Intel® Stratix® 10 SX SoC Development Kit User Guide

ID 683303
Date 6/02/2023
Document Table of Contents

4.8.3. HPS Boot Flash Card

The Intel® Stratix® 10 SoC Boot Flash daughter cards have four independent types as listed below
  • Boot QSPI Flash
  • Boot MicroSD
  • Boot eMMC
Attention: Boot eMMC Flash Card is sold separately and is not included in the development kit package.

These boot flash daughter cards are connected to the SDM bank of the Intel® Stratix® 10 FPGA. They are plugged into the Samtec SDM Flash connector.

Table 42.  Feature Summary
Feature Description
Card Connector
  • Samtec QSH-030 Series 60-pin connector on Boot Flash daughter cards side
  • Samtec QTH-030 Series 60-pin connector on the motherboard
Boot QSPI Flash Card
  • Micron 2 Gb 1.8V QSPI Flash
  • TPBGA-24 package
  • Compatible with Intel EPCQ-L devices
Boot MicroSD Card
  • 4-bit SD Card Data Bus
  • Standard MicroSD Card Socket
Boot eMMC Card
  • Micron 8 GB eMMC
  • VFBGA-153 package
  • 1.5" x 1"

Connector to Motherboard

To connect between the motherboard and Boot flash daughter card, Samtec QSH/QTH series connectors are used. Samtec QSH-030 60-pin connector is used on boot flash daughter cards while Samtec QTH-030 60-pin connector is at the motherboard side.

Figure 21. Samtec QSH-030
Figure 22. Samtec QTH-030

Card Identification

There is one CARD_PRSTn signal on the Boot Flash daughter cards to identify whether card is plugged in. This signal is connected to CPLD on the Intel® Stratix® 10 SoC development kit.

CARD_PRSTn is pulled high on the motherboard and directly tie to GND on Boot Flash daughter cards.

Table 43.  Card Identification
1 No daughter card is plugged in
0 One daughter card is plugged in


There are two power rails drawn from motherboard through Samtec connector 3.3 V and 1.8 V.

Table 44.  Card Identification
  Current @ 1.8 V (A) Current @ 3.3 V (A) Total Power (W)
MicroSD - 0.22 1.32
QSPI Flash 0.1 - 0.18
eMMC 0.1 0.05 0.35
Note: The power of MicroSD card is estimated at SDR25 (50 MHz).