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NXP Semiconductors MCIMX31CJMN4CR2
- Part No.:
- MCIMX31CJMN4CR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Microprocessors
- Package:
- 473-LFBGA
- Datasheet:
-
MCIMX31CJMN4CR2.pdf
- Description:
- IC MPU I.MX31 400MHZ 473LFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,849
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Product details
Overview
MCIMX31CJMN4CR2 from NXP Semiconductors (formerly Freescale) is an ARM1136JF-S™-based multimedia applications processor targeting automotive infotainment and industrial human-interface systems. It operates at 400 MHz, integrates 128 KB L2 cache, 16 KB instruction and data L1 caches, 32 KB ROM, and 16 KB SRAM, and supports DDR, NAND Flash, USB 2.0 OTG, SDHC, and MPEG-4 hardware encoding up to VGA@30 fps.
For engineers reviewing the MCIMX31CJMN4CR2 datasheet, MCIMX31CJMN4CR2 pinout, MCIMX31CJMN4CR2 application, or MCIMX31CJMN4CR2 equivalent, key selection criteria include its –40°C to +85°C operating range, MAPBGA-473 19×19 mm 0.8 mm pitch package, dual-Vt 90 nm process, DVFS power management, and integrated Image Processing Unit (IPU) for camera interface and display processing.
Technical Context
The MCIMX31CJMN4CR2 implements the ARM v6 architecture with Jazelle® Java acceleration, SIMD DSP extensions, and an eight-stage pipeline with branch prediction. Its memory subsystem includes unified L2 cache, on-chip ROM patching capability, and configurable boot sources including USB HS and SD/MMC-enabled in silicon revision 2.0.1.
Power management relies on dynamic voltage and frequency scaling (DVFS), independent clock and power domain gating, and state retention mode with 0.95 V core supply. The device integrates dedicated accelerators: MPEG-4 encoder, Vector Floating Point (VFP11) co-processor, Autonomous IPU for on-the-fly video processing, and Smart DMA (SDMA) for offloading bulk transfers from the ARM core.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | ARM1136JF-S™, ARM v6, 8-stage pipeline with Jazelle® and SIMD support - enables real-time Java bytecode execution and efficient signal processing. |
| Clock Speed | 400 MHz maximum - delivers high throughput for multimedia decoding, graphics rendering, and industrial control tasks. |
| Memory Subsystem | 16 KB I-Cache + 16 KB D-Cache + 128 KB L2 cache + 32 KB ROM + 16 KB SRAM - reduces external memory bandwidth demand and supports low-power audio streaming. |
| Multimedia Acceleration | MPEG-4 encoder (VGA@30 fps), IPU with rotation/inversion/blending, VFP11 co-processor - enables hardware-accelerated video encode, camera preprocessing, and 3D graphics math. |
| Interface Support | USB 2.0 OTG (HS/FS/LS), dual SDHC/SDIO, ATA, 3×CSPI, 3×I²C, 5×UART, FIR, 1-Wire, PCMCIA/CF - provides flexible connectivity for storage, sensors, displays, and peripherals. |
| Operating Temperature | –40°C to +85°C - qualified for automotive infotainment head units and industrial HMI panels without derating. |
| Supply Voltages | Core: 1.22–1.47 V (QVCC/QVCC1/QVCC4); I/O: 1.75–3.1 V (NVCCx); PLL: 1.3–1.47 V (FVCC/MVCC/SVCC/UVCC) - requires multi-rail power sequencing per datasheet Section 4.2. |
Pinout & Package
MCIMX31CJMN4CR2 is housed in a RoHS-compliant, lead-free MAPBGA-473 package (Case 1931), 19 mm × 19 mm, 0.8 mm pitch, MSL Level 3. Pin assignments follow the documented ball map in Section 5 ("Package Information and Pinout") of the MCIMX31C Technical Data Rev. 4.3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CKIH / CKIL | Primary/Secondary Clock Inputs | CKIH (15–75 MHz) drives main PLLs; CKIL (32.768 kHz) clocks RTC/WDOG/reset sync - dual-clock domain enables precise timing and low-power wake-up. |
| GPIO1_5 | Power Ready Input | Dedicated input tied to PMIC power-good signal - used by internal power management logic to gate domain enable sequences; not configurable as GPIO. |
| GPIO1_6 | Tamper Detect Input | Security-critical input that triggers irreversible security violation when asserted - enabled via GPR[16]; remains active until next reset. |
| CLKSS | Clock Source Select | Strap pin selecting CKIH or CKIL as default DPLL reference - determines boot-time clock tree initialization before CCMR register reconfiguration. |
| SJC_MOD | Secure JTAG Mode Control | Must be externally pulled to GND - enables secure debug access and disables standard JTAG if tamper or security policies are violated. |
Key Features
| Feature | Design Value |
|---|---|
| MPEG-4 Hardware Encoder | Real-time VGA@30 fps encode - eliminates ARM CPU load for video capture, enabling concurrent UI rendering and system responsiveness. |
