Alinx AX7035 User manual

ARTIX-7 FPGA
Development Board
AX7035
User Manual

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Version Record
Version
Date
Release By
Description
Rev 1.0
2019-04-26
Rachel Zhou
First Release
The English version was translated by Shanghai Tianhui Trading
Company. They has not been officially Review by ALINX and are for reference
only. If there are any errors, please send email to [e-mail]
for correction.
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Customer Service Information
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Technical Email:supp[email protected]om
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Table of Contents
Version Record .............................................................................................2
Part 1: FPGA Development Board Introduction .......................................... 5
Part 2: Structure Diagram ............................................................................8
Part 3: Power Supply ................................................................................... 9
Part 4: FPGA Chip ..................................................................................... 10
Part 5: 50M active crystal oscillator ........................................................... 11
Part 6:DDR3 DRAM ...................................................................................12
Part 7: QSPI Flash .....................................................................................15
Part 8: Gigabit Ethernet Interface ..............................................................17
Part 9: HDMI1 Output interface ................................................................. 19
Part 10: HDMI1 input interface (also used as an output) ..........................22
Part 11: USB 2.0 Communication Interface .............................................. 25
Part 12: SD Card Slot ................................................................................ 26
Part 13: USB to Serial Port ........................................................................28
Part 14: EEPROM 24LC04 ........................................................................29
Part 15: Digital Tube .................................................................................. 30
Part 16: Temperature Sensor .................................................................... 33
Part 17: Expansion Header ....................................................................... 34
Part 18: FPC Expansion Ports ...................................................................37
Part 19: JTAG Interface ............................................................................. 39
Part 20: User Keys .....................................................................................40
Part 21: LED Light ......................................................................................42

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The AX7035 FPGA development board, it is the ARTIX-7 FPGA
development platform.
The ARTIX-7 FPGA development platform uses XILINX's ARTIX-7 chip,
and theAX7035 FPGA development board are designed with a rich peripheral
interface. For example, one HDMI input interface, one HDMI output interface,
one Gigabit Ethernet interface, one USB2.0 interface, Uart interface,
downloader interface and two 40-pin expansion ports, and so on.It meets
user's requirements for high-speed data transmission, video processing and
industrial control. It is a "Versatile" ARTIX-7 FPGA development platform. It
provides the possibility for pre-verification and post-application of high-speed
video transmission, data communication, image processing and data
processing. This product is very suitable for students, engineers and other
groups engaged in FPGA development.

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Part 1: FPGA Development Board Introduction
The AX7035 FPGA development board uses Xilinx's ARTIX-7 series of
FPGA chipsXC7A35T-2FGG484I, 484-pin FBGA package. The FPGA chip is
connected with a 256M byte DDR3 memory chip to achieve high-speed data
reading and writing between FPGA and DDR3. The data bit width is 16 bits, the
DDR read/write clock frequency reaches 400Mhz, and the bandwidth of the
whole system is up to 12.8Gb/s. (800M*16bit), which satisfies the data buffer
requirement during data processing. A 128Mbit QSPI FLASH is used as an
FPGA configuration chip to store FPGA configuration files and some user data.
The AX7035 FPGA development board has expanded a wide range of
peripheral interfaces, including one HDMI output interface, one HDMI input
interface, one Gigabit Ethernet interface, one USB2.0 interface, one UART
serial interface, one SD card interface, two 40-pin Expansion port, keys, LEDs,
EEPROM and sensor circuits.

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Figure 1-1: TheSchematic Diagram of the AX7035
Through this diagram, you can see the interfaces and functions that the
AX7035FPGA Development Board contains:
Xilinx ARTIX-7 Series FPGA Chip XC7A35T-2FGG484I
A large-capacity 2Gbit (256MB) high-speed DDR3 SDRAM can be used
as a buffer for FPGA chip data
A 50Mhz active crystal onboard provides a stable clock source for the
FPGA system
1-channelGigabit Ethernet InterfaceRJ-45 interface
The Gigabit Ethernet interface chip uses Micrel's KSZ9031RNX
Ethernet PHY chip to provide network communication services to users.
KSZ9031RNX chip supports 10/100/1000 Mbps network transmission
rate; full duplex and adaptive
1-channel HDMI image video output interface

