Is it possible to use a DC-coupled connection with a transmitter in the Stratix IV GX (GT) device-to-device connection?
Possible, depending on the serial protocol being implemented.
For information on the circuit at the time of configuration, please refer to the Device Handbook at the URL link below.
Please search with the keyword "DC-Coupled Links" and check.
https://www.altera.com/en_US/pdfs/literature/hb/stratix-iv/stx4_siv52001.pdf
Please also check the Device Pin Connection Guidelines for precautions when configuring a DC-coupled link.
Stratix IV GX: https://www.altera.com/en_US/pdfs/literature/dp/stratix4/pcg-01005.pdf
Stratix IV GT: https://www.altera.com/en_US/pdfs/literature/dp/stratix4/pcg-01006.pdf
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