Datasheet

Contents
iv WVGA/LCD EI3 Extender Board Manual
LCD Touch Controller (AD7879) ................................................ 1-5
Capacitive Touch Controller (AD7147) ........................................ 1-5
Digital Accelerometer (ADXL345) ................................................ 1-6
Expansion Interface III ................................................................. 1-7
Example Programs ........................................................................ 1-7
Board Design Database ................................................................. 1-8
WVGA/LCD EI3 EXTENDER BOARD HARDWARE
REFERENCE
System Architecture ...................................................................... 2-2
Software-Controlled Switches (SoftConfig) ................................... 2-3
Overview of SoftConfig ........................................................... 2-3
Programming SoftConfig on the WVGA/LCD EI3
Extender Board ....................................................................... 2-7
LCD SPI Chip Select ............................................................ 2-13
PPICLK_DIR Select ............................................................. 2-13
LCD Mode Select ................................................................ 2-13
AD7879 PENIRQ Signal ...................................................... 2-13
AD7879 SPI Chip Select ....................................................... 2-14
AD7147 Interrupt Signal ...................................................... 2-14
ADXL345 Interrupt Signals .................................................. 2-14
ADXL345 TWI/SPI Mode Select .......................................... 2-14
ADXL345 SPI Chip Select .................................................... 2-15
Connectors ................................................................................. 2-16
Expansion Interface III (EI3) Connectors (J1–2) .................... 2-17