projects: AD7616-SDZ: Added readme doc

Signed-off-by: Joyce Velasco <Joyce.Velasco@analog.com>

Author: jvelasc2

doc/sphinx/source/projects/adc/ad7616-sdz.rst

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+.. include:: ../../../../../projects/ad7616-sdz/README.rst

projects/ad7616-sdz/README.rst

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+AD7616-SDZ no-OS Example Project
+================================
+
+.. contents::
+    :depth: 3
+
+Supported Evaluation Boards
+---------------------------
+
+- :adi:`EVAL-AD7616SDZ`
+
+Overview
+--------
+
+The EVAL-AD7616SDZ evaluation board is designed to assess the
+performance of the AD7616 and AD7616-P dual, 16-bit, simultaneous
+sampling ADCs. These devices support up to 16 bipolar input channels
+with independently selectable ranges and operate from a single 5 V
+analog supply. Key features include high input impedance, analog input
+clamp protection, a first-order antialiasing filter, and an accurate
+on-chip reference. They offer up to 1 MSPS throughput per channel pair
+with 90.5 dB SNR, and up to 92 dB SNR with digital oversampling. The
+AD7616 supports both serial and parallel interfaces, while the AD7616-P
+supports only parallel. Additional capabilities include a flexible
+channel sequencer, burst mode, CRC, and compatibility with various
+digital communication protocols. The board is ideal for evaluating the
+ADCs in applications such as power-line monitoring, motor control,
+instrumentation, and data acquisition systems.
+
+Applications
+-------------
+
+- Power line monitoring
+- Protective relays
+- Multiphase motor control
+- Instrumentation and control systems
+- Data acquisition systems
+
+Hardware Specifications
+------------------------
+
+Power Supply Requirements
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The EVAL-AD7616SDZ evaluation board requires an external power supply
+via a DC barrel connector (J7) supporting 7V to 9V input to generate
+VCC and VDRIVE voltages. Optional external supplies can be connected
+through the VSUPPLY (5V to 10V) and VLOGIC (2.3V to 3.6V) connectors
+for analog and digital supply rails, respectively. Correct link
+configuration (as per Table 3 in the user guide) is necessary before
+powering the board in any mode, whether standalone or controlled 
+by a controller board.
+
+On-board Connector
+~~~~~~~~~~~~~~~~~~
+
+========= ===================================================
+Connector Function
+J1        Analog inputs (V0A to V3A)
+J2        Analog inputs (V4A to V7A)
+J3        Analog inputs (V0A to V3B)
+J4        Analog inputs (V4B to V7B)
+J5        Digital input/output pins for debug/standalone mode
+J6        External reference SMA input
+J7        External power connector, 7V to 9V DC input
+J8        External VDRIVE power connector
+J9        External VCC power connector
+J10       120-way connector for the EVAL-SDP-CB1Z
+========= ===================================================
+
+No-OS Build Setup
+-----------------
+
+Please see: `https://wiki.analog.com/resources/no-os/build`
+
+No-OS Supported Examples
+------------------------
+
+The initialization data used in the examples is taken out from the
+`Project Data Source Path <https://github.com/analogdevicesinc/no-OS/tree/a818345f34123bc16ab847d10ad23bd5f472e683/projects/ad7616-sdz/src>`__
+
+Basic example
+~~~~~~~~~~~~~
+
+The basic example code in the AD7616 no-OS project showcases the setup
+and data acquisition capabilities of the AD7616 ADC. Execution begins
+with enabling instruction and data caches. The hardware components are
+initialized using structures like ``spi_engine_init_param``,
+``axi_clkgen_init``, and ``no_os_pwm_init_param`` to configure SPI
+communication, clock generation, and PWM for data conversions. The
+``ad7616_setup()`` function initializes the AD7616 with these
+parameters. Data sampling varies based on the mode:
+``ad7616_read_data_parallel()`` or ``ad7616_read_data_serial()`` is used
+for parallel or serial mode, respectively. Data from channels A and B
+are printed, and caches are disabled post-capture. This example
+demonstrates the foundational operations of initializing and running the
+AD7616 in a no-OS environment.
+
+No-OS Supported Platforms
+-------------------------
+
+Xilinx
+~~~~~~~
+
+Hardware Used
+^^^^^^^^^^^^^^
+
+- EVAL-AD7616SDZ
+- ZedBoard
+
+Connections
+^^^^^^^^^^^
+
+Use short wires or, preferably, an **SDP‑I‑FMC interposer board** to
+connect the EVAL board to the ZedBoard’s FMC. Refer to this table for
+manual wiring:
+
+======================= ================ =====================
+EVAL‑AD7616SDZ (via J5) Function         ZedBoard (FMC LAxx)
+SCLK                    SPI Clock        FMC LA0 (example)
+SDI / MOSI              Serial In        FMC LA1
+DOUT0 / DOUT1 (MISO)    Serial Out       FMC LA2
+CNVST                   Start Conversion FMC LA3
+BUSY                    Conversion Busy  FMC LA4
+RESET                   Reset ADC        FMC LA5
+GND                     Ground           FMC GND
+VDRIVE                  I/O Voltage      FMC VIO (e.g., 2.5V)
+======================= ================ =====================
+
+Match logic levels (VIO) — either 3.3V or 2.5V — depending on ZedBoard
+I/O bank configuration.
+
+The ZedBoard is powered via its 12V barrel jack, while the
+EVAL-AD7616SDZ requires a separate 6V to 12V DC supply to its power jack,
+with both boards sharing a common ground for proper operation.
+
+Build Command
+^^^^^^^^^^^^^
+
+.. code-block:: bash
+
+   cp <SOME_PATH>/system_top.xsa .
+   # to delete current build
+   make reset
+   # to build the project
+   make
+   # to flash the code
+   make run