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Double check the usage of tRCD when exiting low power modes. #46

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efzulian opened this issue Oct 17, 2016 · 1 comment
Closed

Double check the usage of tRCD when exiting low power modes. #46

efzulian opened this issue Oct 17, 2016 · 1 comment

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@efzulian
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efzulian commented Oct 17, 2016

Double check the usage of tRCD (ACT to internal read or write delay time (?)) when exiting low power modes.

Note that this has influence on some variables that may be useless (e.g., latest_act_cycle).

@Sv3n
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Sv3n commented Oct 18, 2016

I've removed the RCD and the RP related entries in 1e767c9. Now I'm trying to see what to make of zero_guard(t.XPDLL - t.RCD - t.RP, "t.XPDLL - t.RCD - t.RP") and zero_guard(t.XPDLL - (2 * t.RCD), "t.XPDLL - (2 * t.RCD) < 0"). Both of these warnings trigger:

libdrampower-based window example output should match drampower output for DDR2-1066 with the window command trace ...
WARNING: t.XPDLL - t.RCD - t.RP
WARNING: t.XPDLL - (2 * t.RCD) < 0
WARNING: t.XPDLL - t.RCD - t.RP
WARNING: t.XPDLL - (2 * t.RCD) < 0
WARNING: t.XPDLL - t.RCD - t.RP
WARNING: last_pre_cycle is in the future
WARNING: t.XPDLL - t.RCD - t.RP
WARNING: t.XPDLL - (2 * t.RCD) < 0
WARNING: last_pre_cycle is in the future
WARNING: t.XPDLL - t.RCD - t.RP
WARNING: last_pre_cycle is in the future
WARNING: t.XPDLL - (2 * t.RCD) < 0
WARNING: last_pre_cycle is in the future
WARNING: t.XPDLL - t.RCD - t.RP
WARNING: last_pre_cycle is in the future

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