Intel® Cyclone® 10 LP Core Fabric and General Purpose I/Os Handbook
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Visible to Intel only — GUID: qin1490542974300
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6.1.2.4. Passive Serial Multi-Device Configuration Using a Download Cable
You can also use a download cable to configure multiple Intel® Cyclone® 10 LP device configuration pins.
The download cable could be an Intel FPGA download cable or Intel FPGA Ethernet cable.
When a device completes configuration, its nCEO pin is released low to activate the nCE pin of the next device. Configuration automatically begins for the second device.