DDR5 Transmit Configuration
The Transmit features of the DRAMs can be selected to provide selected patterns on a test lane and neighboring lanes. This function is used for many Transmitter test functions.
Generator Mode |
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LFSR, Serial |
Select pattern type to be transmitted from selected lane. |
Pattern |
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Prbs8, AltPrbs8, Clock, Zeros, InvPrbs8, InvAltPrbs8, InvClock, Ones |
Select pattern type to be transmitted from selected lane. Only available if Generator Mode is set to LFSR. |
Serial Pattern |
|
0xFF, hexadecimal value |
Select hexadecimal byte to be transmitted from selected lane. Only available if Generator Mode is set to Serial. |
Neighbor Pattern |
|
Prbs8, AltPrbs8, Clock, Zeros, InvPrbs8, InvAltPrbs8, InvClock, Ones |
Select pattern to be present on lanes that neighbor the selected lane within the same DRAM. Only available if Generator Mode is set to LFSR. |
Number of Neighbors |
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Zero, Two, Four, Six, AllOthers |
Specify how many neighbor lanes will be programmed to provide the neighbor pattern. Only available if Generator Mode is set to LFSR. |
Stagger Polarity |
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|
Specify to invert the polarity of neighbor lanes. |
Duty Cycle Q |
|
-7 to +7 |
Set DRAM register Duty Cycle Q value |
Duty Cycle IB |
|
-7 to +7 |
Set DRAM register Duty Cycle IB value |
Duty Cycle QB |
|
-7 to +7 |
Set DRAM register Duty Cycle QB value |
Start Transmit |
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|
Initiate procedure to begin transmitting the selected patterns on the specified lane. |
Change Settings |
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Reprograms the selected configuration on the same lane. |
Running Transmitter Operations
Transmitter initiation and changing transmitter settings take a few seconds to complete. During this time, progress messages and ending status are provided on the Command Log tab.
See Also