SPI Configuration Read Commands - SPI Configuration Read Commands - UG860

Spartan UltraScale+ FPGAs Configuration User Guide (UG860)

Document_ID
UG860
Release_Date
2026-07-27
Revision
v1.3 English
The master SPI configuration mode supports the SPI flash device read operations listed in the following table.
Table 1. SPI Configuration Read Commands
Configuration Mode Data Width Read Mode Command Code (hex) Dummy Cycles
SPI_24 1 Normal Read (3-Byte or 24-bit addressing) 03 -
SPI_24 2 Dual Output Fast Read (3-Byte or 24-bit addressing) 3B 8
SPI_24 4 Quad Output Fast Read (3-Byte or 24-bit addressing) 6B 8
SPI_32 1 Normal Read (4-Byte or 32-bit addressing) 13 -
SPI_32 2 Dual Output Fast Read (4-Byte or 32-bit addressing) 3C 8
SPI_32 4 Quad Output Fast Read (4-Byte or 32-bit addressing) 6C 8