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Refresh modes 1X, 2X and 4X - tRFC

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Éder F. Zulian
2018-07-03 11:24:06 +02:00
parent a787b7bb5b
commit 0ace967a67
18 changed files with 104 additions and 52 deletions
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README.md
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@@ -766,6 +766,10 @@ Below, the sub-configurations are listed and explained.
- "0": normal operation (refreshes enabled)
- ControllerCoreRefMode (unsigned int)
- Refresh mode. 1: 1X, 2: 2X, 4: 4X. Refresh period is tREFI, tREFI/2, tREFI/4, respectively. Number of rows per refresh affected accordingly.
The default refresh mode is fixed 1X mode where Refresh commands should be issued with the normal rate, i.e., tREFI. The duration of each refresh command is the normal refresh cycle time tRFC.
In 2X mode Refresh commands are issued to the DRAM at the double frequency (tREFI/2).
In 4X mode Refresh commands are issued to the DRAM at the quadruple frequency (tREFI/4).
There is a tRFC value for each mode that comes from the memory specification.
- *ControllerCoreForceMaxRefBurst* (boolean)
- "1": always postpone, resulting in a ControllerCoreMaxPostponedARCmd burst
- "0": normal operation