Blackfin Landscape LCD EZ-Extender Manual
2-5
Landscape LCD EZ-Extender Hardware Reference
LCD Touch SPI Chip Select Jumper (JP3)
The LCD touch
SPICS
jumper (
JP3
) connects the chip select pin of the
AD7879 SPI interface (
U1
) to one of three SPI select pins of the Blackfin
processor.
JP3
adds flexibility to the extender: you can choose any one of
the available SPI select pins (
SPISEL1—3
) of the processor (see
).
By default,
JP3
is populated, so that
SPISEL2
of the expansion interface II
or the PPI stamp connector can be used. When the PPI stamp connector is
used to attach the extender,
SPISEL3
is unavailable and only
SPISEL1
and
SPISEL2
are available for
JP3
.
LCD Reset Jumper (JP5)
The LCD reset jumper (
JP5
) connects the reset pin of the LCD display to
one of the following.
• The reset pin of the EZ-KIT Lite/EZ-Board
• A general-purpose I/O (GPIO) pin of the AD7147 capacitive
touch controller (
U3
)
• A GPIO pin connected directly to the Blackfin processor
Table 2-3. JP3 Settings
Functionality
JP3 Setting
LCD touch
SPICS
connected to
SPISEL1
JP3.1
and
JP3.2
LCD touch SPICS connected to SPISEL2
JP3.3 and JP3.4 (default)
LCD touch
SPICS
connected to
SPISEL3
JP3.5
and
JP3.6
