4.8.3. HPS Boot Flash Card
- Boot QSPI Flash
- Boot MicroSD
- Boot eMMC
These boot flash daughter cards are connected to the SDM bank of the Stratix® 10 FPGA. They are plugged into the Samtec SDM Flash connector.
| Feature | Description |
|---|---|
| Card Connector |
|
| Boot QSPI Flash Card |
|
| Boot MicroSD Card |
|
| Boot eMMC Card |
|
| Mechanical |
|
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.
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 Stratix® 10 SoC development kit.
CARD_PRSTn is pulled high on the motherboard and directly tie to GND on Boot Flash daughter cards.
| CARD_PRSTn | Status |
|---|---|
| 1 | No daughter card is plugged in |
| 0 | One daughter card is plugged in |
Power
There are two power rails drawn from motherboard through Samtec connector 3.3 V and 1.8 V.
| 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 |