Fujitsu high-performance graphics system controller for automotive applications

Fujitsu

Fujitsu's high-performance graphics system controller product integrates the high-performance CPU core "FR81S", which is a single chip solution that integrates various functions such as color display and video input and instrument control. This series of products can be applied to automobile dashboards. In addition to the MB91590 series that supports color LCD display, Fujitsu also launched the MB91570 series that supports segment LCD display.

summary

The next-generation in-vehicle system will be applied to new control systems such as hybrid and electric vehicles. This requires each control unit to have higher efficiency and higher functional integration. It is foreseeable that the information display will also be upgraded accordingly. Therefore, these systems require high-performance system controllers in order to be able to respond to information from various peripheral components in real time, and use a rich graphical interface to display information. In addition, the market's demand for displaying video information is expected to grow, and vehicle photography opportunities are widely used to improve driving safety.

This time, Fujitsu launched six "MB91590 series" system chips for in-vehicle applications, supporting automotive dashboards (instrument panels) and in-vehicle HMI systems, integrating color display, video input and instrument control into a single chip. This series of products integrates a world-class high-performance CPU core "FR81S", a unique Sprite graphics display controller (GDC), graphics display memory (VRAM), and video capture for external input images in a single chip. And communication functions such as CAN and LIN. Since the conventional system is composed of a graphics display controller, an MCU for control, and external graphics display memory, the new product series reduces the cost and chip package size by reducing peripheral circuits compared to the conventional system. In addition, since the number of externally connected buses for noise generation sources is reduced and noise removal components are reduced, the system can achieve high performance at a lower cost.

Figure 1 shows an example of system architecture.

To ensure that R & D personnel can successfully use these products in design, Fujitsu provides development environment kits, including the latest one-line on-chip debugger (simulator) and the comprehensive development environment SOFTUNEV6. In addition, Fujitsu also provides StarterKit and sample programs, graphic design tools and graphic libraries, etc., to facilitate designers who do not have the relevant knowledge of the GDC embedded in the product to visually test the display design.

Table 1 shows the main development tools, and Figure 2 shows an example of the development environment.

Features

Equipped with high-performance new 32-bit CPU core "FR81S"

The CPU core FR81S used in this product runs at a maximum internal operating frequency of 128MHz. The CAN embedded microcontroller of this product can provide world-class high-speed processing functions. In addition, this product also includes a single-precision floating-point unit for filtering and high-speed image processing, and a memory protection unit to prevent external intrusion into the storage area.

Built-in NOR new flash memory architecture

The new product has a built-in NOR-type new flash architecture (NewFlasharchitecture), through the use of NOR-type flash memory high-speed and low power consumption mode, to achieve high-speed reading of the program, thereby improving the MCU processing capacity.

2D graphics rendering engine integrated inside the graphics display controller

In addition to advanced Sprite technology, including automatic flicker, movement, dynamic images, and anti-aliasing, this series of products also integrates many display functions for car dashboards, including internal video memory, line drawing, and area replication. In addition, the video capture function can receive video signals in digital YUB / RGB format, and a built-in NTSC decoder to process analog video content. It can zoom the captured image and perform 90 degree rotation. Because it can expand and display images encoded with string length, it can process video data with less memory capacity.

The product video display function has the following characteristics.

Sprite technology

The product is equipped with a Sprite engine, which can display up to 512 512 & TImes; 512 Sprite graphics.

In the conceptual diagram shown in FIG. 3, each Sprite can be displayed in a prioritized manner.

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IP waterproof rating range
The waterproof test includes the second characteristic number from 1 to 8, that is, the protection class code is IPX1 to IPX8.
No protection No special protection
1 Prevent dripping water from invading Prevent vertical dripping water droplets
2 Water dripping is still prevented when tilted 15 degrees Water dripping is still prevented when electrical equipment is tilted 15 degrees
3 Prevent the intrusion of water jets Prevent rainwater, or water jetted from the vertical angle of less than 50 degrees
4 Prevent the intrusion of splashing water Prevent the intrusion of splashing water from all directions
5 Prevent the intrusion of water from large waves
6 Prevent the water intrusion of large waves Electrical equipment intrusion into the water can still ensure the normal operation of the equipment under certain conditions of time or water pressure
7 Prevent the intrusion of water intrusion Electrical equipment can still ensure the normal operation of the equipment under the condition of certain water pressure under the condition of submerged water indefinitely
8 Prevent the effects of sinking

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