4D Systems 4DPi-32-II Service Manual
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Please refer to the 4D Systems website for the latest Revision of this document
4DPi-32-II
3.2” Primary Display for the Raspberry Pi
REVISION 2.x HARDARE
Document Date: 17th December 2015
Document Revision: 2.1
D
ATASHEET
4DPi
-32
-II Primary Display
– Raspberry
Pi
Contents
1. Description ............................................................................................................................. 3
2. Features ................................................................................................................................. 3
3. Pin Configuration and Summary .............................................................................................. 4
4. Connecting the Display to the Pi .............................................................................................. 6
4.1. Hardware Connection ............................................................................................................................ 6
4.2. Software Download / Installation .......................................................................................................... 6
4.3. Calibrating the Touch Screen ................................................................................................................. 7
4.4. Change the Display Orientation ............................................................................................................. 7
4.5. Change the SPI Freq and Compression .................................................................................................. 7
4.6. Backlight Control .................................................................................................................................... 8
4.7. Parameters Listing .................................................................................................................................. 8
4.8. HDMI or 4DPi Output ............................................................................................................................. 8
4.9. Changing DPI output .............................................................................................................................. 8
5. Notes ..................................................................................................................................... 9
6. Scribble Box ............................................................................................................................ 9
7. Mechanical Details ............................................................................................................... 10
8. Schematic Diagram ............................................................................................................... 11
9. Specifications and Ratings ..................................................................................................... 12
10. Legal Notice ........................................................................................................................ 13
11. Contact Information............................................................................................................ 13
4D SYSTEMS 4DPi-32-II Primary Display – Raspberry Pi Compatible
© 2015 4D SYSTEMS Page 3 of 13 www.4dsystems.com.au
4DPi
-32
-II Primary Display
– Raspberry
Pi
1. Description
The 4DPi-32-II (Revision 2.x Hardware) is a 3.2”
Primary Display for the Raspberry Pi* A+, B+ and
Pi2, which plugs directly on top and displays the
primary output like what is normally sent to the
HDMI or Composite output. It features an
integrated Resistive Touch panel, enabling the
4DPi-32-II to function with the Raspberry Pi
without the need for a mouse.
Communication between the 4DPi-32-II and the
Raspberry Pi is interfaced with a high speed 48Mhz
SPI connection, which utilises an on-board
processor for direct command interpretation and
SPI communication compression, and features a
customised DMA enabled kernel. This combination
allows this display to output 25FPS when
displaying a typical image/video, and can achieve
higher depending if the image can be compressed.
The 4DPi-32-II is designed to work with the
Raspbian Operating System running on the
Raspberry Pi, as that is the official Raspberry Pi
operating system.
Note: 4DPi-32-II Hardware states 4DPi-32 as the
part number, but is identifiable as the HW Rev of
the PCB is 2.0 or above.
Note*: Raspberry Pi is a trademark of the
Raspberry Pi Foundation, and all references to the
words ‘Raspberry Pi‘ or the use of its logo/marks
are strictly in reference to the Raspberry Pi
product, and how this product is compatible with
but is not associated with the Raspberry Pi
Foundation in any way.
2. Features
• Universal 3.2” Primary Display for the Raspberry
Pi.
• Compatible with Raspberry Pi A+, B+ and PI2.
Revision 2.x hardware is not compatible with
older A or B models.
• 320x240 QVGA Resolution, RGB 65K true to life
colours, TFT Screen with integrated 4-wire
Resistive Touch Panel.
• Display full GUI output / primary output, just
like a monitor connected to the Raspberry Pi
• High Speed 48MHz SPI connection to the
Raspberry Pi, featuring SPI compression
technology.
• Typical frame rate of 25 Frames per second
(FPS), higher if image can be compressed
further by the kernel. Lower if no compression
is possible.
• Powered directly off the Raspberry Pi, no
external power supply is required.
• On/Off or PWM controlled backlight, selectable
by on board jumper.
• On board EEPROM for board identification,
following the HAT standard.
• Module dimensions: 57.3 x 92.4 x 20.5mm
(including corner plates). Weighing ~ 55g.
• Display Viewing Area: 48.60 x 64.80mm
• 4x corner plates with 2.6mm holes for
mechanical mounting.
• RoHS and CE Compliant.
4D SYSTEMS 4DPi-32-II Primary Display – Raspberry Pi Compatible
© 2015 4D SYSTEMS Page 4 of 13 www.4dsystems.com.au
4DPi
-32
-II Primary Display
– Raspberry
Pi
3. Pin Configuration and Summary
Continued overleaf…
I = Input, O = Output, P = Power
P1 Pinout (Raspberry Pi Connector – FEMALE connector)
Pin
Symbol
I/O
Description
1
+5V
P
+5V Supply Pin, connected to the main 5V supply of the Raspberry Pi
2
+3.3V
P
+3.3V Supply Pin, connected to the main 3.3V supply of the Raspberry Pi
3
+5V
P
+5V Supply Pin, connected to the main 5V supply of the Raspberry Pi
4
SDA1
I/O
I2C SDA1
5
GND
P
Ground Pin, connected to the main system Ground of the Raspberry Pi
6
SCL1
O
I2C SCL1
7
GPIO14
I/O
GPIO on the Raspberry Pi - unused
8
GPIO4
I/O
GPIO on the Raspberry Pi - unused
9
GPIO15
I/O
GPIO on the Raspberry Pi - unused
10
GND
P
Ground Pin, connected to the main system Ground of the Raspberry Pi
11
GPIO18
I/O
GPIO on the Raspberry Pi – Can be used for PWM Backlight, else unused
12
PENIRQ
I
Interrupt for the touchscreen controller
13
GND
P
Ground Pin, connected to the main system Ground of the Raspberry Pi
14
KEYIRQ
I
Interrupt for the push buttons
15
GPIO23
I/O
GPIO on the Raspberry Pi - unused
16
GPIO22
I/O
GPIO on the Raspberry Pi - unused
17
GPIO24
I/O
GPIO on the Raspberry Pi - unused
18
+3.3V
P
+3.3V Supply Pin, connected to the main 3.3V supply of the Raspberry Pi
19
GND
P
Ground Pin, connected to the main system Ground of the Raspberry Pi
20
MOSI
O
SPI MOSI Pin
21
GPIO25
I/O
GPIO on the Raspberry Pi - unused
22
MISO
I
SPI MISO Pin
23
SPI-CS0
O
SPI Chip Select 0 – Used for Xilinx Processor for Display, to Raspberry Pi
24
SCK
O
SPI SCK Clock Pin
25
SPI-CS1
O
SPI Chip Select 1 – usused
26
GND
P
Ground Pin, connected to the main system Ground of the Raspberry Pi
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