The SelectMAP mode multiple device option uses an external processor or controller to provide the clock, read/write enable, data, chip selects, and busy signals for each Versal ACAP device. The separate chip select and busy signals allow for flow control to boot and configure multiple Versal ACAPs with different images. As shown in the following figure, this high-bandwidth multiple device interface spans multiple banks. The PMC MIO bank0 and bank1 on both Versal ACAPs must be powered at the same voltage. Performance, bank voltage, and MIO usage should be evaluated when selecting the boot mode.
Figure 1. SelectMAP Multiple Device Interface Example