J7 and J14 [both DNP]
•Connectors for speakers, J39 and J38 [both DNP]
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