sayma: 1GSPS WIP

artiq/firmware/libboard_artiq/ad9154.rs

@@ -34,9 +34,9 @@ fn read(addr: u16) -> u8 {
 }
 
 // ad9154 mode 1
-// linerate 5Gbps or 6Gbps
+// linerate 10Gbps
-// deviceclock_fpga 125MHz or 150MHz
+// deviceclock_fpga 125MHz
-// deviceclock_dac 500MHz or 600MHz
+// deviceclock_dac 1000MHz
 
 struct JESDSettings {
     did: u8,
@@ -146,7 +146,7 @@ pub fn setup(dacno: u8, linerate: u64) -> Result<(), &'static str> {
 
     write(ad9154_reg::SPI_PAGEINDX, 0x3); // A and B dual
 
-    write(ad9154_reg::INTERP_MODE, 0x03); // 4x
+    write(ad9154_reg::INTERP_MODE, 0x01); // 2x
     write(ad9154_reg::MIX_MODE, 0);
     write(ad9154_reg::DATA_FORMAT, 0*ad9154_reg::BINARY_FORMAT); // s16
     write(ad9154_reg::DATAPATH_CTRL,

artiq/firmware/libboard_artiq/hmc830_7043.rs

@@ -157,7 +157,7 @@ pub mod hmc7043 {
         (false, FPGA_CLK_DIV,   0x10, true),   //  5: AMC_FPGA_SYSREF1
         (false, 0,              0x10, false),  //  6: unused
         (true,  FPGA_CLK_DIV,   0x10, true),   //  7: RTM_FPGA_SYSREF0
-        (true,  FPGA_CLK_DIV, 0x08, false),  //  8: GTP_CLK0_IN
+        (true,  FPGA_CLK_DIV/2, 0x08, false),  //  8: GTP_CLK0_IN
         (false, 0,              0x10, false),  //  9: unused
         (false, 0,              0x10, false),  // 10: unused
         (false, 0,              0x08, false),  // 11: unused / uFL
@@ -393,8 +393,6 @@ pub mod hmc7043 {
 pub fn init() -> Result<(), &'static str> {
     #[cfg(all(hmc830_ref = "125", rtio_frequency = "125.0"))]
     const DIV: (u32, u32, u32, u32) = (2, 32, 0, 1); // 125MHz -> 2.0GHz
-    #[cfg(all(hmc830_ref = "150", rtio_frequency = "150.0"))]
-    const DIV: (u32, u32, u32, u32) = (2, 32, 0, 1); // 150MHz -> 2.4GHz
 
     /* do not use other SPI devices before HMC830 SPI mode selection */
     hmc830::select_spi_mode();
@@ -406,7 +404,7 @@ pub fn init() -> Result<(), &'static str> {
     hmc830::check_locked()?;
 
     if hmc7043::get_id() == hmc7043::CHIP_ID {
-        error!("HMC7043 detected while in reset (board rework missing?)");
+        error!("HMC7043 detected while in reset");
     }
     hmc7043::enable();
     hmc7043::detect()?;

artiq/firmware/runtime/rtio_clocking.rs

@@ -119,19 +119,6 @@ fn setup_si5324_as_synthesizer() {
         bwsel  : 4,
         crystal_ref: true
     };
-    // 150MHz output, from crystal
-    #[cfg(all(rtio_frequency = "150.0", not(si5324_ext_ref)))]
-    const SI5324_SETTINGS: si5324::FrequencySettings
-        = si5324::FrequencySettings {
-        n1_hs  : 9,
-        nc1_ls : 4,
-        n2_hs  : 10,
-        n2_ls  : 33732,
-        n31    : 9370,
-        n32    : 7139,
-        bwsel  : 3,
-        crystal_ref: true
-    };
     // 100MHz output, from crystal. Also used as reference for Sayma HMC830.
     #[cfg(all(rtio_frequency = "100.0", not(si5324_ext_ref)))]
     const SI5324_SETTINGS: si5324::FrequencySettings

