Out-of-Band Signaling

Zynq UltraScale+ Device Technical Reference Manual (UG1085)

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2.4 English

The transceivers provide out-of-band (OOB) signaling, often used to send low-speed signals from the transmitter to the receiver while high-speed serial data transmission is not active. This is typically done when the link is in a powered-down state or has not yet been initialized. This benefits PCIe and SATA/SAS and QPI applications.

For more details on GTH transceivers, see UltraScale Architecture GTH Transceiver User Guide (UG576) [Ref 12] and for GTY transceivers, see UltraScale Architecture GTY Transceiver User Guide (UG578) [Ref 13].