Intel® MAX® 10 Power Management User Guide

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ID 683400
Date 5/27/2022
Public
Document Table of Contents
Document Table of Contents x
1. Intel® MAX® 10 Power Management Overview 2. Intel® MAX® 10 Power Management Features and Architecture 3. Power Management Controller Reference Design 4. Intel® MAX® 10 Power Management User Guide Archives 5. Document Revision History for the Intel® MAX® 10 Power Management User Guide
2. Intel® MAX® 10 Power Management Features and Architecture x
2.1. Power Supply Device Options 2.2. Power-On Reset Circuitry 2.3. Power Management Controller Scheme 2.4. Hot Socketing
2.1. Power Supply Device Options x
2.1.1. Single-Supply Device 2.1.2. Dual-Supply Device 2.1.3. Comparison of the Intel® MAX® 10 Power Supply Device Options 2.1.4. Power Supply Design
2.1.4. Power Supply Design x
2.1.4.1. Transient Current
2.2. Power-On Reset Circuitry x
2.2.1. Power Supplies Monitored and Not Monitored by the POR Circuitry 2.2.2. Instant-On Support
2.3. Power Management Controller Scheme x
2.3.1. Power Management Controller Architecture
2.3.1. Power Management Controller Architecture x
2.3.1.1. Internal Oscillator 2.3.1.2. I/O Buffer Power Down 2.3.1.3. Global Clock Gating
2.4. Hot Socketing x
2.4.1. Hot-Socketing Specifications 2.4.2. Hot-Socketing Feature Implementation
2.4.1. Hot-Socketing Specifications x
2.4.1.1. Drive Intel® MAX® 10 Devices Before Power Up 2.4.1.2. I/O Pins Remain Tri-stated During Power up
3. Power Management Controller Reference Design x
3.1. Clock Control Block 3.2. I/O Buffer 3.3. Internal Oscillator 3.4. Power Management Controller 3.5. Entering or Exiting Sleep Mode 3.6. Hardware Implementation and Current Measurement
3.4. Power Management Controller x
3.4.1. Entering State 3.4.2. Sleep State 3.4.3. Exiting State 3.4.4. Awake State
3.5. Entering or Exiting Sleep Mode x
3.5.1. Entering Sleep Mode 3.5.2. Exiting Sleep Mode 3.5.3. Timing Parameters
1. Intel® MAX® 10 Power Management Overview
2. Intel® MAX® 10 Power Management Features and Architecture
3. Power Management Controller Reference Design
4. Intel® MAX® 10 Power Management User Guide Archives
5. Document Revision History for the Intel® MAX® 10 Power Management User Guide

2.4.1.2. I/O Pins Remain Tri-stated During Power up

The output buffers of the Intel® MAX® 10 device are turned off during system power up or power down. The Intel® MAX® 10 device family does not drive out until the device is configured and working in recommended operating conditions. The I/O pins are tri-stated during power up or power down.

A possible concern for semiconductor devices in general regarding hot-socketing is the potential for latch up. Latch up can occur when electrical subsystems are hot-socketed into an active system. During hot-socketing, the signal pins may be connected and driven by the active system. This occurs before the power supply can provide current to the VCC of the device and ground planes. This condition can lead to latch up and cause a low-impedance path from VCC to ground in the device. As a result, the device extends a large amount of current, possibly causing electrical damage.

The design of the I/O buffers and hot-socketing circuitry ensures that the Intel® MAX® 10 device family is immune to latch up during hot-socketing.

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