The Enable Dual Quad Mode parameter is applicable only (AMD UltraScale™ and future devices) in following configuration of the IP core.
- Master mode
- STARTUP enabled
- SPI mode is QUAD
- Number of slaves is 2
When this parameter is enabled, the IP core has two SPI interfaces. IP is connected to two flashes/SPI slave devices as shown in the following figure.
Figure 1. Dual Quad Mode
Traffic to SPI slaves can be controlled using the slave select register (SPISSR).