- Forums
- Product Forums
- General Purpose MicrocontrollersGeneral Purpose Microcontrollers
- i.MX Forumsi.MX Forums
- QorIQ Processing PlatformsQorIQ Processing Platforms
- Identification and SecurityIdentification and Security
- Power ManagementPower Management
- Wireless ConnectivityWireless Connectivity
- RFID / NFCRFID / NFC
- Advanced AnalogAdvanced Analog
- Neural Processing UnitsNeural Processing Units
- MCX Microcontrollers
- S32G
- S32K
- S32V
- MPC5xxx
- Other NXP Products
- S12 / MagniV Microcontrollers
- Powertrain and Electrification Analog Drivers
- Sensors
- Vybrid Processors
- Digital Signal Controllers
- 8-bit Microcontrollers
- ColdFire/68K Microcontrollers and Processors
- PowerQUICC Processors
- OSBDM and TBDML
- S32M
- S32Z/E
-
- Solution Forums
- Software Forums
- MCUXpresso Software and ToolsMCUXpresso Software and Tools
- CodeWarriorCodeWarrior
- MQX Software SolutionsMQX Software Solutions
- Model-Based Design Toolbox (MBDT)Model-Based Design Toolbox (MBDT)
- FreeMASTER
- eIQ Machine Learning Software
- Embedded Software and Tools Clinic
- S32 SDK
- S32 Design Studio
- GUI Guider
- Zephyr Project
- Voice Technology
- Application Software Packs
- Secure Provisioning SDK (SPSDK)
- Processor Expert Software
- Generative AI & LLMs
-
- Topics
- Mobile Robotics - Drones and RoversMobile Robotics - Drones and Rovers
- NXP Training ContentNXP Training Content
- University ProgramsUniversity Programs
- Rapid IoT
- NXP Designs
- SafeAssure-Community
- OSS Security & Maintenance
- Using Our Community
-
- Cloud Lab Forums
-
- Knowledge Bases
- ARM Microcontrollers
- i.MX Processors
- Identification and Security
- Model-Based Design Toolbox (MBDT)
- QorIQ Processing Platforms
- S32 Automotive Processing Platform
- Wireless Connectivity
- CodeWarrior
- MCUXpresso Suite of Software and Tools
- MQX Software Solutions
- RFID / NFC
- Advanced Analog
- Neural Processing Units
-
- NXP Tech Blogs
- Home
- :
- Translated Content
- :
- Multi Source Translation Content
- :
- 2413117_en-US
2413117_en-US
- Subscribe to RSS Feed
- Mark as New
- Mark as Read
- Bookmark
- Subscribe
- Printer Friendly Page
- Report Inappropriate Content
2413117_en-US
2413117_en-US
Using the S32K396-BGGA-DC1 dev board, I'm trying to use the 16MHz External Oscillator (Y2) for clocking.
I'm running into issues when I set the SELCTL of the MC_CGM Mux 0 CSC to PLL then set CLK_SW = 1. I get a debug error (Trace32) and the code running crashes. I did attempt to run without a debugger connected, with one of the user LEDs to turn on after it gets past setting CLK_SW = 1. The LED never turns on so I am at the assumption the micro gets hung up in the same spot.
Here is the psuedo code of my clocking configuration:
PLLCR.PLLPD = 1
Set PLLDV.MFI, PLLDV.RDIV, PLLDV.ODIV2, and PLLODIV[0].DIV
PLLCR.PLLPD = 0
Confirm PLLSR.LOCK = true (while loop)
PLLODIV[0].DE = 1
Configure flash wait times to 160MHz and RAM // Based on A+ Mode config
MUX[0].DIV_TRIG_CTRL.TCTL = 1
MUX[0].DIV_TRIG_CTRL.HHEN = 1
Configure MUX[0].DC[0 - 7] with respective clk divider values
MUX[0].DIV_TRIG = 1
Wait until DIV_STAT = 0
MUX[0].CSC.SELCTL = 0x8 (PLL_PHI0_CLK)
MUX[0].CSC.CLK_SW = 1 << Crashes here on attempt to write to 1
Am I missing something in my procedure? I made sure to be below limits of the individual dividers, so I do not think that is the issue. Thanks ahead of time for any guidance on this!
Found the issue, was needing to set SAFE_SW = 1 before setting SELCTL.