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modules: SDRAM: add IS42S16320 support 

The IS42S16320D-7TL 32Mx16 512Mb SDRAM chips
are used in Terasic DE1-SoC and Terasic DE2-115
FPGA development boards.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
This commit is contained in:
Antony Pavlov 2019-05-29 13:13:37 +03:00
parent 8e2df17747
commit 5c66547334
1 changed files with 11 additions and 0 deletions
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11
litedram/modules.py
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@ -103,6 +103,17 @@ class IS42S16160(SDRAMModule):
speedgrade_timings = {"default": _SpeedgradeTimings(tRP=20, tRCD=20, tWR=20, tRFC=(None, 70), tFAW=None, tRAS=None)}
class IS42S16320(SDRAMModule):
memtype = "SDR"
# geometry
nbanks = 4
nrows = 8192
ncols = 1024
# timings
technology_timings = _TechnologyTimings(tREFI=64e6/8192, tWTR=(2, None), tCCD=(1, None), tRRD=None)
speedgrade_timings = {"default": _SpeedgradeTimings(tRP=20, tRCD=20, tWR=20, tRFC=(None, 70), tFAW=None, tRAS=None)}
class MT48LC4M16(SDRAMModule):
memtype = "SDR"
# geometry