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gateware: Add sys_clk_double clk domain

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linuswck 2025-01-09 16:53:00 +08:00
parent 7eb4cbb0aa
commit bec032ab75
1 changed files with 6 additions and 1 deletions
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7
fast-servo/linien-gateware/fast_servo_soc.py
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@ -51,6 +51,7 @@ class CRG(Module):
clk_feedback_buf = Signal() clk_feedback_buf = Signal()
clk_sys = Signal() clk_sys = Signal()
clk_sys_double = Signal()
clk_idelay = Signal() clk_idelay = Signal()
self.specials += [ self.specials += [
@ -76,6 +77,10 @@ class CRG(Module):
p_CLKOUT1_PHASE=0.0, p_CLKOUT1_PHASE=0.0,
p_CLKOUT1_DUTY_CYCLE=0.5, p_CLKOUT1_DUTY_CYCLE=0.5,
o_CLKOUT1=clk_idelay, # 200 MHZ <- 2 * sys_clk = 2*100 MHz o_CLKOUT1=clk_idelay, # 200 MHZ <- 2 * sys_clk = 2*100 MHz
p_CLKOUT2_DIVIDE=5,
p_CLKOUT2_PHASE=0.0,
p_CLKOUT2_DUTY_CYCLE=0.5,
o_CLKOUT2=clk_sys_double, # 200 MHZ <- 2 * sys_clk_double = 2*100 MHz
o_LOCKED=self.locked, o_LOCKED=self.locked,
) )
] ]
@ -83,7 +88,7 @@ class CRG(Module):
self.specials += Instance("BUFG", i_I=clk_feedback, o_O=clk_feedback_buf) self.specials += Instance("BUFG", i_I=clk_feedback, o_O=clk_feedback_buf)
self.specials += Instance("BUFG", i_I=clk_sys, o_O=self.cd_sys.clk) self.specials += Instance("BUFG", i_I=clk_sys, o_O=self.cd_sys.clk)
self.specials += Instance("BUFG", i_I=clk_idelay, o_O=self.cd_idelay.clk) self.specials += Instance("BUFG", i_I=clk_idelay, o_O=self.cd_idelay.clk)
self.specials += Instance("BUFG", i_I=clk_idelay, o_O=self.cd_sys_double.clk) self.specials += Instance("BUFG", i_I=clk_sys_double, o_O=self.cd_sys_double.clk)
# Ignore sys_clk to pll clkin path created by SoC's rst. # Ignore sys_clk to pll clkin path created by SoC's rst.