MMCME3_ADV - 2024.1 English

UltraScale Architecture Libraries Guide (UG974)

Document ID
UG974
Release Date
2024-05-30
Version
2024.1 English

Primitive: Advanced Mixed Mode Clock Manager (MMCM)

  • PRIMITIVE_GROUP: CLOCK
  • PRIMITIVE_SUBGROUP: PLL
  • Families: UltraScale, UltraScale+

Introduction

The MMCME3 is a mixed signal block designed to support frequency synthesis, clock network deskew, and jitter reduction. The clock outputs can each have an individual divide, phase shift, and duty cycle based on the same VCO frequency. The MMCME3 also supports dynamic phase shifting and fractional divides.

Port Descriptions

Port Direction Width Function
CDDCREQ Input 1 Active-High request signal for dynamically changing output clock divide.
Clock Inputs: MMCM input clock(s). Connect CLKIN2 if input clock multiplexing feature is used.
CLKIN1 Input 1 Primary clock input.
CLKIN2 Input 1 Secondary clock input to dynamically switch the MMCM reference clock.
Clock Outputs: User configurable clock outputs that can be divided versions of the VCO phase outputs (user controllable) from 1 (bypassed) to 128. The output clocks are phase aligned to each other (unless phase shifted) and aligned to the input clock with a proper feedback configuration. The CLKOUT#B outputs are 180 degrees out of phase with the non-B outputs.
CLKOUT0 Output 1 CLKOUT0 output.
CLKOUT0B Output 1 User configurable clock outputs that can be divided versions of the VCO phase outputs (user controllable) from 1 (bypassed) to 128. The output clocks are phase aligned to each other (unless phase shifted) and aligned to the input clock with a proper feedback configuration. The CLKOUT#B outputs are 180 degrees out of phase with the non-B outputs.
CLKOUT1 Output 1 CLKOUT1 output.
CLKOUT1B Output 1 Inverted CLKOUT1 output.
CLKOUT2 Output 1 User configurable clock outputs that can be divided versions of the VCO phase outputs (user controllable) from 1 (bypassed) to 128. The output clocks are phase aligned to each other (unless phase shifted) and aligned to the input clock with a proper feedback configuration. The CLKOUT#B outputs are 180 degrees out of phase with the non-B outputs.
CLKOUT2B Output 1 Inverted CLKOUT2 output.
CLKOUT3 Output 1 CLKOUT3 output.
CLKOUT3B Output 1 Inverted CLKOUT3 output.
CLKOUT4 Output 1 CLKOUT4 output.
CLKOUT5 Output 1 CLKOUT5 output.
CLKOUT6 Output 1 CLKOUT6 output.
Control Ports: MMCM control ports.
CLKINSEL Input 1 Signal controls the state of the input MUX, High = CLKIN1, Low = CLKIN2.
PWRDWN Input 1 Powers down MMCM components, thus reducing power consumption when derived clocks are not in use for sustained periods of time. Upon release of PWRDWN, the MMCM must regain LOCK before use.
RST Input 1 Asynchronous reset signal. The MMCM will synchronously re-enable itself when this signal is released (i.e., MMCM re-enabled). A reset is required when the input clock conditions change (for example, frequency).
DRP Ports: Ports used when using the dynamic reconfigurable ports for reading and writing the configuration of the MMCM.
DADDR<6:0> Input 7 The dynamic reconfiguration address (DADDR) input bus provides a reconfiguration address for the dynamic reconfiguration. When not used, all bits must be assigned zeros.
DCLK Input 1 The DCLK signal is the reference clock for the dynamic reconfiguration port.
DEN Input 1 The dynamic reconfiguration enable (DEN) provides the enable control signal to access the dynamic reconfiguration feature. When the dynamic reconfiguration feature is not used, DEN must be tied Low.
DI<15:0> Input 16 The dynamic reconfiguration data input (DI) bus provides reconfiguration data. When not used, all bits must be set to zero.
DO<15:0> Output 16 The dynamic reconfiguration output bus provides MMCM data output when using dynamic reconfiguration.
DRDY Output 1 The dynamic reconfiguration ready output (DRDY) provides the response to the DEN signal for the MMCMs dynamic reconfiguration feature.
DWE Input 1 The dynamic reconfiguration write enable (DWE) input pin provides the write enable control signal to write the DI data into the DADDR address. When not used, it must be tied Low.
Dynamic Phase Shift Ports: Ports used when using the dynamic phase shift capability of the MMCM.
PSCLK Input 1 Phase shift clock.
PSDONE Output 1 Phase shift done.
PSEN Input 1 Phase shift enable.
PSINCDEC Input 1 Phase shift increment/decrement control.
Feedback: Required ports to form the feedback path for the MMCM phase alignment capabilities.
CLKFBIN Input 1 Feedback clock pin to the MMCM.
CLKFBOUT Output 1 Dedicated MMCM Feedback clock output.
CLKFBOUTB Output 1 Inverted CLKFBOUT.
Status Ports: MMCM status ports.
CDDCDONE Output 1 Acknowledge signal that output clock dynamic divide is done and the output is valid.
CLKFBSTOPPED Output 1 Status pin indicating that the feedback clock has stopped.
CLKINSTOPPED Output 1 Status pin indicating that the input clock has stopped.
LOCKED Output 1 An output from the MMCM that indicates when the MMCM has achieved phase alignment within a predefined window and frequency matching within a predefined PPM range. The MMCM automatically locks after power on, no extra reset is required. LOCKED will be deasserted if the input clock stops or the phase alignment is violated (for example, input clock phase shift). The MMCM must be reset after LOCKED is deasserted.

