High-Density I/O - 2023.2 English

Versal Adaptive SoC Design Guide (UG1273)

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2023.2 English

The low-performance I/O in Versal adaptive SoC are known as high-density I/O (HD I/O). The HD I/O support a subset of the UltraScale device component mode primitives through uncalibrated IDELAY, ODELAY, IDDR, and ODDR primitives known as I/O logic. HD I/O maintain the columnar I/O architecture found in previous devices.

The I/O planning flow for HD I/O is unchanged from previous architectures. You can continue to instantiate the I/O logic primitives in your HDL code. The tools support an XDC-based constraints flow for assigning PACKAGE_PIN constraints. As with previous architectures, you can drag and drop from the I/O Ports window onto the Package window. In addition, you can move I/O logic primitives between HD I/O banks and XPIO banks in the Versal adaptive SoC.

Important: The voltage ranges between XPIO and HD I/O do not overlap. XPIO supports a lower range of voltage than HD I/O. For the voltage limits for specific banks,see the data sheet for your device.