FRONTGRADE GR716-BOARD Bedienungsanleitung
Frontgrade Gaisler AB
Kungsgatan 12 | SE-411 19 Goteborg | Sweden
+46 31 7758650 | frontgrade.com/gaisler
2
GR716-BOARD
GR716-BOARD-UM
Oct 2023, Version 1.0
TABLE OF CONTENTS
1Introduction...................................................................................................................4
1.1 Scope and Purpose of the Document .....................................................................4
1.2 Reference Documents ............................................................................................4
2Abbreviations................................................................................................................4
3Introduction...................................................................................................................5
3.1 Overview.................................................................................................................5
3.2 Handling .................................................................................................................6
4Board Design................................................................................................................7
4.1 Board Block Diagram..............................................................................................7
4.2 Board Mechanical Configuration.............................................................................8
4.3 GR716 Microcontroller..........................................................................................11
4.4 Memory.................................................................................................................12
4.5 LVDS Interfaces....................................................................................................13
4.6 GPIO.....................................................................................................................14
4.7 Bootstrap Signals..................................................................................................14
4.8 Debug Support Unit Interfaces..............................................................................15
4.9 Oscillators and Clock Inputs .................................................................................16
4.10 Power Supply and Voltage Regulation..................................................................17
4.11 Reset Circuit and Button.......................................................................................20
4.12 Watchdog..............................................................................................................20
5Setting Up and Using the Board .................................................................................20
6Interfaces and Configuration.......................................................................................21
6.1 List of connectors..................................................................................................21
6.2 List of Oscillators, Switches and LED’s.................................................................23
Frontgrade Gaisler AB
Kungsgatan 12 | SE-411 19 Goteborg | Sweden
+46 31 7758650 | frontgrade.com/gaisler
3
GR716-BOARD
GR716-BOARD-UM
Oct 2023, Version 1.0
List of Figures
Figure 3-1 GR716-BOARD Development Board ...............................................................5
Figure 4-1 GR716-BOARD Board Block Diagram .............................................................7
Figure 4-2 GR616-BOARD Board Dimensions..................................................................8
Figure 4-3 GR716-BOARD mounted on a GR716-CPCI-DEV Carrier board ....................9
Figure 4-4 GR716-TEST-MEMORY BOARD...................................................................10
Figure 4-5 GR716-TEST-ADCDAC BOARD....................................................................10
Figure 4-6 GR716 Microcontroller Block Diagram ...........................................................11
Figure 4-7 GR716 Package.............................................................................................11
Figure 4-8 SPI Boot Memory Connectons.......................................................................12
Figure 4-9 Debug Support Unit connections....................................................................15
Figure 4-10 GR716-DSU-USB Adapter..........................................................................15
Figure 4-11 Board level Clock Distribution Scheme .......................................................16
Figure 4-12 Power Regulation Scheme .........................................................................18
Figure 4-13 Power Supply Configuration Jumpers.........................................................19
Figure 6-1 PCB Top View ................................................................................................24
Figure 6-2 PCB Bottom View...........................................................................................25
Figure 6-3 PCB Top View (Photo)....................................................................................26
Figure 6-4 PCB Bottom View (Photo) ..............................................................................27
List of Tables
Table 1: Bootstrap Resistor Settings..................................................................................14
Table 2: List of Connectors ................................................................................................21
Table 3: J1 Screw Terminal Connector for Input Voltages..................................................21
Table 4: J2 POWER-External Power Connector ................................................................21
Table 5: Expansion connector P1 Pin-out .........................................................................22
Table 6: Expansion connector P2 pin-out ..........................................................................22
Table 7: List and definition of Oscillators and Crystals.......................................................23
Table 8: List and definition of PCB mounted LED's............................................................23
Table 9: List and definition of Switches ..............................................................................23
Table 10: Definition of Switch S1 functions (refer to [RD1]) ...............................................23
Frontgrade Gaisler AB
Kungsgatan 12 | SE-411 19 Goteborg | Sweden
+46 31 7758650 | frontgrade.com/gaisler
4
GR716-BOARD
GR716-BOARD-UM
Oct 2023, Version 1.0
1 INTRODUCTION
1.1 Scope and Purpose of the Document
This document provides a User's Manual and Interface document for the “GR716-BOARD”
Development and Demonstration board.
The work has been performed by Frontgrade Gaisler AB, Göteborg, Sweden.
1.2 Reference Documents
[RD1] GR716, Data Sheet and User's Manual",Frontgrade Gaisler, GR716-UM-DS,
available from http://www.gaisler.com/index.php/products/components/GR716
[RD2] GR716-BOARD_schematic.pdf, Schematic
[RD3] GR716-BOARD_assy_drawing.pdf, Assembly Drawing
[RD4] GRMON3 User's Manual, available from:
https://www.gaisler.com/index.php/products/debug-tools/grmon3
2 ABBREVIATIONS
ASIC
Application Specific Integrated Circuit.
DSU
Debug Support Unit
EDAC
Error Detection and Correction
ESA
European Space Agency
ESD
Electro-Static Discharge
ESTEC
European Space Research and Technology Center
GPIO
General Purpose Input / Output
IC
Integrated Circuit
I/O
Input/Output
IP
Intellectual Property
LDO
Low Drop-Out
PCB
Printed Circuit Board
POL
Point of Load
SOC
System On a Chip
SPW
Spacewire
TBC
To Be Confirmed
TBD
To Be Defined
Frontgrade Gaisler AB
Kungsgatan 12 | SE-411 19 Goteborg | Sweden
+46 31 7758650 | frontgrade.com/gaisler
5
GR716-BOARD
GR716-BOARD-UM
Oct 2023, Version 1.0
3INTRODUCTION
3.1 Overview
This document describes the GR716-BOARD Development Board.
