PCF2131 datasheet(3/34 Pages) NXP

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NXP Semiconductors

UM12262

FRDM-IMX91 Board User Manual

Board feature

Target processor feature

used

Description

Applications processor

The i.MX 91 applications processor features a single Arm Cortex-

A55 core speeding up to 1.4 GHz.

Note: For more detail on the i.MX 91 processor, see the i.MX 91

Applications Processor Reference Manual.

USB interface

USB2.0 high-speed host

and device controller

• x1 USB 2.0 Type C connector

• x1 USB 2.0 Type A connector

DRAM memory

DRAM controller and PHY 1 GB LPDDR4 (Nanya NT6AN512M16AV-J1)

Mass storage

uSDHC

• 8 GB eMMC5.1 (FEMDRM008G-58A39)

• MicroSD card connector (SD3.0 supported)

Boot configuration

• Default boot mode is single boot from the eMMC device

• Board also supports SD card boot

Display interface

Parallel display

Parallel display support

Ethernet interface

Two ENET controllers

• 10/100/1000 Mbit/s RGMII Ethernet with one RJ45 connector (P3)

supporting TSN and connected with external PHY, YT8521

• 10/100/1000 Mbit/s RGMII Ethernet with one RJ45 connector (P4)

connected with external PHY, YT8521

I/O expanders

CAN, I2C/I3C, analog-to-

digital converter (ADC)

One 10-pin 2x5 2.54 mm connector P12 provides:

• One high-speed CAN transceiver TJA1051GT/3 connection

• 3-pin header for I2C/I3C expansion

• Two-channel ADC support

Tri-radio module

SDIO, UART, SPI, SAI

U-blox MAYA-W476-00B module supporting Wi-Fi 6, Bluetooth Low

Energy 5.4, and 802.15.4

M.2 interface

USB, SDIO, SAI, UART,

I2C, and GPIO

One M.2/NGFF Key E mini card 75-pin connector, P8, supporting

USB, SDIO, SAI, UART, I2C, and Vendor-defined SPI interfaces

Note: By default, these signals are connected with the onboard

tri-radio module, however, to use this M.2 slot, you must rework

resistors (see Table 15 ).

Audio

MQS

MQS support

Debug interface

• USB2.0 Type-C connector (P16) with USB-to-UART device,

CH342F. CH342F provides two COM ports:

– First COM port is used for Cortex A55 system debug

– Second COM port is reserved

• Serial wire debug (SWD), P14

EXPI

One 2x20-pin EXPI for I2S, UART, I2C, and GPIO expansion

Power

• One USB 2.0 Type-C connector for power delivery only

• PCA9451AHNYPMIC

• Discrete DCDC/LDO

PCB

FRDM-IMX91: 105 mm × 65 mm, 10-layer

Orderable part number

FRDM-IMX91

Table 1. FRDM-IMX91 features

1.3 Board kit contents

Table 2 lists the items included in the FRDM-IMX91 board kit.

UM12262

All information provided in this document is subject to legal disclaimers.

User manual

Rev. 3.0 — 22 April 2025

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