MB87P2020 Datasheet, PDF (15/356 Pages) Fujitsu Component Limited. – Colour LCD/CRT/TV Controller

1 Overview
Graphic Controller Overview
1.1 Application overview
The MB87J2120 "Lavender" and MB87P2020-A “Jasmine” are colour LCD/CRT graphic display control-
lers (GDCs)¹ interfacing to MB91xxxx micro controller family and support a wide range of display devices.
The architecture is designed to meet the low cost, low power requirements in embedded and especially in
automotive² applications.
Lavender and Jasmine support almost all LCD panel types and CRTs or other progressive scanned³ moni-
tors/displays which can be connected via the digital or analog RGB output. Products requiring video/camera
input can take advantage of the supported digital video interface. The graphic instruction set is optimized
for minimal traffic at the MCU interface because it’s the most important performance issue of co-processing
graphic acceleration systems. Lavender uses external connected SDRAM, Jasmine is a compatible GDC
version with integrated SDRAM (1MByte) and comes with additional features.
Lavender and Jasmine support a set of 2D drawing functions with built in Pixel Processor, a video scaler
interface, units for physical and direct video memory access and a powerful video output stream formatter
for the greatest variety of connectable displays.
Figure 1-1 displays an application block diagram in order to show the connection possibilities of Jasmine.
For Lavender external SDRAM connection is required in addition.
1.2 Jasmine/Lavender Block Diagram
Figure 1-2 shows all main components of Jasmine/Lavender graphic controllers. The User Logic Bus con-
troller (ULB), Clock Unit (CU) and Serial Peripheral Bus (SPB) are connected to the User Logic Bus inter-
face of 32 bit Fujitsu RISC microprocessors. 32 and 16 bit access modes are supported.
Table 1-1: GDC components
Shortcut
CCFL
CU
DAC
DPA (part of DIPA)
GPU
DFU (part of GPU)
CCU (part of GPU)
Meaning
Cold Cathode Fluorescence
Lamp
Clock Unit
Digital Analog Converter
Direct Physical memory Access
Graphics Processing Unit
Data Fetch Unit
Colour Conversion Unit
Main Function
Cold cathode driver for display backlight
Clock gearing and supply, Power save
Digital to analog conversion for analog
display
Memory mapped SDRAM access with
address decoding
Frame buffer reader which converts to
video data format required by display
Graphic/video data acquisition
Colour format conversion to common
intermediate overlay format
1. The general term ’graphic display controller’ or its abbreviation ’GDC’ is used in this manual to identify both
devices. Mainly this is used to emphasize its common features.
2. Both display controllers have an enhanced temperature range of -40 to 85 ^oC.
3. TV conform output (interlaced) is also possible with half the vertical resolution (line doubling).
Overview
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