artiq/firmware/satman/main.rs

@@ -302,9 +302,7 @@ fn process_aux_packet(_repeaters: &mut [repeater::Repeater],
             #[cfg(has_ad9154)]
             let (succeeded, retval) = {
                 #[cfg(rtio_frequency = "125.0")]
-                const LINERATE: u64 = 5_000_000_000;
+                const LINERATE: u64 = 10_000_000_000;
-                #[cfg(rtio_frequency = "150.0")]
-                const LINERATE: u64 = 6_000_000_000;
                 match _reqno {
                     jdac_common::INIT => (board_artiq::ad9154::setup(_dacno, LINERATE).is_ok(), 0),
                     jdac_common::PRINT_STATUS => { board_artiq::ad9154::status(_dacno); (true, 0) },
@@ -419,19 +417,6 @@ fn hardware_tick(ts: &mut u64) {
     }
 }
 
-#[cfg(all(has_si5324, rtio_frequency = "150.0"))]
-const SI5324_SETTINGS: si5324::FrequencySettings
-    = si5324::FrequencySettings {
-    n1_hs  : 6,
-    nc1_ls : 6,
-    n2_hs  : 10,
-    n2_ls  : 270,
-    n31    : 75,
-    n32    : 75,
-    bwsel  : 4,
-    crystal_ref: true
-};
-
 #[cfg(all(has_si5324, rtio_frequency = "125.0"))]
 const SI5324_SETTINGS: si5324::FrequencySettings
     = si5324::FrequencySettings {

artiq/gateware/jesd204_tools.py

@@ -15,30 +15,26 @@ from jesd204b.core import JESD204BCoreTXControl
 
 
 class UltrascaleCRG(Module, AutoCSR):
-    linerate = int(6e9)
+    linerate = int(10e9)  # linerate = 20*data_rate*4/8 = data_rate*10
-    refclk_freq = int(150e6)
+    refclk_freq = int(250e6)
     fabric_freq = int(125e6)
 
-    def __init__(self, platform, use_rtio_clock=False):
+    def __init__(self, platform):
         self.jreset = CSRStorage(reset=1)
         self.refclk = Signal()
         self.clock_domains.cd_jesd = ClockDomain()
 
-        refclk2 = Signal()
         refclk_pads = platform.request("dac_refclk", 0)
         platform.add_period_constraint(refclk_pads.p, 1e9/self.refclk_freq)
         self.specials += [
-            Instance("IBUFDS_GTE3", i_CEB=0, p_REFCLK_HROW_CK_SEL=0b00,
+            Instance("IBUFDS_GTE3", i_CEB=0, p_REFCLK_HROW_CK_SEL=0b01,
                      i_I=refclk_pads.p, i_IB=refclk_pads.n,
-                     o_O=self.refclk, o_ODIV2=refclk2),
+                     o_O=self.refclk),
-            AsyncResetSynchronizer(self.cd_jesd, self.jreset.storage),
         ]
 
-        if use_rtio_clock:
         self.cd_jesd.clk.attr.add("keep")
         self.comb += self.cd_jesd.clk.eq(ClockSignal("rtio"))
-        else:
+        self.specials += AsyncResetSynchronizer(self.cd_jesd, self.jreset.storage)
-            self.specials += Instance("BUFG_GT", i_I=refclk2, o_O=self.cd_jesd.clk)
 
 
 PhyPads = namedtuple("PhyPads", "txp txn")
@@ -68,7 +64,7 @@ class UltrascaleTX(Module, AutoCSR):
             phys.append(phy)
 
         self.submodules.core = JESD204BCoreTX(
-            phys, settings, converter_data_width=64)
+            phys, settings, converter_data_width=128)
         self.submodules.control = JESD204BCoreTXControl(self.core)
         self.core.register_jsync(platform.request("dac_sync", dac))
 
@@ -92,7 +88,7 @@ class DDMTDEdgeDetector(Module):
 # See "Digital femtosecond time difference circuit for CERN's timing system"
 # by P. Moreira and I. Darwazeh
 class DDMTD(Module, AutoCSR):
-    def __init__(self, input_pads, rtio_clk_freq=150e6):
+    def __init__(self, input_pads, rtio_clk_freq=125e6):
         N = 64
         self.reset = CSRStorage(reset=1)
         self.locked = CSRStatus()

artiq/gateware/targets/metlino.py

@@ -52,7 +52,7 @@ class Master(MiniSoC, AMPSoC):
         add_identifier(self)
 
         platform = self.platform
-        rtio_clk_freq = 150e6
+        rtio_clk_freq = 125e6
 
         self.comb += platform.request("input_clk_sel").eq(1)
         self.comb += platform.request("filtered_clk_sel").eq(1)

artiq/gateware/targets/sayma_amc.py

@@ -193,7 +193,7 @@ class JDCGSAWG(Module, AutoCSR):
         self.submodules.jesd = jesd204_tools.UltrascaleTX(
             platform, sys_crg, jesd_crg, dac)
 
