Efinix Trion T8 BGA81 User manual

Trion® T8 BGA81
Development Kit User
Guide
T8F81C-DK-UG-v2.0
August 2020
www.efinixinc.com
Copyright © 2020. All rights reserved. Efinix, the Efinix logo, Quantum, Trion, and Efinity are trademarks of Efinix, Inc. All other trademarks and
service marks are the property of their respective owners. All specifications subject to change without notice.

Contents
Introduction..................................................................................................................................... 3
What's in the Box?.................................................................................................................................... 3
Register Your Kit........................................................................................................................................ 3
Download the Efinity® Software.............................................................................................................. 3
Installing Standoffs..........................................................................................................................3
Board Functional Description..........................................................................................................4
Features.......................................................................................................................................................4
Overview..................................................................................................................................................... 5
Power On.................................................................................................................................................... 6
Reset............................................................................................................................................................ 6
Clock Sources............................................................................................................................................ 6
Headers.......................................................................................................................................................7
User Outputs............................................................................................................................................10
User Inputs............................................................................................................................................... 10
Running the Demonstration Design............................................................................................. 10
Creating Your Own Design........................................................................................................... 11
Revision History.............................................................................................................................11

Trion T8 BGA81 Development Kit User Guide
Introduction
Thank you for choosing the Trion® T8 BGA81 Development Kit (part number:
T8F81C-DK), which allows you to explore the features of the T8 FPGA.
Warning: Use correct anti-static methods when handling the board.
What's in the Box?
•Trion® T8 BGA81 Development Board preloaded with a demonstration design
•4 standoffs
•4 screws
•3 foot mini-USB cable (type B)
Register Your Kit
When you purchase an Efinix development kit, you also receive a copy of the Efinity®
software plus one year of software upgrades and patches. The Efinity® software is available
for download from the Support Center on the Efinix web site.
To get access to our Support Center to download your software, register your development
kit at https://www.efinixinc.com/register.
Download the Efinity® Software
To develop your own designs for the T8 device on the board, you must install the Efinity®
software. You can obtain the software from the Efinix® Support Center under Efinity
Software (www.efinixinc.com/support/).
The Efinity® software includes tools to program the device on the board. Refer to the
Efinity® Software User Guide for information about how to program the device.
Learn more: Efinity® documentation is installed with the software (see Help > Documentation) and is also
available in the Support Center under Documentation (www.efinixinc.com/support/).
Installing Standoffs
Before using the board, attach the standoffs with the screws provided in the kit.
Warning: You can damage the board if you over tighten the screws. Tighten all screws to a torque
between 4 ± 0.5 kgf/cm and 5 ± 0.5 kgf/cm.
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Trion T8 BGA81 Development Kit User Guide
Board Functional Description
The Trion® T8 BGA81 Development Board contains a variety of components to help you
build designs for the Trion® T8 device.
Figure 1: Trion® T8 BGA81 Development Board Block Diagram
CRESET
Pushbutton
CDONE
LED
Mini-USB
Connector
2 User
Pushbuttons
5 User LEDs
T8 FPGA
Header
Bank 2A
Header
Bank 2B
33.333 MHz
Oscillator
Header
Bank 1A/1B
NOR
Flash
Atmel
Microcontroller
SPI
Header
18 16
17
USB 5 V
2 Voltage
Select Headers
Power
OK LED
Features
•Compact design (76.2 x 63.5 mm)
•Efinix® T8F81C device in an 81-ball FineLine BGA package
•Atmel microcontroller with built-in USB controller
•Winbond 8 Mbit SPI NOR flash memory
•Mini-USB 2.0 type B receptacle
•Power source: USB 5 V, 500 mA USB
•On-board low dropout regulators (maximum at 180 mA) source 3.3 V and 2.5 V
components. The 5 V USB sources the 1.8 V and 1.1 V components.
•Selectable 3.3 V, 2.5 V, and 1.8 V VDDIO for T8F81C I/O banks 2A and 2B
•Fixed 3.3 V VDDIO for T8F81C I/O banks 1A and 1B
•33.333 MHz oscillator for T8F81C PLL input
Note: Optionally, the user can drive the PLL input via a pin in the T8F81C bank 1B
I/O header. See Clock Sources on page 6 for details.