Design Entry Method

Instantiation Yes
Inference No
IP and IP Integrator Catalog Recommended

Available Attributes

Attribute Type Allowed Values Default Description
BANDWIDTH STRING "OPTIMIZED", "HIGH", "LOW" "OPTIMIZED" Specifies the MMCM programming algorithm affecting the jitter, phase margin and other characteristics of the MMCM.
CLKFBOUT_MULT_F 3 significant digit FLOAT 2.000 to 64.000 5.000 Specifies the amount to multiply all CLKOUT clock outputs if a different frequency is desired. This number, in combination with the associated CLKOUT#_DIVIDE value and DIVCLK_DIVIDE value, will determine the output frequency.
CLKFBOUT_PHASE 3 significant digit FLOAT -360.000 to 360.000 0.000 Specifies the phase offset in degrees of the clock feedback output. Shifting the feedback clock results in a negative phase shift of all output clocks to the MMCM.
CLKOUT0_DIVIDE_F 3 significant digit FLOAT 1.000 to 128.000 1.000 Specifies the amount to fractional divide the associated CLKOUT clock output if a different frequency is desired. This number in combination with the CLKFBOUT_MULT_F and DIVCLK_DIVIDE values will determine the output frequency.
COMPENSATION STRING "AUTO", "BUF_IN", "EXTERNAL", "INTERNAL", "ZHOLD" "AUTO" Clock input compensation. Should be set to AUTO. Defines how the MMCM feedback is configured.
  • "ZHOLD": Indicates that the MMCM is configured to provide a negative hold time at the I/O registers.
  • "INTERNAL": Indicates that the MMCM is using its own internal feedback path so no delay is being compensated.
  • "EXTERNAL": Indicates that a network external to the device is being compensated.
  • "BUF_IN": Indicates that the configuration does not match with the other compensation modes and no delay will be compensated. This is the case if a clock input is driven by a BUFG for instance.
DIVCLK_DIVIDE DECIMAL 1 to 106 1 Specifies the division ratio for all output clocks with respect to the input clock. Effectively divides the CLKIN going into the PFD.
STARTUP_WAIT STRING "FALSE", "TRUE" "FALSE" Delays configuration DONE signal from asserting until MMCM is locked.
CLKIN_PERIOD: Specifies the input period in ns to the MMCM CLKIN inputs. Resolution is down to the ps. For example, a value of 33.333 would indicate a 30 MHz input clock. This information is mandatory and must be supplied. CLKIN1_PERIOD relates to the input period on the CLKIN1 input, while CLKIN2_PERIOD relates to the input clock period on the CLKIN2 input.
CLKIN1_PERIOD FLOAT(nS) 0.000 to 100.000 0.000 Specifies the input period to the CLKIN1 in ns.
CLKIN2_PERIOD FLOAT(nS) 0.000 to 100.000 0.000 Specifies the input period to the CLKIN2 in ns.
CLKOUT0_DUTY_CYCLE - CLKOUT6_DUTY_CYCLE: Specifies the duty cycle of the associated CLKOUT output as a decimal number representing the percentage (i.e., 0.50 will generate a 50% duty cycle).
CLKOUT0_DUTY_CYCLE 3 significant digit FLOAT 0.001 to 0.999 0.500 Specifies the duty cycle for CLKOUT0.
CLKOUT1_DUTY_CYCLE 3 significant digit FLOAT 0.001 to 0.999 0.500 Specifies the duty cycle for CLKOUT1.
