topic architecture and register level code in S32K

architecture and register level code

piyush1 — Thu, 17 Jul 2025 12:14:57 GMT

embedded_wizard_0-1752754314674.png

i want this kind of architecture diagram of NXP s32k311 so that i can get to know how things work and i want to do register level bare metal codes for every peripherals and modules....please help me out

Re: architecture and register level code

VaneB — Thu, 17 Jul 2025 17:18:43 GMT

Hi @piyush1

We do not have an identical diagram available; however, we provide a simplified block diagram of the devices. Please refer to Figure 5 of the S32K3xx Reference Manual, Rev. 10.

To gain a deeper understanding of how each feature of the S32K3 family operates, we recommend reviewing the S32K3xx Reference Manual, where all functionalities are explained in detail. Additionally, there are training presentations and application notes available that may be helpful. These resources can be found in the Documentation section of the S32K3 product page(S32K3 Microcontrollers for Automotive General Purpose).

Please note that the only SDK currently available for S32K3 devices is the Real-Time Drivers (RTD), which can be obtained from S32K3xx Standard Software.

BR, VaneB

Re: architecture and register level code

piyush1 — Fri, 18 Jul 2025 03:54:30 GMT

embedded_wizard_0-1752810659382.png

ok i got the diagram from reference manual now explain me in detailes about this architecture so that i can understand everything and i can configure clock controle setting, peripherlas, buses, memory adresses and register level programing

Re: architecture and register level code

VaneB — Fri, 18 Jul 2025 18:23:38 GMT

Hi @piyush1

The microcontroller platform is based on a single-core ARM Cortex-M7 running at up to 120 MHz, and includes key features such as:

NVIC – Nested Vectored Interrupt Controller
FPU – Floating Point Unit
MPU – Memory Protection Unit
DSP – Digital Signal Processing capabilities
Cache and TCM

Memory configuration includes:

1 MB PFlash with ECC (Error Correction Code)
64 KB DFlash with ECC
128 KB RAM with ECC

Bus architecture is color-coded for clarity:

AHB (Advanced High-performance Bus): Green and Light Blue
APB (Advanced Peripheral Bus): Dark Blue
AIPS (AHB-to-Peripheral Bridge): Red and Brown – bridges AHB to peripheral modules
AXBS (Advanced Crossbar Switch): Primary interconnect, managing communication between bus masters and slave ports, and handling arbitration when multiple masters access the same slave.

Security is handled by the HSE-B (Hardware Security Engine – Type B). Provides cryptographic services and secure boot capabilities.

Regarding integration:

On-platform components are tightly coupled with the core (e.g., AXBS, eDMA control/status, XRDC).
Off-platform components are typically peripheral modules (e.g., ADCs, communication interfaces) that are not directly tied to the core.

Additional reference diagram, refer to Figure 2 of the S32K3xx Data Sheet, Rev. 11.