AD719X-ASDZ HDL project

Overview

The AD719x-ASDZ HDL project supports the EVAL-AD719xASDZ family, comprised of EVAL-AD7190ASDZ, EVAL-AD7193ASDZ and EVAL-AD7195ASDZ, each evaluation kit featuring its own chip, the AD7190, AD7193 and AD7195 respectively - 4.8 kHz ultralow noise 24-bit sigma-delta ADC, each with its own particularities.

The on-chip low noise gain stage means that signals of small amplitude can interface directly to the ADC. The internal clock option provides a compact solution for low BW requirements.

Supported boards

Supported devices

Supported carriers

Evaluation board	Carrier	Connector
EVAL-AD7190ASDZ	Cora Z7S	PMOD JA/Arduino shield
	DE10-Nano	Arduino shield
EVAL-AD7192ASDZ	Cora Z7S	PMOD JA/Arduino shield
	DE10-Nano	Arduino shield
EVAL-AD7193ASDZ	Cora Z7S	PMOD JA/Arduino shield
	DE10-Nano	Arduino shield
EVAL-AD7194ASDZ	Cora Z7S	PMOD JA/Arduino shield
	DE10-Nano	Arduino shield
EVAL-AD7195ASDZ	Cora Z7S	PMOD JA/Arduino shield
	DE10-Nano	Arduino shield

Block design

Block diagram

The data path and clock domains are depicted in the below diagram:

SPI connections

SPI type	SPI manager instance	SPI subordinate	CS
PS	SPI 0	AD719x	0

GPIOs

GPIO signal	Direction (from FPGA view)	HDL GPIO EMIO	Software GPIO (for Zynq-7000)
adc_syncn *	OUT	33	87
adc_spi_miso_rdyn	OUT	32	86

Legend

* - adc_syncn exists all the time on the DE10-Nano project, but on the Cora Z7S project it exists only when the project was built with ARDZ_PMOD_N=1 parameter (used when connecting the eval. board through the Arduino header)

Building the HDL project

The design is built upon ADI’s generic HDL reference design framework. ADI distributes the bit/elf files of these projects as part of the ADI Kuiper Linux. If you want to build the sources, ADI makes them available on the HDL repository. To get the source you must clone the HDL repository.

Cora Z7S

Linux/Cygwin/WSL

The default build configuration (ARDZ_PMOD_N=0) features the eval. boards connected to Cora Z7S through PMOD JA:

~$

cd hdl/projects/ad719x_asdz/coraz7s

~/hdl/projects/ad719x_asdz/coraz7s$

make

The other possible way to connect the supported boards to CoraZ7S, is through the Arduino header, for which the project needs to be built with the parameter ARDZ_PMOD_N=1.

The built project will be located at hdl/projects/ad719x_asdz/coraz7s/ARDZPMODN1.

~$

cd hdl/projects/ad719x_asdz/coraz7s

~/hdl/projects/ad719x_asdz/coraz7s$

make ARDZ_PMOD_N=1

DE10-Nano

Linux/Cygwin/WSL

The only configuration available is through the Arduino header, so this project is not parameterizable:

~$

cd hdl/projects/ad719x_asdz/de10nano

~/hdl/projects/ad719x_asdz/de10nano$

make

A more comprehensive build guide can be found in the Build an HDL project user guide.

Software considerations

The reference design when using the Arduino header, has an extra GPIO, compared to the other one — the SYNCN, which is used for synchronizing multiple devices.

Resources

More information

ADI HDL User guide

Support

Analog Devices, Inc. will provide limited online support for anyone using the reference design with ADI components via the EngineerZone FPGA reference designs forum.

For questions regarding the ADI Linux device drivers, device trees, etc. from our Linux GitHub repository, the team will offer support on the EngineerZone Linux software drivers forum.

For questions concerning the ADI No-OS drivers, from our No-OS GitHub repository, the team will offer support on the EngineerZone microcontroller No-OS drivers forum.

It should be noted, that the older the tools’ versions and release branches are, the lower the chances to receive support from ADI engineers.

IP name	Source code link	Documentation link
axi_sysid	library/axi_sysid	AXI System ID
sysid_rom	library/sysid_rom	AXI System ID