CLKOUT2_DUTY_CYCLE 3 significant digit FLOAT 0.001 to 0.999 0.500 Specifies the duty cycle for CLKOUT2.
CLKOUT3_DUTY_CYCLE 3 significant digit FLOAT 0.001 to 0.999 0.500 Specifies the duty cycle for CLKOUT3.
CLKOUT4_DUTY_CYCLE 3 significant digit FLOAT 0.001 to 0.999 0.500 Specifies the duty cycle for CLKOUT4.
CLKOUT5_DUTY_CYCLE 3 significant digit FLOAT 0.001 to 0.999 0.500 Specifies the duty cycle for CLKOUT5.
CLKOUT6_DUTY_CYCLE 3 significant digit FLOAT 0.001 to 0.999 0.500 Specifies the duty cycle for CLKOUT6.
CLKOUT0_PHASE - CLKOUT6_PHASE: Specifies the phase offset in degrees of the clock feedback output. Shifting the feedback clock results in a negative phase shift of all output clocks to the MMCM.
CLKOUT0_PHASE 3 significant digit FLOAT -360.000 to 360.000 0.000 Specifies the phase offset for CLKOUT0.
CLKOUT1_PHASE 3 significant digit FLOAT -360.000 to 360.000 0.000 Specifies the phase offset for CLKOUT1.
CLKOUT2_PHASE 3 significant digit FLOAT -360.000 to 360.000 0.000 Specifies the phase offset for CLKOUT2.
CLKOUT3_PHASE 3 significant digit FLOAT -360.000 to 360.000 0.000 Specifies the phase offset for CLKOUT3.
CLKOUT4_PHASE 3 significant digit FLOAT -360.000 to 360.000 0.000 Specifies the phase offset for CLKOUT4.
CLKOUT5_PHASE 3 significant digit FLOAT -360.000 to 360.000 0.000 Specifies the phase offset for CLKOUT5.
CLKOUT6_PHASE 3 significant digit FLOAT -360.000 to 360.000 0.000 Specifies the phase offset for CLKOUT6.
CLKOUT1_DIVIDE - CLKOUT6_DIVIDE: Specifies the amount to divide the associated CLKOUT clock output if a different frequency is desired. This number in combination with the CLKFBOUT_MULT_F and DIVCLK_DIVIDE values will determine the output frequency.
CLKOUT1_DIVIDE DECIMAL 1 to 128 1 Specifies the amount by which to divide CLKOUT1 to create a different frequency.
CLKOUT2_DIVIDE DECIMAL 1 to 128 1 Specifies the amount by which to divide CLKOUT2 to create a different frequency.
CLKOUT3_DIVIDE DECIMAL 1 to 128 1 Specifies the amount by which to divide CLKOUT3 to create a different frequency.
CLKOUT4_CASCADE STRING "FALSE", "TRUE" "FALSE" Cascades the output divider (counter) CLKOUT6 into the input of the CLKOUT4 divider for an output clock divider that is greater than 128, effectively providing a total divide value of 16,384.
CLKOUT4_DIVIDE DECIMAL 1 to 128 1 Specifies the amount by which to divide CLKOUT4 to create a different frequency.
CLKOUT5_DIVIDE DECIMAL 1 to 128 1 Specifies the amount by which to divide CLKOUT5 to create a different frequency.
CLKOUT6_DIVIDE DECIMAL 1 to 128 1 Specifies the amount by which to divide CLKOUT6 to create a different frequency.
Programmable Inversion Attributes: Specifies whether or not to use the optional inversions on specific pins for this component to change the active polarity of the pin function. When set to 1 on a clock input pin (CLKIN# or CLKFBIN), the phase is effectively shifted 180 degrees. When set to 1 on other pins, it changes the function to behave active-Low rather than active-High. If an external inverter is specified on one of these associated pins, the Vivado Design Suite will automatically set this attribute during the opt_design stage so that additional logic is not necessary for changing the input polarity.
