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Merge pull request #283 from antmicro/add-rdimms 

modules: add other RDIMM modules
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enjoy-digital 2021-11-06 08:30:41 +01:00 committed by GitHub
parent 0eb59ebe88 021f243f6d
commit 78ff236ca7
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1 changed files with 24 additions and 2 deletions
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litedram/modules.py
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@ -1078,9 +1078,11 @@ class HMA82GR7DJR4N(DDR4RegisteredModule):
nrows = 131072 nrows = 131072
ncols = 1024 ncols = 1024
# timings # timings
technology_timings = _TechnologyTimings(tREFI=64e6/8192, tWTR=(4, 7.5), tCCD=(4, None), tRRD=(4, 4.9), tZQCS=(128, 80)) trefi = {"1x": 64e6/8192, "2x": (64e6/8192)/2, "4x": (64e6/8192)/4}
trfc = {"1x": (None, 350), "2x": (None, 260), "4x": (None, 160)}
technology_timings = _TechnologyTimings(tREFI=trefi, tWTR=(4, 7.5), tCCD=(4, 5), tRRD=(4, 4.9), tZQCS=(128, 80))
speedgrade_timings = { speedgrade_timings = {
"3200": _SpeedgradeTimings(tRP=13.75, tRCD=13.75, tWR=15, tRFC=416, tFAW=30, tRAS=32), "3200": _SpeedgradeTimings(tRP=13.75, tRCD=13.75, tWR=15, tRFC=trfc, tFAW=10, tRAS=32),
} }
speedgrade_timings["default"] = speedgrade_timings["3200"] speedgrade_timings["default"] = speedgrade_timings["3200"]
@ -1088,6 +1090,26 @@ class HMA84GR7DJR4N(HMA82GR7DJR4N): pass
# This module is similar to HMA82GR7DJR4N, with the exception that it is a dual-rank module. The rank number # This module is similar to HMA82GR7DJR4N, with the exception that it is a dual-rank module. The rank number
# can be specified in the PHY settings. # can be specified in the PHY settings.
class M393A2K40DB3(DDR4RegisteredModule):
# geometry
ngroupbanks = 4
ngroups = 4
nbanks = ngroups * ngroupbanks
nrows = 131072
ncols = 1024
# timings
trefi = {"1x": 64e6/8192, "2x": (64e6/8192)/2, "4x": (64e6/8192)/4}
trfc = {"1x": (None, 350), "2x": (None, 260), "4x": (None, 160)}
technology_timings = _TechnologyTimings(tREFI=trefi, tWTR=(4, 7.5), tCCD=(4, 5), tRRD=(4, 4.9), tZQCS=(128, 80))
speedgrade_timings = {
"3200": _SpeedgradeTimings(tRP=13.75, tRCD=13.75, tWR=15, tRFC=trfc, tFAW=10, tRAS=32),
}
speedgrade_timings["default"] = speedgrade_timings["3200"]
class M393A4K40DB3(M393A2K40DB3): pass
# This module is similar to M393A2K40DB3, with the exception that it is a dual-rank module. The rank number
# can be specified in the PHY settings.
# LPDDR4 ------------------------------------------------------------------------------------------- # LPDDR4 -------------------------------------------------------------------------------------------
class MT53E256M16D1(SDRAMModule): class MT53E256M16D1(SDRAMModule):