•5 LEDs on T8F81C bank 1A and 1B I/O pins for user outputs
•2 pushbutton switches connected to T8F81C bank 1A I/O pins for user inputs
•Power good and T8F81C configuration done LEDs
•5 V USB header to provide power for external devices
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Trion T8 BGA81 Development Kit User Guide
Overview
The board features the Efinix® T8 programmable device in a 81-ball FBGA package, which is
fabricated using Efinix® Quantum™ technology. The Quantum™-accelerated programmable
logic and routing fabric is wrapped with an I/O interface in a small footprint package. T8
devices also include embedded memory blocks and multiplier blocks (or DSP blocks). You
create designs for the T8 device in the Efinity® software, and then download the resulting
configuration bitstream to the board using the USB connection.
Note: For more information on T8 FPGAs, refer to the T8 Data Sheet, which you can
download in our Support Center under Docs (www.efinixinc.com/support/).
Figure 2: Trion® T8 BGA81 Development Board Components
Trion T8F81C
Device
SPI NOR Flash
Atmel
Microcontroller
On-Board
Low Dropout
Regulators
Oscillator Clock
33.333 MHz
Bank 1A/1B
GPIO (J3)
Select PLL Input
Source (J27)
Mini-USB
Type B
Voltage Select
for Bank 2B
VDDIO (J8)
Voltage Select
for Bank 2A
VDDIO (J6)
Bank 2A
GPIO (J4)
Bank 2B
GPIO (J5)
User LEDs
User Pushbuttons
Power
OK LED
CDONE
LED
Reset Pushbutton
5 V Power for
External Devices
The Atmel microcontroller has a built-in USB controller; it receives the T8 configuration
bitstream from a USB host and writes to the on-board SPI NOR flash memory. The
microcontroller can also write the configuration bitstream directly to the device when it is
configured to boot in passive mode.
The SPI NOR flash memory stores the configuration bitstream it receives from the
microcontroller. The T8 device accesses this configuration bitstream when it is in active
configuration mode (default).
The board's main power supply is the 5 V DC (500 mA) it receives from the USB interface.
The board regulates down the 5 V DC using on-board low dropout regulators to provide the
necessary voltages for the T8 device, SPI flash memory, and on-board oscillator.
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Trion T8 BGA81 Development Kit User Guide
Power On
Upon power-up, the USB power supply is input to the on-board regulators to generate the
required 3.3 V, 2.5 V, 1.8 V, and 1.1 V for components on the board. When these voltages are
up and stable, the board asserts a “power good” signal (pulled high) from the components'
respective regulators. This power good signal triggers the Atmel microcontroller to bring the
T8F81C device out of reset.
The power good signal is also connected to a green LED (D1). By default, the power good
signal is pulled low, and the LED is turned off. When the board asserts the power good signal,
the LED turns on, giving you a visual confirmation that the power supplies on the board are
up and stable.
Reset
The T8F81C device is typically brought out of reset with the CRESET signal. Upon power
up, the T8F81C device is held in reset until CRESET toggles high-low-high.
Note: CRESET is connected to the Atmel microcontroller, therefore, firmware can control the high-low-
high transition. If you have not loaded firmware into the Atmel microcontroller, you can manually assert the
high-low-high transition with pushbutton switch SW1.
CRESET has a pull-up resistor. When you press SW1, the board drives CRESET low; when
you release SW1, the board drives CRESET high. Thus, a single press of SW1 provides the
required high-low-high transition.
After toggling CRESET, the T8F81C device goes into configuration mode and reads the
device configuration bitstream from the flash memory. When configuration completes
successfully, the device drives the CDONE signal high. CDONE is connected to a green LED
(D8), which turns on when the T8F81C device enters user mode.
Clock Sources
You can clock the T8F81C device using the 33.333 MHz oscillator, which drives the T8F81C
PLL IN pin. Alternatively, you can disable the 33.333 MHz oscillator and source the T8F81C
PLL input from the GPIOL_20 pin in the T8F81C bank 1A / 1B header (J27).
Figure 3: Clocking Options
Bank 1A/1B
Header
(J27)
GPIOL_20
T8 FPGA
PLL IN
33.333 MHz
Use the jumper to select the PLL source.
In this example, the jumper selects GPIOL_20.
