Merge pull request #313 from cklarhorst/master

Add MT46H128M16 and change bankmaschine to not use A10 for col addresses.

Author: enjoy-digital

litedram/core/bankmachine.py

@@ -34,7 +34,10 @@ def row(self, address):
 
     def col(self, address):
         split = self.colbits - self.address_align
-        return Cat(Replicate(0, self.address_align), address[:split])
+        if self.colbits>10: # A10 is reserved for auto-precharge, this bit needs to be skipped for col addresses
+            return Cat(Replicate(0, self.address_align), address[:10-self.address_align], 0, address[10-self.address_align:split])
+        else:
+            return Cat(Replicate(0, self.address_align), address[:split])
 
 # BankMachine --------------------------------------------------------------------------------------
 

litedram/modules.py

@@ -590,6 +590,14 @@ class MT46H64M16(LPDDRModule):
     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 MT46H128M16(LPDDRModule):
+    # geometry
+    nbanks = 4
+    nrows  = 16384
+    ncols  = 2048
+    # 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):
     # geometry