P0071 Terasic Technologies Inc, P0071 Datasheet - Page 36

• Manufacturer Part Number: P0071
• Description: TPAD MULTIMEDIADEVELOPMENT KIT
• Manufacturer: Terasic Technologies Inc
• Series: tPAD, Cyclone®IVr

Specifications of P0071

• Main Purpose: Reference Design, Tablet
• Embedded: Yes, FPGA / CPLD
• Utilized Ic / Part: EP4CE115
• Primary Attributes: 8-Inch TFT LCD, LED Backlight
• Secondary Attributes: 5-Megapixel Digital Image Sensor
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 4-15 Setup for the tPad_VIP_Camera demonstration
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This demonstration shows a bubble level implementation based on a digital accelerometer. We use
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C protocol to control the ADXL345 digital accelerometer, and the LCD display the interface of
our game. When tilt the tPad board, the ADXL345 measures the static acceleration of gravity. In our
Nios II software, we compute the change of angle in the x-axis and y-axis, and show angle data in
the LCD display.
Figure 4-16
shows the hardware system block diagram of this demonstration. The system is
clocked by an external 50MHz Oscillator. Through the internal PLL module, the generated 150MHz
clock is used for Nios II processor and other components, and there also a 40MHz pixel clock for
the video pipeline and 10MHz for low-speed peripherals.
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