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Trion T8 BGA81 Development Kit User Guide
Headers
The board contains a variety of headers to provide power, inputs, and outputs, and to
communicate with external devices or boards.
Table 1: Trion® T8 BGA81 Development Board Headers
Reference Designator Description
J1 Mini-USB type B socket
J3 22-pin header for T8F81C bank 1A/1B I/O
J4 22-pin header for T8F81C bank 2A I/O
J5 22-pin header for T8F81C bank 2B I/O
J6 6-pin header to select T8F81C VDDIO2A
J8 6-pin header to select T8F81C VDDIO2B
J27 3-pin header to select T8F81C PLL input source
J29 2-pin header to provide USB 5 V for external devices or boards
Header J1
J1, a mini-USB type B socket, is the interface between the board and your computer for
power and communication. Because the USB cable provides power to the board, the
board must be connected to your computer even if the computer (host) is not actively
communicating with the board. To operate, the board expects to receive 5 V DC (500 mA)
on this interface.
Headers J3, J4, and J5
The board headers J3, J4, and J5 contain the Trion® T8 BGA81 Development Board GPIO
pins. These 2 x 11 (22-pin) headers connect external devices to T8F81C I/O banks 1A/1B,
bank 2A, and bank 2B, respectively.
•J3 links to bank 1A and 1B GPIO pins. VDDIO is fixed at 3.3 V.
•J4 links to bank 2A GPIO pins. Bank 2A VDDIO is selectable, and is brought out to the
header; it is the same as the VDDIO2A supply on the T8F81C device. Refer to J6 Header
on page 8 for the pin you use to select VCCIO2A power.
•J5 links to bank 2B GPIO pins. VDDIO is selectable, and is brought out to the header; it
is the same as the VDDIO2B supply on the T8F81C device. Refer to J8 Header on page
8 for the pin you use to select VCCIO2A power.
Table 2: Header J3, J4, and J5 Pin Assignments
Pin Number J3(1) J4(1) J5(1)
1 3.3 V VDDIO2A VDDIO2B
2 3.3 V VDDIO2A VDDIO2B
3 GPIOL_00 GPIOR_00 GPIOR_20
4 GPIOL_13 GPIOR_11 GPIOR_28
5 GPIOL_03 GPIOR_01 GPIOR_21
6 GPIOL_14 GPIOR_12 GPIOR_30
(1) Use these pin names when using the Interface Designer in the Efinity software.
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Trion T8 BGA81 Development Kit User Guide
Pin Number J3(1) J4(1) J5(1)
7 GPIOL_05 GPIOR_02 GPIOR_22
8 GPIOL_15 GPIOR_13 GPIOR_31
9 GPIOL_07 GPIOR_03 GPIOR_23
10 GPIOL_16 GPIOR_14 GPIOR_32
11 GPIOL_09 GPIOR_05 GPIOR_24
12 GPIOL_17 GPIOR_15 GPIOR_34
13 GPIOL_10 GPIOR_06 GPIOR_25
14 GPIOL_18 GPIOR_16 GPIOR_35
15 GPIOL_11 GPIOR_07 GPIOR_26
16 GPIOL_19 GPIOR_17 GPIOR_36
17 GPIOL_12 GPIOR_08 GPIOR_27
18 GPIOL_20 GPIOR_18 GPIOR_37
19 NC GPIOR_10 NC
20 GPIOL_21 GPIOR_19 NC
21 GND GND GND
22 GND GND GND
J6 Header
J6 is a 2 x 3 (6-pin) header that lets you select 3.3 V, 2.5 V, or 1.8 V for T8F81C bank 2A
VDDIO (VDDI02A) from the on-board regulators.
Table 3: Header J6 Pin Assignments
Pin Number Signal
1 1.8 V
2 VDDIO2A
3 2.5 V
4 VDDIO2A
5 3.3 V
6 VDDIO2A
•A shunt connecting J6 pins 1 and 2 selects 1.8 V.
•A shunt connecting J6 pins 3 and 4 selects 2.5 V.
•A shunt connecting J6 pins 5 and 6 selects 3.3 V (default).
CAUTION: Only select one voltage at a time. Installing more than one shunt on J6
may cause contention.
J8 Header
J8 is a 2 x 3 (6-pin) header that lets you select 3.3 V, 2.5 V, or 1.8 V for T8F81C bank 2B
VDDIO (VDDI02B) from the on-board regulators.