| Autonomous Image Processing Unit (IPU) | On-the-fly rotation, blending, color-space conversion, and viewfinder generation - bypasses memory and CPU, reducing latency and power in camera-based HMIs. |
| Vector Floating Point (VFP11) Co-processor | Hardware-accelerated 32-bit floating-point operations - improves performance of 3D graphics, audio effects, and industrial control algorithms without software emulation overhead. |
| Smart DMA (SDMA) Controller | Offloads memory-to-peripheral and memory-to-memory transfers - frees ARM11 core for application logic while maintaining high throughput for LCD, audio, and sensor interfaces. |
| Dual-Vt 90 nm Process + DVFS | Optimized leakage vs. performance trade-off with dynamic voltage/frequency scaling - achieves <1 mW/MHz typical active power in industrial temperature range. |
Applications
| Automotive Infotainment Head Unit | Industrial HMI Panel |
|---|---|
|
Use Scenario: Integrated navigation, media playback, Bluetooth hands-free, and rear-view camera display in vehicle dashboards. IC Role / Device Role / Timing Role: Primary application processor executing Linux/QNX OS, driving dual-display outputs, managing USB/SD card media, and running MPEG-4 encode for camera feed. Use Value: Hardware IPU and MPEG-4 encoder reduce system BOM cost by eliminating external video processors; –40°C to +85°C rating ensures reliability across vehicle thermal zones. |
Use Scenario: Operator interface for PLC-controlled machinery, featuring touch GUI, real-time diagnostics, and multi-sensor data visualization. IC Role / Device Role / Timing Role: Central controller interfacing with CAN/Ethernet, driving resistive/capacitive touch LCD, capturing analog/digital I/O, and logging data to NAND flash. Use Value: Integrated SDMA and multiple UARTs/CSPI/I²C simplify peripheral integration; 16 KB SRAM enables deterministic audio feedback without external DRAM access. |
| Portable Medical Imaging Terminal | Ruggedized Field Data Collector |
|
Use Scenario: Handheld ultrasound or dermatology imaging device requiring real-time image enhancement and local DICOM export. IC Role / Device Role / Timing Role: Image acquisition processor using parallel camera interface, applying IPU-based noise reduction and contrast adjustment, then compressing via MPEG-4 before storage/transmission. Use Value: Autonomous IPU performs pixel-level processing without ARM intervention, preserving battery life; USB OTG enables direct DICOM transfer to PACS workstations. |
Use Scenario: Outdoor asset inspection tool with GPS, barcode scanner, thermal camera, and wireless telemetry in oil/gas or utility infrastructure. IC Role / Device Role / Timing Role: Rugged application host running RTOS, synchronizing GPS timestamps with image/video capture, managing SDHC logging, and supporting field-upgradable firmware via SD card. Use Value: Dual SDHC controllers allow simultaneous recording and firmware update; tamper-detect GPIO1_6 supports physical security compliance for critical infrastructure deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multimedia applications processor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| i.MX357 CEJN4C | ARM Cortex-A8 @ 532 MHz, larger L2 cache (256 KB), integrated OpenGL ES 1.1 GPU, no MPEG-4 encoder - higher performance but no hardware video encode acceleration. | Targets richer GUIs and 3D visualization; lacks real-time VGA encode capability required for camera-based HMIs. | Select i.MX357 CEJN4C when GPU-accelerated UI and higher CPU throughput outweigh need for on-chip MPEG-4 encode. |
| i.MX27 MCIMX27CJM4B | ARM926EJ-S @ 400 MHz, no VFP, no L2 cache, MPEG-4 decode-only (no encode), smaller peripheral set - lower integration and older architecture. | Suitable for legacy audio/video playback and basic HMI; cannot support real-time camera encode or complex floating-point workloads. | Select i.MX27 MCIMX27CJM4B only for cost-sensitive, non-camera, non-3D applications where software MPEG-4 encode is acceptable. |
Compared with i.MX357 CEJN4C and i.MX27 MCIMX27CJM4B, MCIMX31CJMN4CR2 uniquely balances ARM11 performance, hardware MPEG-4 encode, autonomous IPU, and industrial temperature support - making it optimal for camera-integrated embedded systems where encode latency and power efficiency are critical.
Availability
MCIMX31CJMN4CR2 is available at Aetrix Electronics and suitable for automotive infotainment head units, industrial HMI panels, portable medical imaging terminals, and ruggedized field data collectors requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MCIMX31CJMN4CR2 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors (formerly Freescale Semiconductor) is a global semiconductor company specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with leadership in MCU, RF, and edge processing technologies.
