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common/DQSPattern: add transmission order, minor simplification on USDDRPHY.

This commit is contained in:
Florent Kermarrec 2020-10-02 12:26:57 +02:00
parent 16480d9aed
commit 329c9904f7
2 changed files with 3 additions and 1 deletions
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2
litedram/common.py
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@ -156,6 +156,8 @@ class DQSPattern(Module):
# # # # # #
# DQS Pattern transmitted as LSB-first.
self.comb += [ self.comb += [
self.o.eq(0b01010101), self.o.eq(0b01010101),
If(self.preamble, If(self.preamble,

2
litedram/phy/usddrphy.py
View File

@ -267,7 +267,7 @@ class USDDRPHY(Module, AutoCSR):
i_CLK = ClockSignal("sys4x"), i_CLK = ClockSignal("sys4x"),
i_CLKDIV = ClockSignal(), i_CLKDIV = ClockSignal(),
i_T = ~dqs_oe_delay.output, i_T = ~dqs_oe_delay.output,
i_D = Cat(*[dqs_pattern.o[n] for n in range(8)]), i_D = dqs_pattern.o,
o_OQ = dqs_nodelay, o_OQ = dqs_nodelay,
o_T_OUT = dqs_t, o_T_OUT = dqs_t,