Agilex™ 7 General-Purpose I/O User Guide: M-Series

ID 772138
Date 10/07/2024
Public
Document Table of Contents

2.2.2. GPIO-B Buffer Behavior

Table 3.   GPIO-B Pins Guideline for Different Pin States
GPIO-B Pin State
Not turned on Powering up Fully powered up Configuration mode User mode Powering down

Either tri-state the pins or do not drive them with any external voltage.

  • Pin voltage must not exceed VCCIO_PIO or 1.2 V, whichever is lower. 4
  • After full VCCIO_PIO power up, the pins are tri-stated with weak pull-up enabled.

All pins are tri-stated with weak pull-up enabled.

All pins are tri-stated with weak pull-up enabled.

Valid data transactions can be initiated.

  • Pin voltage must not exceed VCCIO_PIO or 1.2 V, whichever is lower. 4
  • When the VCCIO_PIO and VCC power rails are powering down, the I/O pin signals measure between ground and the VCCIO_PIO voltage levels.
Note: After the Agilex™ 7 device fully powers up, the voltage levels for the GPIO-B pins must not exceed the DC input voltage (VI) value or the AC maximum allowed overshoot during transitions.
4 VCCIO_PIO refers to the real-time onboard voltage supply.