The i.MX31 family, including MCIMX31CJMN4CR2, was designed specifically for high-performance, low-power multimedia processing in automotive and industrial environments - emphasizing real-time video encode, robust security, and extended temperature operation.
FAQ
What is the silicon revision of MCIMX31CJMN4CR2 and why does it matter?
The MCIMX31CJMN4CR2 is silicon revision 2.0.1, which includes an updated iROM enabling boot from USB High-Speed and SD/MMC - a critical enhancement over revision 2.0 for field-upgradable systems. This revision also resolves errata ENGcm02610 related to USB HS data integrity under specific voltage conditions, ensuring reliable high-speed peripheral operation in production designs.
Does MCIMX31CJMN4CR2 include a graphics processing unit (GPU)?
Yes, MCIMX31CJMN4CR2 includes a dedicated Graphics Processing Unit (GPU) for hardware acceleration of 2D and 3D graphics algorithms. This GPU is explicitly present in the MCIMX31C variant (unlike the MCIMX31LC, which omits it), and is documented in the block diagram and Module Inventory (Table 3) of the MCIMX31C Technical Data Rev. 4.3.
What are the power supply sequencing requirements for MCIMX31CJMN4CR2?
MCIMX31CJMN4CR2 requires strict power-up/down sequencing per Section 4.2 of the datasheet: QVCC/QVCC1/QVCC4 must ramp monotonically before NVCC supplies; FVCC/MVCC/SVCC/UVCC (PLL rails) must be stable before core clocks activate; and GPIO1_5 (power ready) must assert after all supplies settle. Violating this sequence risks boot failure or latent instability in clock domains.
Can MCIMX31CJMN4CR2 support dual-display output?
Yes, MCIMX31CJMN4CR2 supports dual-display output via its integrated Display/TV Control module and two independent LCD interfaces - one for primary panel (e.g., main dashboard display) and one for secondary output (e.g., rear-seat entertainment or camera preview). This capability is confirmed in the block diagram (Figure 1) and functional description of the Display/TV Ctl block in Section 2.2.
Is MCIMX31CJMN4CR2 pin-compatible with other i.MX31 variants like MCIMX31LCJMN4D?
No, MCIMX31CJMN4CR2 is not pin-compatible with MCIMX31LCJMN4D. While both use the same MAPBGA-473 package, the MCIMX31LC variant disables GPU-related signals and reassigns certain balls for alternate functions - confirmed by differences in signal multiplexing tables and module inventory (GPU is absent in MCIMX31LC). PCB layout must match the exact variant's pinout.
MCIMX31CJMN4CR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 473-LFBGA
- Series:
- i.MX31
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Core Processor:
- ARM1136JF-S
- Number of Cores/Bus Width:
- 1 Core, 32-Bit
- Speed:
- 400MHz
- Co-Processors/DSP:
- Multimedia; GPU, IPU, MPEG-4, VFP
- RAM Controllers:
- DDR
- Graphics Acceleration:
- Yes
- Display & Interface Controllers:
- Keyboard, Keypad, LCD
- Ethernet:
- -
- SATA:
- -
- USB:
- USB 2.0 (3)
- Voltage - I/O:
- 1.8V, 2.0V, 2.5V, 2.7V, 3.0V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Security Features:
- Random Number Generator, RTIC, Secure Fusebox, Secure JTAG, Secure Memory
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 473-LFBGA (19x19)
- Additional Interfaces:
- 1-Wire, AC97, ATA, FIR, I2C, I2S, MMC/SD/SDIO, MSHC, PCMCIA, SDHC, SIM, SPI, SSI, UART
MCIMX31CJMN4CR2 FAQ
1.How can I place an order for MCIMX31CJMN4CR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MCIMX31CJMN4CR2 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MCIMX31CJMN4CR2 reliable?
The price and inventory of MCIMX31CJMN4CR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCIMX31CJMN4CR2 is usually 5 days.
3.What payment methods are accepted for MCIMX31CJMN4CR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCIMX31CJMN4CR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCIMX31CJMN4CR2?
MCIMX31CJMN4CR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCIMX31CJMN4CR2 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MCIMX31CJMN4CR2?
For technical support, including MCIMX31CJMN4CR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCIMX31CJMN4CR2 requirements.
6.How does Aetrix verify that MCIMX31CJMN4CR2 is sourced from the original manufacturer or authorized distributors?
All MCIMX31CJMN4CR2 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MCIMX31CJMN4CR2 meets industry standards.
7.What is the process for return or replacement of MCIMX31CJMN4CR2?
All MCIMX31CJMN4CR2 units undergo pre-shipment inspection (PSI). If there is an issue with MCIMX31CJMN4CR2, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MCIMX31CJMN4CR2 part is unused and in its original packaging.
Return procedure for MCIMX31CJMN4CR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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