LCD Display Controller

Figure 3-3. Passive Monochrome Dual Panel Displays Typical Connection

PXA250 Processor

L_DD0 - Top left for upper panel

DU_0

L_DD1

DU_1

L_DD2

DU_2

L_DD3

DU_3

L_PCLK

Pixel_Clock

L_LCLK

Line_Clock

L_FCLK

Frame_Clock

L_BIAS

Bias

L_DD4 - Top left for lower panel

DL_0

 

L_DD5

DL_1

 

L_DD6

DL_2

L_DD7

DL_3

 

 

 

 

Upper Panel

LCD Display

Lower Panel

3.2.1.4Passive Color Single Panel Displays

Figure 3-4is a typical single-panel-color passive display connection.

Figure 3-4. Passive Color Single Panel Displays Typical Connection

 

 

L_DD0

D0

 

 

 

 

 

 

 

 

L_DD1

D1

 

 

 

 

L_DD2

D2

 

 

 

 

L_DD3

D3

 

 

 

 

L_DD4

D4

 

 

 

PXA250 Processor

L_DD5 - Top left Blue

D5

LCD Display

 

 

L_DD6 - Top left Green

D6

 

 

 

L_DD7 - Top left Red

D7

 

 

 

 

L_PCLK

Pixel_Clock

 

 

 

 

L_LCLK

Line_Clock

 

 

 

 

L_FCLK

Frame_Clock

 

 

 

 

L_BIAS

Bias

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.2.1.5Passive Color Dual Panel Displays

Figure 3-5is a typical dual-panel-color passive display connection.

3-4

PXA250 and PXA210 Applications Processor Design Guide

Page 48
Image 48
Intel PXA250 and PXA210 manual Passive Color Single Panel Displays

PXA250 and PXA210 specifications

The Intel PXA250 and PXA210 processors, part of the Intel XScale architecture, were introduced in the early 2000s, targeting mobile and embedded applications. They are known for their low power consumption, high performance, and advanced multimedia capabilities, making them suitable for a wide range of devices, including PDAs, smartphones, and other portable computing devices.

The PXA250, which operates at clock speeds ranging from 400 MHz to 624 MHz, features a superscalar architecture that allows it to issue multiple instructions per clock cycle. This enhances the overall performance for demanding applications while maintaining low power usage. It supports a variety of peripheral interfaces, including USB, Ethernet, and various memory types, which contributes to its versatility in different product designs.

One of the key technologies in the PXA250 is the integrated Intel Smart Repeat Technology, which optimizes data processing, thereby reducing the amount of power consumed during operation. This feature is particularly important for battery-powered devices, as it extends the overall battery life, allowing for longer usage times in mobile environments. Additionally, the PXA250 includes a dedicated graphics acceleration unit, which enables enhanced graphics and multimedia performance suited to modern applications at the time.

In contrast, the PXA210 is a more entry-level processor, aimed at cost-sensitive applications. Operating at lower clock speeds, typically around 200 MHz to 400 MHz, it forgoes some of the advanced performance features of the PXA250 while still offering a good balance of performance and power efficiency. The PXA210 is less complex, making it suitable for simpler devices that do not require the extensive capabilities of the PXA250.

Both processors utilize the Intel XScale architecture, which is based on the ARM instruction set. They are built on a 0.13-micron process technology, enabling higher density and lower power consumption compared to their predecessors. With integrated memory controllers and bus interfaces, they facilitate efficient data handling and connectivity options.

In summary, both the Intel PXA250 and PXA210 processors played a crucial role in the evolution of mobile computing by providing powerful processing capabilities with energy efficiency. Their features and technologies enabled device manufacturers to create innovative products that catered to the growing demand for portable devices during that era.