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MODE Signal State | Boot Mode |
|---|---|
High or open | SD Card |
Low or connected to the ground | QSPI |
On-board Peripherals
32 MByte Quad SPI Flash Memory
On-board QSPI flash memory S25FL256S (U7) is used to store initial FPGA configuration. Besides FPGA configuration, remaining free flash memory can be used for user application and data storage. All four SPI data lines are connected to the FPGA allowing x1, x2 or x4 data bus widths. Maximum data rate depends on the selected bus width and clock frequency used.
| Note |
|---|
SPI Flash QE (Quad Enable) bit must be set to high or FPGA is unable to load its configuration from flash during power-on. By default this bit is set to high at the manufacturing plant. |
Processing System (PS) Peripherals
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Overview
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