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Auto precharge is too pessimistic, it will wait on its own for a valid time to execute

This commit is contained in:
John Sully 2018-09-23 20:55:24 +02:00
parent 177d7393f9
commit 79b1421878
1 changed files with 2 additions and 2 deletions
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4
litedram/core/bankmachine.py
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@ -116,7 +116,7 @@ class BankMachine(Module):
self.comb += [ self.comb += [
If(cmd_buffer_lookahead.source.valid & cmd_buffer.source.valid, If(cmd_buffer_lookahead.source.valid & cmd_buffer.source.valid,
If(slicer.row(cmd_buffer_lookahead.source.addr) != slicer.row(cmd_buffer.source.addr), If(slicer.row(cmd_buffer_lookahead.source.addr) != slicer.row(cmd_buffer.source.addr),
auto_precharge.eq((track_close == 0) & precharge_allowed) auto_precharge.eq(track_close == 0)
) )
) )
] ]
@ -167,7 +167,7 @@ class BankMachine(Module):
track_close.eq(1) track_close.eq(1)
) )
fsm.act("AUTOPRECHARGE", fsm.act("AUTOPRECHARGE",
If(precharge_timer.done, If(precharge_timer.done & precharge_allowed,
NextState("TRP") NextState("TRP")
), ),
track_close.eq(1) track_close.eq(1)