Intel® Stratix® 10 DX FPGA Development Kit User Guide

ID 683561
Date 9/25/2023
Public
Document Table of Contents

A.2.1.2. Power Sequence

The Intel® Stratix® 10 DX FPGA device requires proper power up and power down sequences.
Table 10.  Power Sequencing Groups
Group 1 Group 2 Group 3
VCCL/VCC (0.89)

VCCERAM (0.9)

VCCPLLDIG_SDM (0.9)

VCCRT_GXP (0.9)

VCCRT_GXE (0.9)

VCCRTPLL_GXE (0.9)

VCCFUSE_GXP (0.9)

VCCH_GXE (1.1)

VCCH_GXP (1.8)

VCCADC (1.8)

VCCPLL_SDM (1.8)

VCCAPLL (1.8)

VCCIO (2.5)

VCCIO (1.8)

VCCIO (1.2, 1.25, 1.35, 1.5, 1.8)

VCCFUSEWR_SDM (2.4)

VCCN_SDM (1.8)

VCCIO3 (1.5, 1.8, 2.5, 3.0)

  • Required power up sequence: Group 1 > Group 2 > Group 3
  • Required power down sequence: Group 3 > Group 2 > Group 1
  • I/O pins are tri-stated during power-up or down sequence when the proper power sequence is followed. I/O pins should not be driven externally during this time or excess I/O pin current can result.
  • Power supplies in each group can be ramped up in any order.
  • The total power supply ramp-down time must not exceed 100 ms.
  • Ramp-up the last power supply of Group 1 to 90% (0.72) before ramping up the Group 2 supplies. Ramp up the last power supply of Group 2 to 90% (1.62V) before ramping up the Group 3 supplies.
  • VCCBAT_SDM can be powered up anytime.
  • To use CvP/autonomous hard IP, the total time must be within 10 ms, from the first power supply ramp-up to the last power supply ramp-up.
    Note: The POR delay time in Intel® Stratix® 10 DX FPGA is always within 2ms.
  • VCCL and VCC should be tied together at customer board.
  • VCCPLL_HPS and VCCPLL_SDM should be tied together at customer board.
  • VCCPLLDIG_SDM and VCCERAM should be tied together at customer board with a filter.
  • VCCADC and VCCA should be tied together at customer board with or without a filter.
  • VCCERT, VCCERT_PLL and VCCERAM should be tied together at customer board with or without a filter and should ramp up together for better current control.
    • Noise mask specifications must be met.
    • Use of an LC Filter is proposed to enable sourcing VCCERT, VCCERT_PLL from VCCERAM.
  • VCCN_SDM has to stay in Group 3. It cannot be moved to Group 2 or merged with any Group 2 regulator.
  • VCCFUSE_GXP is always connected to VCCERAM on customer board. For only internal testing purposes, VCCFUSE_GXP is connected to VCCR.
  • All power rails must ramp up monotonically.
  • All power rails must ramp up to full rail in Tramp specified in the Intel® Stratix® 10 Device Datasheet.
  • Ensure (VCCIO - VCCPT) is less than 1.92 to avoid damage to the device
  • Hot socket is not supported in Intel® Stratix® 10 DX FPGA.
Figure 35. Power Sequence Flow Diagram