This equipment is intended to be used as a platform for the demonstration of the
Frontgrade Gaisler GR716 RAD Hard Microcontroller.
Furthermore, this board provides developers with a convenient hardware platform for the
evaluation and development of software for the GR716 microcontroller.
The GR716 Microcontroller features a fault-tolerant LEON3 SPARC V8 processor,
communication interfaces and on-chip ADC, DAC, Power-on-Reset, Oscillator, Brown-out
detection, LVDS transceivers, regulators to support for single 3.3V supply, ideally suited for
space and other high-rel applications.
The GR716 Microcontroller is a complex device with multifunctional pins whose function
depend on the mode of operation and programming of internal registers of the device. This
board treats the pins in a generic manner to allow easy access to all the pins and features
of the GR716 microcontroller.
Figure 3-1 GR716-BOARD Development Board
Frontgrade Gaisler AB
Kungsgatan 12 | SE-411 19 Goteborg | Sweden
+46 31 7758650 | frontgrade.com/gaisler
6
GR716-BOARD
GR716-BOARD-UM
Oct 2023, Version 1.0
The board contains the following main items as detailed in section 0 of this document:
•size 80 x 100mm
•two 2x32 pin stackable 0.1” headers allowing access to all I/O pins
•connector for single VIN power input (+5V to +12V)
•alternative connector for connections to individual device power supplies
•jumpers for power supply configuration
•on-board regulators converting from VIN to 3.3V & 1.8V
•256 Mbit SPI memory (Cypress, S25FL256SAGN in 8 pin WSON
package)
•socket for crystal (25MHz TBC)
•DIP switch for bootstrap settings
•on-board I2C voltage/current measurement
3.2 Handling
ATTENTION: OBSERVE PRECAUTIONS FOR
HANDLING ELECTROSTATIC SENSITIVE DEVICES
This unit contains sensitive electronic components which can be damaged by Electrostatic
Discharges (ESD). When handling or installing the unit observe appropriate precautions
and ESD safe practices.
When not in use, store the unit in an electrostatic protective container or bag.
When configuring the jumpers on the board, or connecting/disconnecting cables, ensure
that the unit is in an un-powered state.
When operating the board in a 'stand-alone' configuration, the power supply should be
current limited to prevent damage to the board or power supply in the event of an over-
current situation.
This board is intended for commercial use and evaluation in a standard laboratory
environment, nominally, 20°C. All devices are standard commercial types, intended for use
over the standard commercial operating temperature range (0 to 70ºC).
Frontgrade Gaisler AB
Kungsgatan 12 | SE-411 19 Goteborg | Sweden
+46 31 7758650 | frontgrade.com/gaisler
7
GR716-BOARD
GR716-BOARD-UM
Oct 2023, Version 1.0
4 BOARD DESIGN
4.1 Board Block Diagram
The GR716-BOARD Board provides the electrical functions and interfaces as represented
in the block diagram, Figure .Figure 4-2.
Figure 4-1 GR716-BOARD Board Block Diagram
Note that not all features and interfaces are available at the same time, and the
configuration of on-board resistors plus programming of registers is required to access
some of the features.
CRYSTAL
CRYSTAL
GR716
MICRO-
CONTROLLER
GR716
MICRO-
CONTROLLER
RESET_OUT
RESET_OUT
EXPANSION CONNECTOR
DCDC
DCDC SPI
FLASH
SPI
FLASH
GPIO
GPIO
DSU
DSU
BOOTSTRAP/
CONFIGURATION
BOOTSTRAP/
CONFIGURATION
3.3V
RESET_IN
RESET_IN
DCDC
DCDC
1.8V
VIN
VIN
LVDS
LVDS
CONFIGURATION
JUMPERS
CONFIGURATION
JUMPERS
Frontgrade Gaisler AB
Kungsgatan 12 | SE-411 19 Goteborg | Sweden
+46 31 7758650 | frontgrade.com/gaisler
8
GR716-BOARD
GR716-BOARD-UM
Oct 2023, Version 1.0
4.2 Board Mechanical Configuration
The board (80 x 100mm) and can be used 'stand-alone' on the bench-top simply an
external +5V power supply connected to connector J2. For mounting of the board on a
carrier or expansion board, four M2.5 mounting holes are provided in the corners of the
board, as shown in the figure below.
Figure 4-2 GR616-BOARD Board Dimensions
The expansion connectors P1 and P2 of the GR716-BOARD are stacking style connectors
having a socket on the bottom side and an extended pin on the top side. In a stand-alone
configuration the pins on the top side allow easy access for Logic Analyser or Oscilloscope
probing for all the functional microcontroller pins.
The sockets on the bottom side allow the board to be plugged on to a carrier board to
conveniently enable further development testing.
The CPCI format board providing GPIO, SPW, Serial (via FTDI-USB) and analog coaxial
connector which has been developed for this purpose is shown in Figure 4-3.
Frontgrade Gaisler AB
Kungsgatan 12 | SE-411 19 Goteborg | Sweden
+46 31 7758650 | frontgrade.com/gaisler
9
GR716-BOARD
GR716-BOARD-UM
Oct 2023, Version 1.0
Figure 4-3 GR716-BOARD mounted on a GR716-CPCI-DEV Carrier board
Alternatively, the stacking connector concept allows the interface functions to be expanded
by stacking the GR716-BOARD to other boards in a concept similar to PC104.
A test board for adding memory (SPI serial, 8 bit parallel FLASH and 8 bit SRAM) is shown
in Figure 4-4, and a test board for exercising the Analog features of the GR716
microcontroller is shown in Figure 4-5.
This concept also provides a convenient way for User Defined interface boards to be
developed and connected to the GR716-BOARD, if other functions or features are to be
demonstrated.
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