-        self.submodules.sawgs = [sawg.Channel(width=16, parallelism=4) for i in range(4)]
+        self.submodules.sawgs = [sawg.Channel(width=16, parallelism=8) for i in range(4)]
 
         for conv, ch in zip(self.jesd.core.sink.flatten(), self.sawgs):
             assert len(Cat(ch.o)) == len(conv)
@@ -210,26 +210,26 @@ class JDCGPattern(Module, AutoCSR):
         ramp = Signal(4)
         self.sync.rtio += ramp.eq(ramp + 1)
 
-        samples = [[Signal(16) for i in range(4)] for j in range(4)]
+        samples = [[Signal(16) for i in range(8)] for j in range(4)]
         self.comb += [
             a.eq(Cat(b)) for a, b in zip(
                 self.jesd.core.sink.flatten(), samples)
         ]
         # ch0: 16-step ramp with big carry toggles
-        for i in range(4):
+        for i in range(8):
             self.comb += [
                 samples[0][i][-4:].eq(ramp),
                 samples[0][i][:-4].eq(0x7ff if i % 2 else 0x800)
             ]
         # ch1: 50 MHz
         from math import pi, cos
-        data = [int(round(cos(i/12*2*pi)*((1 << 15) - 1)))
+        data = [int(round(cos(i/24*2*pi)*((1 << 15) - 1)))
-                for i in range(12)]
+                for i in range(24)]
         k = Signal(2)
         self.sync.rtio += If(k == 2, k.eq(0)).Else(k.eq(k + 1))
         self.comb += [
             Case(k, {
-                i: [samples[1][j].eq(data[i*4 + j]) for j in range(4)]
+                i: [samples[1][j].eq(data[i*8 + j]) for j in range(8)]
                 for i in range(3)
             })
         ]
@@ -249,7 +249,7 @@ class JDCGSyncDDS(Module, AutoCSR):
         self.sawgs = []
 
         ftw = round(2**len(self.coarse_ts)*9e6/600e6)
-        parallelism = 4
+        parallelism = 8
 
         mul_1 = Signal.like(self.coarse_ts)
         mul_2 = Signal.like(self.coarse_ts)
@@ -287,9 +287,7 @@ class Satellite(SatelliteBase):
     DRTIO satellite with local DAC/SAWG channels.
     """
     def __init__(self, jdcg_type, **kwargs):
-        SatelliteBase.__init__(self, 150e6,
+        SatelliteBase.__init__(self, identifier_suffix="." + jdcg_type, **kwargs)
-            identifier_suffix="." + jdcg_type,
-            **kwargs)
 
         platform = self.platform
 
@@ -323,8 +321,7 @@ class Satellite(SatelliteBase):
         self.submodules += phy
         rtio_channels.append(rtio.Channel.from_phy(phy))
 
-        self.submodules.jesd_crg = jesd204_tools.UltrascaleCRG(
+        self.submodules.jesd_crg = jesd204_tools.UltrascaleCRG(platform)
-            platform, use_rtio_clock=True)
         cls = {
             "sawg": JDCGSAWG,
             "pattern": JDCGPattern,

artiq/gateware/targets/sayma_rtm.py

@@ -297,7 +297,7 @@ def main():
     builder_args(parser)
     soc_sayma_rtm_args(parser)
     parser.add_argument("--rtio-clk-freq",
-        default=150, type=int, help="RTIO clock frequency in MHz")
+        default=125, type=int, help="RTIO clock frequency in MHz")
     parser.add_argument("--with-wrpll", default=False, action="store_true")
     parser.set_defaults(output_dir=os.path.join("artiq_sayma", "rtm"))
     args = parser.parse_args()