(1) Use these pin names when using the Interface Designer in the Efinity software.
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Trion T8 BGA81 Development Kit User Guide
Table 4: Header J6 Pin Assignments
Pin Number Signal
1 1.8 V
2 VDDIO2B
3 2.5 V
4 VDDIO2B
5 3.3 V
6 VDDIO2B
•A shunt connecting J8 pins 1 and 2 selects 1.8 V.
•A shunt connecting J8 pins 3 and 4 selects 2.5 V.
•A shunt connecting J8 pins 5 and 6 selects 3.3 V (default).
CAUTION: Only select one voltage at a time. Installing more than one shunt on J8
may cause contention.
J27 Header
J27 is a 3-pin header used to select the source for the T8F81C PLL input. The PLL can
receive input from the on-board 33.333 MHz oscillator or a user supplied clock on pin 20
(GPIOL_20) on J3 (T8F81C bank 1A/1B header).
Table 5: Header J27 Pin Assignments
Pin Number Signal
1User supplied clock(2)
2 T8F81C PLL input
3 On-Board 33.333 MHz oscillator
J29 Header
J29 is a 2-pin header that provides the 5 V input from the USB interface as a power source for
external devices that interface with the development board. Because this supply is from the
USB interface, you are limited to 500 mA of current. However, the same 5 V also feeds into
the on-board regulator that supplies 1.1 V core to the T8F81C, 3.3 V to the flash device and
oscillator, and 3.3 V, 2.5 V, and 1.8 V to T8F81C VDDIO pins.
CAUTION: Use caution when driving external peripherals or boards. The current draw
should not exceed the USB limit of 500 mA.
Table 6: Header J29 Pin Assignments
Pin Number Signal
1 USB 5 V
2 USB GND
(2) Default: a shunt connecting pins 2 and 3 selects the user-supplied clock.
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Trion T8 BGA81 Development Kit User Guide
User Outputs
The board has 5 green user LEDs that are connected to I/O pins in T8F81C banks 1A/1B. By
default, the T8F81C I/O connected to these LEDs have a pull-up resistor that turns the LEDs
off; to turn a given LED on, pull the corresponding I/O signal low.
Table 7: User Outputs
Reference Designator T8F81C I/O Active
D2 GPIOL_03 Low
D3 GPIOL_09 Low
D5 GPIOL_16 Low
D6 GPIOL_18 Low
D7 GPIOL_21 Low
User Inputs
The board has 2 pushbutton switches that you can use as inputs to the T8F81C device. The
T8F81C bank 1A I/O signals connected to these switches have a pull-up resistor. When you
press the switch, the signal drives low, indicating user input.
Table 8: User Inputs
Reference Designator T8F81C I/O Active
SW2 GPIOL_12 Low
SW3 GPIOL_13 Low
Running the Demonstration Design
Efinix® preloads the Trion® T8 BGA81 Development Board with a demonstration design that
operates the LEDs. The board receives power through USB cable. Follow these steps to run
the design:
1. Connect the USB cable to the board and to your computer.
•LED D1 turns on.
•When configuration completes, the configuration done LED (D8) turns on.
•Four green LEDs (D2, D3, D5, D6) turn on, sweeping in one direction.
2. Press and hold pushbutton SW3. The LED sweep direction reverses and LED D7 turns
on. When you release the pushbutton, the LEDs resume the original sweep direction.
3. Press and hold pushbutton SW2 to turn off all LEDs. When you release the pushbutton,
the LEDs resume sweeping in the original direction.
Learn more: Go to the Support Center for example designs and documentation.
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Trion T8 BGA81 Development Kit User Guide
Creating Your Own Design
The Trion® T8 BGA81 Development Board allows you to create and explore designs for the
T8 device. Efinix® provides example code and designs to help you get started:
•Our Support Center (www.efinixinc.com/support) includes examples targeting the
board.
•The Efinity software includes also example designs that you can use as a starting point for
your own project, and includes a step-by-step tutorial.
Revision History
Table 9: Revision History
Date Version Description
August 2020 2.0 Added topic on how to register the kit.
Corrected information about LED operation.
Updated development board block diagram.
June 2018 1.0 Initial release.
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