IS_CLKFBIN_INVERTED BINARY 1'b0 to 1'b1 1'b0 Specifies whether or not to use the optional inversion on the CLKFBIN pin.
IS_CLKINSEL_INVERTED BINARY 1'b0 to 1'b1 1'b0 Specifies whether or not to use the optional inversion on the CLKINSEL pin.
IS_CLKIN1_INVERTED BINARY 1'b0 to 1'b1 1'b0 Specifies whether or not to use the optional inversion on the CLKIN1 pin.
IS_CLKIN2_INVERTED BINARY 1'b0 to 1'b1 1'b0 Specifies whether or not to use the optional inversion on the CLKIN2 pin.
IS_PSEN_INVERTED BINARY 1'b0 to 1'b1 1'b0 Specifies whether or not to use the optional inversion on the PSEN pin.
IS_PSINCDEC_INVERTED BINARY 1'b0 to 1'b1 1'b0 Specifies whether or not to use the optional inversion on the PSINCDEC pin.
IS_PWRDWN_INVERTED BINARY 1'b0 to 1'b1 1'b0 Specifies whether or not to use the optional inversion on the PWRDWN pin.
IS_RST_INVERTED BINARY 1'b0 to 1'b1 1'b0 Specifies whether or not to use the optional inversion on the RST pin.
REF_JITTER: Specifies the expected jitter on the CLKIN inputs to better optimize MMCM performance. A bandwidth setting of OPTIMIZED will attempt to choose the best parameter for input clocking when unknown. If known, then the value provided should be specified in terms of the UI percentage (the maximum peak to peak value) of the expected jitter on the input clock.
REF_JITTER1 3 significant digit FLOAT 0.000 to 0.999 0.010 Specifies the expected jitter on the CLKIN1.
REF_JITTER2 3 significant digit FLOAT 0.000 to 0.999 0.010 Specifies the expected jitter on the CLKIN2.
Spread Spectrum: Spread Spectrum Attributes.
SS_EN STRING "FALSE", "TRUE" "FALSE" Enables the spread spectrum feature for the MMCM. Used in conjunction with SS_MODE and SS_MOD_PERIOD attributes.
SS_MOD_PERIOD DECIMAL(nS) 4000 to 40000 10000 Specifies the spread spectrum modulation period (ns).
SS_MODE STRING "CENTER_HIGH", "CENTER_LOW", "DOWN_HIGH", "DOWN_LOW" "CENTER_HIGH" Controls the spread spectrum frequency deviation and the spread type.
USE_FINE_PS: Counter variable fine phase shift enable.
CLKFBOUT_USE_FINE_PS STRING "FALSE", "TRUE" "FALSE" Counter variable fine phase shift enable.
CLKOUT0_USE_FINE_PS STRING "FALSE", "TRUE" "FALSE" Counter variable fine phase shift enable.
CLKOUT1_USE_FINE_PS STRING "FALSE", "TRUE" "FALSE" Counter variable fine phase shift enable.
CLKOUT2_USE_FINE_PS STRING "FALSE", "TRUE" "FALSE" Counter variable fine phase shift enable.
CLKOUT3_USE_FINE_PS STRING "FALSE", "TRUE" "FALSE" Counter variable fine phase shift enable.
CLKOUT4_USE_FINE_PS STRING "FALSE", "TRUE" "FALSE" Counter variable fine phase shift enable.
CLKOUT5_USE_FINE_PS STRING "FALSE", "TRUE" "FALSE" Counter variable fine phase shift enable.
CLKOUT6_USE_FINE_PS STRING "FALSE", "TRUE" "FALSE" Counter variable fine phase shift enable.

