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In my design, the stratix IV GX is used.
The stratix IV GT is used in the Altera development board which I can refer.
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Ok, thanks for the clarification.
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The transciever power supply is 1.5V in my design. Based on your advice, the AC couple mide will be used.
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What is "my design"? The Stratix IV GX design, or the Stratix IV GT kit?
In my constraints file for the GX kit I have:
# The GXB voltages can be selected by DIP switches on the boards, eg.
#
# VCCH = 1.4V (default) or 1.5V (reserved)
# VCCA = 2.5V or 3.0V (default)
#
# Quartus Assignments->Device, Operating Settings and Conditions,
# Voltage shows the default settings are 1.4V and 2.5V.
# Explicitly assign them per the DIP switch defaults.
#
set_global_assignment -name VCCH_GXBL_USER_VOLTAGE 1.4V
set_global_assignment -name VCCH_GXBR_USER_VOLTAGE 1.4V
set_global_assignment -name VCCA_L_USER_VOLTAGE 3.0V
set_global_assignment -name VCCA_R_USER_VOLTAGE 3.0V
And if I look at the Altera Stratix IV GT SI kit schematic, I see that VCCH = 1.4.
So why do you think it is 1.5V?
Cheers,
Dave
Honored Contributor
