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add LPDDR module

This commit is contained in:
Christian Klarhorst 2021-11-25 14:18:05 +01:00
parent 78ff236ca7
commit 8226dca898
1 changed files with 10 additions and 0 deletions
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litedram/modules.py Normal file → Executable file
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@ -572,6 +572,16 @@ class MT46H32M16(LPDDRModule):
technology_timings = _TechnologyTimings(tREFI=64e6/8192, tWTR=(2, None), tCCD=(1, None), tRRD=None) technology_timings = _TechnologyTimings(tREFI=64e6/8192, tWTR=(2, None), tCCD=(1, None), tRRD=None)
speedgrade_timings = {"default": _SpeedgradeTimings(tRP=15, tRCD=15, tWR=15, tRFC=(None, 72), tFAW=None, tRAS=None)} speedgrade_timings = {"default": _SpeedgradeTimings(tRP=15, tRCD=15, tWR=15, tRFC=(None, 72), tFAW=None, tRAS=None)}
class MT46H64M16(LPDDRModule):
# geometry
nbanks = 4
nrows = 16384
ncols = 1024
# timings
technology_timings = _TechnologyTimings(tREFI=64e6/8192, tWTR=(2, None), tCCD=(1, None), tRRD=None)
speedgrade_timings = {"default": _SpeedgradeTimings(tRP=15, tRCD=15, tWR=15, tRFC=(None, 72), tFAW=None, tRAS=None)}
class MT46H32M32(LPDDRModule): class MT46H32M32(LPDDRModule):
# geometry # geometry
nbanks = 4 nbanks = 4