VHDL Instantiation Template

Unless they already exist, copy the following two statements and paste them before the entity declaration.
Library UNISIM;
use UNISIM.vcomponents.all;

-- MMCME3_ADV: Advanced Mixed Mode Clock Manager (MMCM)
--             UltraScale
-- Xilinx HDL Language Template, version 2024.1

MMCME3_ADV_inst : MMCME3_ADV
generic map (
   BANDWIDTH => "OPTIMIZED",        -- Jitter programming (HIGH, LOW, OPTIMIZED)
   CLKFBOUT_MULT_F => 5.0,          -- Multiply value for all CLKOUT (2.000-64.000)
   CLKFBOUT_PHASE => 0.0,           -- Phase offset in degrees of CLKFB (-360.000-360.000)
   -- CLKIN_PERIOD: Input clock period in ns units, ps resolution (i.e., 33.333 is 30 MHz).
   CLKIN1_PERIOD => 0.0,
   CLKIN2_PERIOD => 0.0,
   CLKOUT0_DIVIDE_F => 1.0,         -- Divide amount for CLKOUT0 (1.000-128.000)
   -- CLKOUT0_DUTY_CYCLE - CLKOUT6_DUTY_CYCLE: Duty cycle for CLKOUT outputs (0.001-0.999).
   CLKOUT0_DUTY_CYCLE => 0.5,
   CLKOUT1_DUTY_CYCLE => 0.5,
   CLKOUT2_DUTY_CYCLE => 0.5,
   CLKOUT3_DUTY_CYCLE => 0.5,
   CLKOUT4_DUTY_CYCLE => 0.5,
   CLKOUT5_DUTY_CYCLE => 0.5,
   CLKOUT6_DUTY_CYCLE => 0.5,
   -- CLKOUT0_PHASE - CLKOUT6_PHASE: Phase offset for CLKOUT outputs (-360.000-360.000).
   CLKOUT0_PHASE => 0.0,
   CLKOUT1_PHASE => 0.0,
   CLKOUT2_PHASE => 0.0,
   CLKOUT3_PHASE => 0.0,
   CLKOUT4_PHASE => 0.0,
   CLKOUT5_PHASE => 0.0,
   CLKOUT6_PHASE => 0.0,
   -- CLKOUT1_DIVIDE - CLKOUT6_DIVIDE: Divide amount for CLKOUT (1-128)
   CLKOUT1_DIVIDE => 1,
   CLKOUT2_DIVIDE => 1,
   CLKOUT3_DIVIDE => 1,
   CLKOUT4_CASCADE => "FALSE",
   CLKOUT4_DIVIDE => 1,
   CLKOUT5_DIVIDE => 1,
   CLKOUT6_DIVIDE => 1,
   COMPENSATION => "AUTO",          -- AUTO, BUF_IN, EXTERNAL, INTERNAL, ZHOLD
   DIVCLK_DIVIDE => 1,              -- Master division value (1-106)
   -- Programmable Inversion Attributes: Specifies built-in programmable inversion on specific pins
   IS_CLKFBIN_INVERTED => '0',      -- Optional inversion for CLKFBIN
   IS_CLKIN1_INVERTED => '0',       -- Optional inversion for CLKIN1
   IS_CLKIN2_INVERTED => '0',       -- Optional inversion for CLKIN2
   IS_CLKINSEL_INVERTED => '0',     -- Optional inversion for CLKINSEL
   IS_PSEN_INVERTED => '0',         -- Optional inversion for PSEN
   IS_PSINCDEC_INVERTED => '0',     -- Optional inversion for PSINCDEC
   IS_PWRDWN_INVERTED => '0',       -- Optional inversion for PWRDWN
   IS_RST_INVERTED => '0',          -- Optional inversion for RST
   -- REF_JITTER: Reference input jitter in UI (0.000-0.999).
   REF_JITTER1 => 0.0,
   REF_JITTER2 => 0.0,
   STARTUP_WAIT => "FALSE",         -- Delays DONE until MMCM is locked (FALSE, TRUE)
   -- Spread Spectrum: Spread Spectrum Attributes.
   SS_EN => "FALSE",                -- Enables spread spectrum (FALSE, TRUE)
   SS_MODE => "CENTER_HIGH",        -- CENTER_HIGH, CENTER_LOW, DOWN_HIGH, DOWN_LOW
   SS_MOD_PERIOD => 10000,          -- Spread spectrum modulation period (ns) (4000-40000)
   -- USE_FINE_PS: Fine phase shift enable (TRUE/FALSE)
   CLKFBOUT_USE_FINE_PS => "FALSE",
   CLKOUT0_USE_FINE_PS => "FALSE",
