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Serial Loopback: Routes signals between the transmitter and the receiver.
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VOD: Specifies the voltage output differential of the transmitter buffer.
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Pre-emphasis tap:
— 1st pre: Specifies the amount of pre-emphasis on the pre-tap of the
transmitter buffer.
— 2nd pre: Specifies the amount of pre-emphasis on the second pre-tap of the
transmitter buffer.
— 1st post: Specifies the amount of pre-emphasis on the first post tap of the
transmitter buffer.
— 2nd post: Specifies the amount of pre-emphasis on the second post tap of the
transmitter buffer.
•
Equalizer: Specifies the AC gain setting for the receiver equalizer in four stage
mode.
•
DC gain: Specifies the DC gain setting for the receiver equalizer in four stage
mode.
•
VGA: Specifies the VGA gain value.
•
All PMA settings should be changed as given in the figure below:
Figure 25.
PMA Settings
6. Board Test System
UG-20046 | 2018.07.20
Intel
®
Stratix
®
10 GX FPGA Development Kit User Guide
78