NXP Semiconductors S32G2 User Manual

S32G2 Vehicle Network Processor - Clock
Configuration Guide
by: NXP Semiconductors
1. Introduction
NXP’s S32G2 is a family of high-performance
vehicle network processors that combines Controller
Area Network (CAN), Local Interconnect Network
(LIN), and FlexRay networking with high-data-rate
Ethernet networking. It also combines a functional
safe-core infrastructure with MPU cores and includes
high-level security features.
S32G2 supports multiple clock sources for clock
generation:
• Fast Internal RC Oscillator (FIRC) (48 MHz)
• Slow Internal RC Oscillator (SIRC) (32 KHz)
• Fast External Crystal Oscillator (FXOSC) (20
– 40 MHz)
• Phase-Locked Loops (PLLs)
• Digital Frequency Synthesizer (DFS) modules
This application note is intended to provide the user
values for commonly used PLL/DFS configurations.
This document is accompanied with an attached clock
configurator - S32G2_Clock_Configurator.xlsx. The
calculator simplifies the clock configuration process
by helping user find the recommended and validated
values of PLL parameters (MFI, MFN and DIV), DFS
parameters (MFI and MFN), MC_CGM parameters
NXP Semiconductors
Document Number: AN13354
Application Notes
Rev. 1
,
11/2021
Contents
1. Introduction .................................................................... 1
2. PLL ................................................................................ 2
3. DFS ................................................................................ 4
4. Clock calculator design ................................................... 6
4.1 Options tab ........................................................... 6
4.2 Configuration tab.................................................. 7
4.3 Spread spectrum tab.............................................. 8
4.4 Clock calculator key considerations....................... 9
5. Spread Spectrum ........................................................... 10
5.1 Frequency modulation programming ................... 10
5.2 Spread Spectrum Considerations ......................... 11
5.3 Example code ..................................................... 12
6 Clock Configuration using S32DS Clocks Tool .............. 13
7 References .................................................................... 15

NXP Semiconductors S32G2 Specifications

General

Brand	NXP Semiconductors
Model	S32G2
Category	Computer Hardware
Language	English