   CLKOUT1_USE_FINE_PS => "FALSE",
   CLKOUT2_USE_FINE_PS => "FALSE",
   CLKOUT3_USE_FINE_PS => "FALSE",
   CLKOUT4_USE_FINE_PS => "FALSE",
   CLKOUT5_USE_FINE_PS => "FALSE",
   CLKOUT6_USE_FINE_PS => "FALSE"
)
port map (
   -- Clock Outputs outputs: User configurable clock outputs
   CLKOUT0 => CLKOUT0,           -- 1-bit output: CLKOUT0
   CLKOUT0B => CLKOUT0B,         -- 1-bit output: Inverted CLKOUT0.
   CLKOUT1 => CLKOUT1,           -- 1-bit output: Primary clock
   CLKOUT1B => CLKOUT1B,         -- 1-bit output: Inverted CLKOUT1
   CLKOUT2 => CLKOUT2,           -- 1-bit output: CLKOUT2
   CLKOUT2B => CLKOUT2B,         -- 1-bit output: Inverted CLKOUT2
   CLKOUT3 => CLKOUT3,           -- 1-bit output: CLKOUT3
   CLKOUT3B => CLKOUT3B,         -- 1-bit output: Inverted CLKOUT3
   CLKOUT4 => CLKOUT4,           -- 1-bit output: CLKOUT4
   CLKOUT5 => CLKOUT5,           -- 1-bit output: CLKOUT5
   CLKOUT6 => CLKOUT6,           -- 1-bit output: CLKOUT6
   -- DRP Ports outputs: Dynamic reconfiguration ports
   DO => DO,                     -- 16-bit output: DRP data
   DRDY => DRDY,                 -- 1-bit output: DRP ready
   -- Dynamic Phase Shift Ports outputs: Ports used for dynamic phase shifting of the outputs
   PSDONE => PSDONE,             -- 1-bit output: Phase shift done
   -- Feedback outputs: Clock feedback ports
   CLKFBOUT => CLKFBOUT,         -- 1-bit output: Feedback clock
   CLKFBOUTB => CLKFBOUTB,       -- 1-bit output: Inverted CLKFBOUT
   -- Status Ports outputs: MMCM status ports
   CDDCDONE => CDDCDONE,         -- 1-bit output: Clock dynamic divide done
   CLKFBSTOPPED => CLKFBSTOPPED, -- 1-bit output: Feedback clock stopped
   CLKINSTOPPED => CLKINSTOPPED, -- 1-bit output: Input clock stopped
   LOCKED => LOCKED,             -- 1-bit output: LOCK
   CDDCREQ => CDDCREQ,           -- 1-bit input: Request to dynamic divide clock
   -- Clock Inputs inputs: Clock inputs
   CLKIN1 => CLKIN1,             -- 1-bit input: Primary clock
   CLKIN2 => CLKIN2,             -- 1-bit input: Secondary clock
   -- Control Ports inputs: MMCM control ports
   CLKINSEL => CLKINSEL,         -- 1-bit input: Clock select, High=CLKIN1 Low=CLKIN2
   PWRDWN => PWRDWN,             -- 1-bit input: Power-down
   RST => RST,                   -- 1-bit input: Reset
   -- DRP Ports inputs: Dynamic reconfiguration ports
   DADDR => DADDR,               -- 7-bit input: DRP address
   DCLK => DCLK,                 -- 1-bit input: DRP clock
   DEN => DEN,                   -- 1-bit input: DRP enable
   DI => DI,                     -- 16-bit input: DRP data
   DWE => DWE,                   -- 1-bit input: DRP write enable
   -- Dynamic Phase Shift Ports inputs: Ports used for dynamic phase shifting of the outputs
   PSCLK => PSCLK,               -- 1-bit input: Phase shift clock
   PSEN => PSEN,                 -- 1-bit input: Phase shift enable
   PSINCDEC => PSINCDEC,         -- 1-bit input: Phase shift increment/decrement
   -- Feedback inputs: Clock feedback ports
   CLKFBIN => CLKFBIN            -- 1-bit input: Feedback clock
);

