Nexys A7 User Manual

12/25/2018 Nexys A7 Reference Manual [Reference.Digilentinc]
https://reference.digilentinc.com/reference/programmable-logic/nexys-a7/reference-manual 1/30
The Nexys A7 board is a complete, ready-to-use digital circuit development platform based on the latest Artix-7™ Field Programmable
Gate Array (FPGA) from Xilinx®. With its large, high-capacity FPGA, generous external memories, and collection of USB, Ethernet, and
other ports, the Nexys A7 can host designs ranging from introductory combinational circuits to powerful embedded processors. Several
built-in peripherals, including an accelerometer, temperature sensor, MEMs digital microphone, a speaker amplifier, and several I/O devices
allow the Nexys A7 to be used for a wide range of designs without needing any other components.
(https://reference.digilentinc.com/_media/reference/programmable-logic/nexys-a7/nexys-a7-obl-600.png)
Nexys A7 Reference Manual

Nexys A7 Specifications

General

FPGA Family	Artix-7
FPGA Part Number	XC7A100T-1CSG324C
Logic Cells	101, 440
CLB Flip-Flops	126, 800
Block RAM	4, 860 Kbits
DSP Slices	240
On-Chip ADC	Yes
System Clock	100 MHz
USB-UART Bridge	Yes
USB Host	Yes
USB HID	Yes
MicroSD Card Connector	Yes
Pmod Connectors	4
XADC Header	Yes
User LEDs	16
User Pushbuttons	5
User Switches	16
7-Segment Displays	8
HDMI Sink	No
HDMI Source	No
Ethernet Speed	10/100 Mbps
Expansion Connectors	Pmod, XADC
Power Supply	USB
RAM	128 MB
Onboard Memory	16 MB

Summary

Key Features Overview

Artix-7 FPGA

Overview of the FPGA's programmable logic slices, LUTs, and flip-flops.

Functional Description and Power

Power Supplies

Describes how the Nexys A7 board is powered and its power circuitry.

Protection Circuitry

Details on overcurrent and overvoltage protection mechanisms on the board.

FPGA Configuration Methods

JTAG Configuration

How to program the FPGA using the JTAG interface via USB.

Quad-SPI Configuration

Programming the FPGA using the onboard Quad-SPI flash memory.

Onboard Memory

DDR2 Memory

Details on the 128MiB DDR2 SDRAM, its interface, and controller options.

Quad-SPI Flash Storage

Information on the non-volatile serial flash memory for configuration storage.

USB-UART Serial Communication

FT2232HQ Functionality

Details on the USB-UART bridge for serial communication with the FPGA.

VGA Video Output

VGA System Timing

Pmod Expansion Ports

Pmod Connector Details

Dual Analog/Digital Pmod (JXADC)

MicroSD Card Interface

SD Card Interface

Hardware Self-Test

Demo Configuration Overview

How the onboard demo configuration verifies hardware components.