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Supports up to 1080P@60Hz output and supports data output in
different formats
1-channel HDMI image video input interface
Supports up to 720P@60Hz input and supports data input in different
formats
1-channel high speed USB2.0 interface
Using FT232H single-channel USB chip of FTDI, it can be used for
USB2.0 high-speed communication between development board and
PC, with a maximum speed of 480Mb/s.
1-channel USB Uart interface
1-channel Uart to USB interface for communication with the computer
for user debugging. The serial port chip adopts the USB-UAR chip of
Silicon LabsCP2102GM, and the USB interface adopts the MINI USB
interface.
Micro SD slot
1-channel Micro SDslot, supports SD mode and SPI mode.
A 6-digit digital tube that dynamically displays 6 digits.
Temperature and humidity sensor
Onboard a temperature and humidity sensor chip LM75 for detecting
the temperature and humidity of the environment around the board
2-channel40-pin expansion port
Reserve 2 40-pin 2.54mm pitch expansion ports, which can be
connected to various ALINX modules (binocular camera, TFT LCD
screen, high-speed AD module, etc.). The expansion port contains 1
channel 5V power supply, 2 channel 3.3V power supply, 3 way ground,
34 IOs port.
1-channel FPC expansion port
A 15-pin FPC expansion port is reserved for connecting the user's MIPI
camera module.

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JTAG Interface
A 10-pin0.1 spacing standard JTAG ports for FPGA program download
and debugging.
Key
1 reset key, 4 user keys
LED Light
6LEDs, 1 power indicator, 1 DONE configuration indicator, 2 serial
transmit and receive indicators, 4 user LEDs.
Part 2: Structure Diagram
The size of the development board is a compact 130mm x 90mm, and the
PCB is designed with an 8-layer board. There are 4 screw positioning holes
around the FPGA board for fixing the development board. The hole diameter of
the positioning hole is 3.5mm (diameter)
Figure 2-1: Structure Diagram

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Part 3: Power Supply
The power supply voltage of the AX7035 FPGA development board is
DC5V, and Figure 3-1 is the power supply schematic:
Figure 3-1: Power Supply Schematic
The development board is powered by +5V and converted to +3.3V, +1.5V,
+1.8V, +1.0V four-way power supply through four DC/DC power supply chip
TLV62130RGT. The output current can be up to 3A per channel. VCCIO is
generated by one LDOSPX3819M5-3-3. VCCIO mainly supplies power to
BANK16 of FPGA. Users can change the IO of BANK16 to different voltage
standards by replacing their LDO chip. 1.5V generates the VTT and VREF
voltages required by DDR3 via TI's TPS51200.In addition, 1.5V generates 1.2V
to power the network interface chip through an LDO chip TPS74701. The
functions of each power distribution are shown in the following table:

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Power Supply
Function
+1.0V
FPGACore VoltageVCCINT, VCCBRAM
+1.8V
FPGA auxiliary voltageVCCAUX, VCCBATT,ADC power supply VCCADC
+3.3V
VCCIO ofFPGA, Ethernet, Serial port, HDMI, Sensor, FLASH, EEPROM,
and SD Card
+1.5V
DDR3, Bank34 of FPGA
VREF,VTT
DDR3
VCCIO
FPGA Bank16
Because the power supply of Artix-7 FPGA has the power-on sequence
requirement, in the circuit design, we have designed according to the power
requirements of the chip, and the power-on is 1.0V->1.8V->1.5
V->3.3V->VCCIO.
Part 4: FPGA Chip
As mentioned above, the FPGA model we use is XC7A35T-2FGG484I,
which belongs to Xilinx's Artix-7 series. The speed grade is 2, and the
temperature grade is industry grade. This model is a FGG484 package with
484 pins. Xilinx ARTIX-7 FPGA chip naming rules as below
Figure 4-1: The Specific Chip Model Definition of ARTIX-7 Series
Figure 4-2: FPGA chip on board