-- End of MMCME3_ADV_inst instantiation

Verilog Instantiation Template


// MMCME3_ADV: Advanced Mixed Mode Clock Manager (MMCM)
//             UltraScale
// Xilinx HDL Language Template, version 2024.1

MMCME3_ADV #(
   .BANDWIDTH("OPTIMIZED"),        // Jitter programming (HIGH, LOW, OPTIMIZED)
   .CLKFBOUT_MULT_F(5.0),          // Multiply value for all CLKOUT (2.000-64.000)
   .CLKFBOUT_PHASE(0.0),           // Phase offset in degrees of CLKFB (-360.000-360.000)
   // CLKIN_PERIOD: Input clock period in ns units, ps resolution (i.e., 33.333 is 30 MHz).
   .CLKIN1_PERIOD(0.0),
   .CLKIN2_PERIOD(0.0),
   .CLKOUT0_DIVIDE_F(1.0),         // Divide amount for CLKOUT0 (1.000-128.000)
   // CLKOUT0_DUTY_CYCLE - CLKOUT6_DUTY_CYCLE: Duty cycle for CLKOUT outputs (0.001-0.999).
   .CLKOUT0_DUTY_CYCLE(0.5),
   .CLKOUT1_DUTY_CYCLE(0.5),
   .CLKOUT2_DUTY_CYCLE(0.5),
   .CLKOUT3_DUTY_CYCLE(0.5),
   .CLKOUT4_DUTY_CYCLE(0.5),
   .CLKOUT5_DUTY_CYCLE(0.5),
   .CLKOUT6_DUTY_CYCLE(0.5),
   // CLKOUT0_PHASE - CLKOUT6_PHASE: Phase offset for CLKOUT outputs (-360.000-360.000).
   .CLKOUT0_PHASE(0.0),
   .CLKOUT1_PHASE(0.0),
   .CLKOUT2_PHASE(0.0),
   .CLKOUT3_PHASE(0.0),
   .CLKOUT4_PHASE(0.0),
   .CLKOUT5_PHASE(0.0),
   .CLKOUT6_PHASE(0.0),
   // CLKOUT1_DIVIDE - CLKOUT6_DIVIDE: Divide amount for CLKOUT (1-128)
   .CLKOUT1_DIVIDE(1),
   .CLKOUT2_DIVIDE(1),
   .CLKOUT3_DIVIDE(1),
   .CLKOUT4_CASCADE("FALSE"),
   .CLKOUT4_DIVIDE(1),
   .CLKOUT5_DIVIDE(1),
   .CLKOUT6_DIVIDE(1),
   .COMPENSATION("AUTO"),          // AUTO, BUF_IN, EXTERNAL, INTERNAL, ZHOLD
   .DIVCLK_DIVIDE(1),              // Master division value (1-106)
   // Programmable Inversion Attributes: Specifies built-in programmable inversion on specific pins
   .IS_CLKFBIN_INVERTED(1'b0),     // Optional inversion for CLKFBIN
   .IS_CLKIN1_INVERTED(1'b0),      // Optional inversion for CLKIN1
   .IS_CLKIN2_INVERTED(1'b0),      // Optional inversion for CLKIN2
   .IS_CLKINSEL_INVERTED(1'b0),    // Optional inversion for CLKINSEL
   .IS_PSEN_INVERTED(1'b0),        // Optional inversion for PSEN
   .IS_PSINCDEC_INVERTED(1'b0),    // Optional inversion for PSINCDEC
   .IS_PWRDWN_INVERTED(1'b0),      // Optional inversion for PWRDWN
   .IS_RST_INVERTED(1'b0),         // Optional inversion for RST
   // REF_JITTER: Reference input jitter in UI (0.000-0.999).
   .REF_JITTER1(0.0),
   .REF_JITTER2(0.0),
   .STARTUP_WAIT("FALSE"),         // Delays DONE until MMCM is locked (FALSE, TRUE)
   // Spread Spectrum: Spread Spectrum Attributes.
   .SS_EN("FALSE"),                // Enables spread spectrum (FALSE, TRUE)
   .SS_MODE("CENTER_HIGH"),        // CENTER_HIGH, CENTER_LOW, DOWN_HIGH, DOWN_LOW
   .SS_MOD_PERIOD(10000),          // Spread spectrum modulation period (ns) (4000-40000)
   // USE_FINE_PS: Fine phase shift enable (TRUE/FALSE)
   .CLKFBOUT_USE_FINE_PS("FALSE"),
   .CLKOUT0_USE_FINE_PS("FALSE"),
   .CLKOUT1_USE_FINE_PS("FALSE"),
   .CLKOUT2_USE_FINE_PS("FALSE"),
   .CLKOUT3_USE_FINE_PS("FALSE"),
   .CLKOUT4_USE_FINE_PS("FALSE"),
