Altera Serial Digital Interface (SDI) MegaCore Function - Manual (Page 66)

3–36 Chapter 3: Functional Description
Block Description
Serial Digital Interface (SDI) MegaCore Function February 2013 Altera Corporation
User Guide
Reset Requirement During Reconfiguration
When a receiver, placed in the same channel with a transmitter, detects a video format
change, the receiver goes through a reset sequence for reconfiguration. However, as
both the receiver and transmitter work independently, the IP core does not reset the
transmitter during the receiver reconfiguration. If you require the transmitter to go
through a reset sequence, you can reset it externally.
To reset the transmitter externally, you must instantiate a separate transmitter and
receiver at the Interface Settings option. Then, connect the SDI_START_RECONFIG
signal from the receiver instance to the rst input port in the corresponding
transmitter instance, while the dynamic reconfiguration controller reconfigures the
receiver, refer to
Figure 3–24 .
Figure 3–24. Resetting Transmitter Externally During Receiver Reconfiguration
Receiver Instance
(SDI MegaCore)
sdi_reset
SDI_START_RECONFIG
rst
rst
Receiver and Transmitter in One Channel
Transmitter Instance
(SDI MegaCore)