STM32U5A5QJ datasheet(57/382 Pages) STMICROELECTRONICS

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DS13543 Rev 1

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STM32U5Axxx

Functional overview

3.19

Neo-Chrom GPU (GPU2D)

The Neo-Chrom GPU is accelerating operations for graphic effects like rotation, scaling, and

perspective correct texture mapping (2.5D). It works together with an optimized software

stack designed for state of the art graphic rendering.

The GPU2D main features are:

•

Multi-threaded fragment (pixel) processing core with a VLIW (very-long instruction

word) instruction set

•

Fixed point functional units

•

Command list based DMAs to minimize CPU overhead

•

Two 32-bit AHB master interfaces for texture, command list and framebuffer access

•

32-bit AHB slave interface for register bank access

•

Up to 4 general-purpose flags for system-level synchronization

•

Texture decompression unit with TSC™4 and TSC™6/TSC™6a support

The GPU2D also features:

•

2D drawing

–

Pixel/line drawing

–

Filled rectangles

–

Triangles, quadrilateral drawing

–

Anti-aliasing 8xMSAA (multi-sample anti-aliasing)

•

Image transformations

–

3D perspective correct projections

–

Texture mapping with bilinear filtering or point sampling

•

Blit support

–

Rotation, mirroring, stretching (independently on x and y axis)

–

Source and/or destination color keying

–

Pixel format conversions

Table 13.LPDMA1 channels implementation and usage

Channel

Hardware parameters

Features

dma_fifo_

size[x]

dma_

addressing[x]

x = 0 to 3

Channel x (x = 0 to 3) is implemented with:

– no FIFO. Only a single source transfer cell is

internally registered.

– fixed/contiguously incremented addressing

Table 14. LPDMA1 autonomous mode and wake-up in low-power modes

Feature

Low-power modes

Autonomous mode and wake-up

LPDMA1 in Sleep, Stop 0, Stop 1 and Stop 2 modes

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