Altera Serial Digital Interface (SDI) MegaCore Function - Manual (Page 50)

3–20 Chapter 3: Functional Description
Block Description
Serial Digital Interface (SDI) MegaCore Function February 2013 Altera Corporation
User Guide
For all other standards, use an external multiplexer to select between the alternative
reference clocks.
Table 3–7 lists the frequencies of the transmitter clock, tx_serial_refclk, for
Arria GX, Arria II GX, Arria V, Cyclone IV GX, Cyclone V, Stratix II GX, Stratix IV, and
Stratix V devices.
Table 3–7. Transmitter Clock Frequency—Arria GX, Arria II GX, Arria V, Cyclone IV GX,
Cyclone V, Stratix II GX, Stratix IV, and Stratix V Devices
Video Standard Clock Frequency (MHz)
SD-SDI 67.5
HD-SDI (including dual link) 74.175/74.25 (1)
HD-SDI with two times oversample 148.35/148.5 (1)
Dual standard 67.5/74.175/74.25 (1)
Triple standard 148.35/148.5 (1)
3G-SDI 148.35/148.5 (1)
Note to Table 3–7 :
(1) The tx_serial_refclk signal must be externally multiplexed. If additional input reference clock port is enabled
for serial reference clock, external multiplier is no longer required.