pll_fb = Signal()
pll = Signal(6)
self.specials.pll = Instance("PLL_ADV", p_SIM_DEVICE="SPARTAN6",
- p_BANDWIDTH="OPTIMIZED", p_COMPENSATION="INTERNAL",
- p_REF_JITTER=.01, p_CLK_FEEDBACK="CLKFBOUT",
- i_DADDR=0, i_DCLK=0, i_DEN=0, i_DI=0, i_DWE=0, i_RST=0, i_REL=0,
- p_DIVCLK_DIVIDE=1, p_CLKFBOUT_MULT=m*p//n, p_CLKFBOUT_PHASE=0.,
- i_CLKIN1=clk32b, i_CLKIN2=0, i_CLKINSEL=1,
- p_CLKIN1_PERIOD=1/f0, p_CLKIN2_PERIOD=0.,
- i_CLKFBIN=pll_fb, o_CLKFBOUT=pll_fb, o_LOCKED=pll_lckd,
- o_CLKOUT0=pll[0], p_CLKOUT0_DUTY_CYCLE=.5,
- o_CLKOUT1=pll[1], p_CLKOUT1_DUTY_CYCLE=.5,
- o_CLKOUT2=pll[2], p_CLKOUT2_DUTY_CYCLE=.5,
- o_CLKOUT3=pll[3], p_CLKOUT3_DUTY_CYCLE=.5,
- o_CLKOUT4=pll[4], p_CLKOUT4_DUTY_CYCLE=.5,
- o_CLKOUT5=pll[5], p_CLKOUT5_DUTY_CYCLE=.5,
- p_CLKOUT0_PHASE=0., p_CLKOUT0_DIVIDE=p//1,
- p_CLKOUT1_PHASE=0., p_CLKOUT1_DIVIDE=p//1,
- p_CLKOUT2_PHASE=0., p_CLKOUT2_DIVIDE=p//1,
- p_CLKOUT3_PHASE=0., p_CLKOUT3_DIVIDE=p//1,
- p_CLKOUT4_PHASE=0., p_CLKOUT4_DIVIDE=p//1, # sys
- p_CLKOUT5_PHASE=270., p_CLKOUT5_DIVIDE=p//1, # sys_ps
- )
+ p_BANDWIDTH="OPTIMIZED", p_COMPENSATION="INTERNAL",
+ p_REF_JITTER=.01, p_CLK_FEEDBACK="CLKFBOUT",
+ i_DADDR=0, i_DCLK=0, i_DEN=0, i_DI=0, i_DWE=0, i_RST=0, i_REL=0,
+ p_DIVCLK_DIVIDE=1, p_CLKFBOUT_MULT=m*p//n, p_CLKFBOUT_PHASE=0.,
+ i_CLKIN1=clk32b, i_CLKIN2=0, i_CLKINSEL=1,
+ p_CLKIN1_PERIOD=1/f0, p_CLKIN2_PERIOD=0.,
+ i_CLKFBIN=pll_fb, o_CLKFBOUT=pll_fb, o_LOCKED=pll_lckd,
+ o_CLKOUT0=pll[0], p_CLKOUT0_DUTY_CYCLE=.5,
+ o_CLKOUT1=pll[1], p_CLKOUT1_DUTY_CYCLE=.5,
+ o_CLKOUT2=pll[2], p_CLKOUT2_DUTY_CYCLE=.5,
+ o_CLKOUT3=pll[3], p_CLKOUT3_DUTY_CYCLE=.5,
+ o_CLKOUT4=pll[4], p_CLKOUT4_DUTY_CYCLE=.5,
+ o_CLKOUT5=pll[5], p_CLKOUT5_DUTY_CYCLE=.5,
+ p_CLKOUT0_PHASE=0., p_CLKOUT0_DIVIDE=p//1,
+ p_CLKOUT1_PHASE=0., p_CLKOUT1_DIVIDE=p//1,
+ p_CLKOUT2_PHASE=0., p_CLKOUT2_DIVIDE=p//1,
+ p_CLKOUT3_PHASE=0., p_CLKOUT3_DIVIDE=p//1,
+ p_CLKOUT4_PHASE=0., p_CLKOUT4_DIVIDE=p//1, # sys
+ p_CLKOUT5_PHASE=270., p_CLKOUT5_DIVIDE=p//1, # sys_ps
+ )
self.specials += Instance("BUFG", i_I=pll[4], o_O=self.cd_sys.clk)
self.specials += Instance("BUFG", i_I=pll[5], o_O=self.cd_sys_ps.clk)
self.specials += AsyncResetSynchronizer(self.cd_sys, ~pll_lckd)
self.specials += Instance("ODDR2", p_DDR_ALIGNMENT="NONE",
- p_INIT=0, p_SRTYPE="SYNC",
- i_D0=0, i_D1=1, i_S=0, i_R=0, i_CE=1,
- i_C0=self.cd_sys.clk, i_C1=~self.cd_sys.clk,
- o_Q=platform.request("sdram_clock"))
+ p_INIT=0, p_SRTYPE="SYNC",
+ i_D0=0, i_D1=1, i_S=0, i_R=0, i_CE=1,
+ i_C0=self.cd_sys.clk, i_C1=~self.cd_sys.clk,
+ o_Q=platform.request("sdram_clock"))
class BaseSoC(SDRAMSoC):
default_platform = "papilio_pro"
self.submodules.crg = _CRG(platform, clk_freq)
sdram_geom = lasmicon.GeomSettings(
- bank_a=2,
- row_a=12,
- col_a=8
+ bank_a=2,
+ row_a=12,
+ col_a=8
)
sdram_timing = lasmicon.TimingSettings(
- tRP=self.ns(15),
- tRCD=self.ns(15),
- tWR=self.ns(14),
- tWTR=2,
- tREFI=self.ns(64*1000*1000/4096, False),
- tRFC=self.ns(66),
- req_queue_size=8,
- read_time=32,
- write_time=16
+ tRP=self.ns(15),
+ tRCD=self.ns(15),
+ tWR=self.ns(14),
+ tWTR=2,
+ tREFI=self.ns(64*1000*1000/4096, False),
+ tRFC=self.ns(66),
+ req_queue_size=8,
+ read_time=32,
+ write_time=16
)
self.submodules.sdrphy = gensdrphy.GENSDRPHY(platform.request("sdram"))
self.register_sdram_phy(self.sdrphy.dfi, self.sdrphy.phy_settings, sdram_geom, sdram_timing)