modules: add IS43TR16256A support.

2021-01-22 12:30:29 -07:00 · 2021-01-22 12:30:29 -07:00 · 537e118c6b
parent ab2423e3dd
commit 537e118c6b
1 changed files with 12 additions and 0 deletions
--- a/litedram/modules.py
+++ b/litedram/modules.py
@ -715,6 +715,18 @@ class IS43TR16128B(DDR3Module):
    }
    speedgrade_timings["default"] = speedgrade_timings["1600"]

+class IS43TR16256A(DDR3Module):
+    # geometry
+    nbanks = 8
+    nrows  = 32768
+    ncols  = 1024
+    # timings
+    technology_timings = _TechnologyTimings(tREFI=64e6/8192, tWTR=(4, 7.5), tCCD=(4, None), tRRD=(4, 6), tZQCS=(64, 80))
+    speedgrade_timings = {
+        "1600": _SpeedgradeTimings(tRP=13.75, tRCD=13.75, tWR=15, tRFC=(None, 260), tFAW=(None, 30), tRAS=35),
+    }
+    speedgrade_timings["default"] = speedgrade_timings["1600"]
+

 # DDR3 (SO-DIMM) -----------------------------------------------------------------------------------