Alinx AX7102 User manual

ARTIX-7 FPGA
Development Board
AX7102
User Manual

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Version Record
Version
Date
Release By
Description
Rev 1.2
2020-10-28
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 [email protected]om
for correction.
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Customer Service Information
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Table of Contents
Version Record .............................................................................................2
Part 1: FPGA Development Board Introduction .......................................... 6
Part 2: AC7100B core board ......................................................................10
Part 2.1: AC7100B Core Board Introduction ......................................10
Part 2.2: FPGA Chip ........................................................................... 12
Part 2.3: Active Differential Crystal .....................................................13
Part 2.4: DDR3 DRAM ........................................................................16
Part 2.5: QSPI Flash ...........................................................................18
Part 2.6: LED Light on Core Board .................................................... 20
Part 2.7: Reset key ............................................................................. 20
Part 2.8: JTAG Interface .....................................................................21
Part 2.9: Power Interface on the Core Board .....................................22
Part 2.10: Board to Board Connectors pin assignment .....................23
Part 2.11: Power Supply .....................................................................30
Part 2.12: Form Factors ......................................................................32
Part 3: Carrier Board ..................................................................................33
Part 3.1: Carrier Board Introduction ................................................... 33
Part 3.2: Gigabit Ethernet Interface ................................................... 34
Part 3.3: SFP Interface ....................................................................... 36
Part 3.4: VGA display interface .......................................................... 38
Part 3.5: USB2.0 Interface ................................................................. 40
Part 3.6: SD Card Slot ........................................................................42
Part 3.7: USB to Serial Port ................................................................44
Part 3.8: RS232 Interface ...................................................................46
Part 3.9: EEPROM 24LC04 ................................................................47
Part 3.10: Real time clock DS1302 .................................................... 48
Part 3.11: Expansion Header ............................................................. 49

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Part 3.12: JTAG Interface ...................................................................52
Part 3.13: keys ....................................................................................53
Part 3.14: LED Light ........................................................................... 54
Part 3.15: Power Supply .....................................................................55

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This ARTIX-7 FPGA development platform adopts the core board + carrier
board mode, which is convenient for users to use the core board for secondary
development.
In the design of carrier board, we have extended a wealth of interfaces for
users, such as 2 fiber interfaces, 1 Gigabit Ethernet interfaces, 1 USB2.0 , VGT
output interface, RS232 interface etc. It meets user's requirements for
high-speed data exchange, video transmission processing and industrial
control. It is a "Versatile" ARTIX-7 FPGA development platform. It provides the
possibility for high-speed video transmission, pre-validation and
post-application of network and fiber communication and data processing. This
product is very suitable for students, engineers and other groups engaged in
ARTIX-7FPGA development.

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Part 1: FPGA Development Board Introduction
The entire structure of the AX7102 FPGA development board is inherited
from our consistent core board + carrier board model. A high-speed inter-board
connector is used between the core board and the carrier board.
The core board is mainly composed of FPGA + 2 DDR3 + QSPI FLASH,
which undertakes the functions of high-speed data processing and storage of
FPGA, high-speed data reading and writing between FPGA and two DDR3s,
data bit width is 32 bits, and the bandwidth of the whole system is up to 25Gb.
/s(800M*32bit); The two DDR3 capacities are up to 8Gbit, which meets the
need for high buffers during data processing. The selected FPGA is the
XC7A100T chip of XILINX's ARTIX-7 series, in BGA 484 package. The
communication frequency between the XC7A100T and DDR3 reaches 400Mhz
and the data rate is 800Mhz, which fully meets the needs of high-speed
multi-channel data processing. In addition, the XC7A100T FPGA features four
GTP high-speed transceivers with speeds up to 6.6Gb/s per channel, making it
ideal for fiber-optic communications and PCIe data communications.
The AX7102 carrier board expands its rich peripheral interface, including 2
SFP interfaces, 1 Gigabit Ethernet interfaces, 1 USB2.0 HOST interfaces, 1
VGA output interface, 1 RS232 interface, 1 UART serial interface. 1 SD card
interface, 2-way 40-pin expansion header, some keys and RTC circuit.

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Figure 1-1-1: The Schematic Diagram of the AX7102
Through this diagram, you can see the interfaces and functions that the
AX7102 FPGA Development Board contains:
Artix-7 FPGA core board
The core board consists of XC7A100T + 8Gb DDR3 + 128Mb QSPI
FLASH. There are two high-precision Sitime LVDS differential crystals,
one at 200MHz and the other at 148.5MHz, providing stable clock input
for FPGA systems and GTP modules.
1-channel Gigabit Ethernet Interface RJ-45 interface
The Gigabit Ethernet interface chip uses Realtek's RTL8211EG
Ethernet PHY chip to provide network communication services to users.

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RTL8211EG chip supports 10/100/1000 Mbps network transmission
rate. Full duplex and adaptive
2-channel high-speed SFP Interface
The two high-speed transceivers of the GTP transceiver of ARTIX-7
FPGA are connected to the transmission and reception of two optical
modules to realize two high-speed optical fiber communication
interfaces. Each fiber optic data communication receives and transmits
at speeds up to 6.6 Gb/s.
1-channel VGA Output interface
The development board uses ADI's ADV7123 chip to achieve VGA
output, realizing 24-bit true color RGB digital signal analog conversion,
resolution up to 1080p@60Hz output.
1-channel USB2.0 Interface
USB2.0 high-speed communication between FPGA development board
and PC is realized by Cypress CY7C68013A USB2.0 controller chip;
1-channel Uart to USB interface
1 Uart to USB interface for communication with the computer for user
debugging. The serial port chip is the USB-UAR chip of Silicon Labs
CP2102GM, and the USB interface is the MINI USB interface.
1-channel RS232 interface
Uart to RS232 interface for data communication with a computer or
other settings. The RS232 conversion chip is the MAX323, and the
RS232 interface uses the standard DB9 interface.
Micro SD card slot
1-port Micro SD card holder, support SD mode and SPI mode
RTC real time clock
Onboard RTC real time clock with battery holder, battery model
CR1220
EEPROM

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Onboard an IIC interface EEPROM 24LC04
2-way 40-pin expansion port
2-way 40-pin 0.1inch spacing expansion port 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.
JTAG Interface
A 10-pin 0.1 spacing standard JTAG ports for FPGA program download
and debugging.
keys
4 keys; 1 reset key (on the core board)
LED Light
5 user LEDs (1 on the core board and 4 on the carrier board)

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Part 2: AC7100B core board
Part 2.1: AC7100B Core Board Introduction
AC7100B (core board model, the same below) FPGA core board, it is
based on XILINX's ARTIX-7 series 100T XC7A100T-2FGG484I. It is a
high-performance core board with high speed, high bandwidth and high
capacity. It is suitable for high-speed data communication, video image
processing, high-speed data acquisition, etc.
This AC7100 core board uses two pieces of MICRON's
MT41J256M16HA-125 DDR3 chip, each DDR has a capacity of 4Gbit; two
DDR chips are combined into a 32-bit data bus width, and the read/write data
bandwidth between FPGA and DDR3 is up to 25Gb; such a configuration can
meet the needs of high bandwidth data processing.
The AC7100B core board expands 180 standard IO ports of 3.3V level, 15
standard IO ports of 1.5V level, and 4 pairs of GTP high speed RX/TX
differential signals. For users who need a lot of IO, this core board will be a
good choice. Moreover, the routing between the FPGA chip and the interface is
equal length and differential processing, and the core board size is only 45*55
(mm), which is very suitable for secondary development.