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Merge pull request #301 from Johnsel/arduino_mkrvidor4000 

Added AS4C4M16 for Arduino MKR Vidor 4000 support
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enjoy-digital 2022-03-28 14:16:38 +02:00 committed by GitHub
parent 05d3be476c f14577a147
commit 27939f2d0b
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1 changed files with 9 additions and 0 deletions
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litedram/modules.py
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@ -490,6 +490,15 @@ class MT48LC32M8(SDRModule):
technology_timings = _TechnologyTimings(tREFI=64e6/8192, tWTR=(2, None), tCCD=(1, None), tRRD=(None, 15))
speedgrade_timings = {"default": _SpeedgradeTimings(tRP=20, tRCD=20, tWR=15, tRFC=(None, 66), tFAW=None, tRAS=44)}
class AS4C4M16(SDRModule):
# geometry
nbanks = 4
nrows = 4096
ncols = 256
# timings
technology_timings = _TechnologyTimings(tREFI=64e6/4096, tWTR=(2, None), tCCD=(1, None), tRRD=(None, 14))
speedgrade_timings = {"default": _SpeedgradeTimings(tRP=22, tRCD=21, tWR=20, tRFC=(None, 63), tFAW=None, tRAS=42)}
class AS4C16M16(SDRModule):
# geometry
nbanks = 4