   .CLKOUT5_USE_FINE_PS("FALSE"),
   .CLKOUT6_USE_FINE_PS("FALSE")
)
MMCME3_ADV_inst (
   // Clock Outputs outputs: User configurable clock outputs
   .CLKOUT0(CLKOUT0),           // 1-bit output: CLKOUT0
   .CLKOUT0B(CLKOUT0B),         // 1-bit output: Inverted CLKOUT0.
   .CLKOUT1(CLKOUT1),           // 1-bit output: Primary clock
   .CLKOUT1B(CLKOUT1B),         // 1-bit output: Inverted CLKOUT1
   .CLKOUT2(CLKOUT2),           // 1-bit output: CLKOUT2
   .CLKOUT2B(CLKOUT2B),         // 1-bit output: Inverted CLKOUT2
   .CLKOUT3(CLKOUT3),           // 1-bit output: CLKOUT3
   .CLKOUT3B(CLKOUT3B),         // 1-bit output: Inverted CLKOUT3
   .CLKOUT4(CLKOUT4),           // 1-bit output: CLKOUT4
   .CLKOUT5(CLKOUT5),           // 1-bit output: CLKOUT5
   .CLKOUT6(CLKOUT6),           // 1-bit output: CLKOUT6
   // DRP Ports outputs: Dynamic reconfiguration ports
   .DO(DO),                     // 16-bit output: DRP data
   .DRDY(DRDY),                 // 1-bit output: DRP ready
   // Dynamic Phase Shift Ports outputs: Ports used for dynamic phase shifting of the outputs
   .PSDONE(PSDONE),             // 1-bit output: Phase shift done
   // Feedback outputs: Clock feedback ports
   .CLKFBOUT(CLKFBOUT),         // 1-bit output: Feedback clock
   .CLKFBOUTB(CLKFBOUTB),       // 1-bit output: Inverted CLKFBOUT
   // Status Ports outputs: MMCM status ports
   .CDDCDONE(CDDCDONE),         // 1-bit output: Clock dynamic divide done
   .CLKFBSTOPPED(CLKFBSTOPPED), // 1-bit output: Feedback clock stopped
   .CLKINSTOPPED(CLKINSTOPPED), // 1-bit output: Input clock stopped
   .LOCKED(LOCKED),             // 1-bit output: LOCK
   .CDDCREQ(CDDCREQ),           // 1-bit input: Request to dynamic divide clock
   // Clock Inputs inputs: Clock inputs
   .CLKIN1(CLKIN1),             // 1-bit input: Primary clock
   .CLKIN2(CLKIN2),             // 1-bit input: Secondary clock
   // Control Ports inputs: MMCM control ports
   .CLKINSEL(CLKINSEL),         // 1-bit input: Clock select, High=CLKIN1 Low=CLKIN2
   .PWRDWN(PWRDWN),             // 1-bit input: Power-down
   .RST(RST),                   // 1-bit input: Reset
   // DRP Ports inputs: Dynamic reconfiguration ports
   .DADDR(DADDR),               // 7-bit input: DRP address
   .DCLK(DCLK),                 // 1-bit input: DRP clock
   .DEN(DEN),                   // 1-bit input: DRP enable
   .DI(DI),                     // 16-bit input: DRP data
   .DWE(DWE),                   // 1-bit input: DRP write enable
   // Dynamic Phase Shift Ports inputs: Ports used for dynamic phase shifting of the outputs
   .PSCLK(PSCLK),               // 1-bit input: Phase shift clock
   .PSEN(PSEN),                 // 1-bit input: Phase shift enable
   .PSINCDEC(PSINCDEC),         // 1-bit input: Phase shift increment/decrement
   // Feedback inputs: Clock feedback ports
   .CLKFBIN(CLKFBIN)            // 1-bit input: Feedback clock
);

// End of MMCME3_ADV_inst instantiation

Related Information

  • UltraScale Architecture Clocking Resources User Guide (UG572)