New and Updated Design Assistant Rules for 22.4 Release

Newly Added Design Assistant Rules

No newly added rules for 22.4 release.

Updated Design Assistant Rules

Power Up Don't Care Setting May Prevent Retiming
Embedded Memory Blocks with Initialized Content That Might be Modified Before the FPGA Enters User Mode
Registers Not Reachable from Reset Release IP
Asynchronous Reset is Insufficiently Synchronized
Endpoints of Paths Failing Setup Analysis with Retiming Restrictions
Endpoints of Paths Failing Setup Analysis with Explicit Power-Up States that Restrict Retiming
Paths Failing Setup Analysis with High Routing Delay due to Congestion
Paths Failing Setup Analysis with High Routing Delay Added for Hold
DSP Blocks with Restricted Fmax below Required Fmax
RAM Blocks with Restricted Fmax below Required Fmax
Hierarchical Tree Duplication was Shallower than Possible
Hierarchical Tree Duplication was Shallower than Requested

CDC-50001: 1-Bit Asynchronous Transfer Not Synchronized
CDC-50002: 1-Bit Asynchronous Transfer with Insufficient Constraints
CDC-50003: CE-Type CDC Transfer with Insufficient Constraints
CDC-50004: MUX-type CDC Transfer with Insufficient Constraints
CDC-50005: CDC Bus Constructed with Multi-bit Synchronizer Chains of Different Lengths
CDC-50006: CDC Bus Constructed with Unsynchronized Registers
CDC-50007: CDC Bus Constructed with Multi-bit Synchronizer Chains with Insufficient Constraints
CDC-50008: CDC Bus Constructed with Multi-bit Synchronizer Chains
CDC-50011: Combinational Logic Before Synchronizer Chain
CDC-50012: Multiple Clock Domains Driving a Synchronizer Chain
CDC-50101: Intra-Clock False Path Synchronizer
CDC-50102: Synchronizer after CDC Topology with Control Signal
CDC-50103: Unsynchronized Intra-Clock Forced Synchronizer
CLK-30026: Missing Clock Assignment
CLK-30027: Multiple Clock Assignments Found
CLK-30028: Invalid Generated Clock
CLK-30029: Invalid Clock Assignments
CLK-30030: PLL Setting Violation
CLK-30031: Input Delay Assigned to Clock
CLK-30032: Improper Clock Targets
CLK-30033: Invalid Clock Group Assignment
CLK-30034: Clock Pairs Missing Logically Exclusive Clock Group Assignment
CLK-30035: Clock Pairs Missing Physically Exclusive Clock Group Assignment
CLK-30042: Incorrect Clock Group Type
FLP-10000: Physical RAM with Utilization Below Threshold
FLP-10100: Large Multipliers are Decomposed
FLP-10500: Non Driving Top Level Inputs Found
FLP-40001: Congested Placement Region
FLP-40002: Very Small Routing Regions
FLP-40003: Narrow Region
FLP-40005: Congested Routing Region
FLP-40006: Pipelining Registers That Might Be Recoverable
LNT-30010: Nets Driving both Reset and Clock Enable Signals
LNT-30011: Design Contains Combinational Loops
LNT-30017: Register Output Driving Its Own Asynchronous Control Signal Directly or Through Combinational Logic
LNT-30020: Same Signal Source Drives Synchronous and Asynchronous Ports of the Same Register
LNT-30021: Same Signal Source Drives More Than One Asynchronous Port of a Register
LNT-30022: Same Signal Source Drives Clock Port and Another Port of a Register
LNT-30023: Reset Nets with Polarity Conflict
LNT-30024: LUT With More Than 1 Input Driving Clock Pins
LNT-30025: LUT With More Than 1 Input Driving Asynchronous Pins
LNT-30026: LUT With More Than 1 Input Driving Primary Device Output Ports
PRJ-10000: INI Variables Used During Compile
PRJ-10001: INI Variables Set and Not Used During Compile
RDC-50001: Reconvergence of Multiple Asynchronous Reset Synchronizers in Different Reset Domains
RDC-50002: Reconvergence of Multiple Asynchronous Reset Synchronizers in a Common Reset Domain
RES-10201: Power Up Don't Care Setting May Prevent Retiming
RES-10202: Register Power-Up Settings Conflict with Device Settings
RES-10203: Registers with Initial Conditions
RES-10204: Reset Release Instance Count Check
RES-30132: Registers May Not Be Properly Reset
RES-30133: Embedded Memory Blocks with Initialized Content That Might be Modified Before the FPGA Enters User Mode
RES-30134: Registers Not Reachable from Reset Release IP
RES-50001: Asynchronous Reset Is Not Synchronized
RES-50002: Asynchronous Reset is Insufficiently Synchronized
RES-50003: Asynchronous Reset with Insufficient Constraints
RES-50004: Multiple Asynchronous Resets within Reset Synchronizer Chain
RES-50005: RAM Control Signals Driven by Flip-Flops with Asynchronous Clears
RES-50010: Reset Synchronizer Chains with Constant Output
RES-50101: Intra-Clock False Path Reset Synchronizer
TMC-10107: Maximum Fan-out for Signal
TMC-10115: High Fan-out Signal
TMC-20001: Timing Paths with Hold Slack Exceeding Threshold
TMC-20002: Timing Paths with Removal Slack Exceeding Threshold
TMC-20004: Timing Paths with Setup Slack Exceeding Threshold
TMC-20005: Timing Paths with Recovery Slack Exceeding Threshold
TMC-20006: Unregistered Partition Inputs
TMC-20007: Unregistered Paths Between Partitions
TMC-20010: Logic Level Depth
TMC-20011: Missing Input Delay Constraint
TMC-20012: Missing Output Delay Constraint
TMC-20013: Partial Input Delay
TMC-20014: Partial Output Delay
TMC-20015: Inconsistent Min-Max Delay
TMC-20016: Invalid Reference Pin
TMC-20017: Loops Detected
TMC-20018: Unsupported Latches Detected
TMC-20019: Partial Multicycle Assignment
TMC-20020: Invalid Multicycle Assignment
TMC-20021: Partial Min-Max Delay Assignment
TMC-20022: I/O Delay Assignment Missing Parameters
TMC-20023: Invalid Set Net Delay Assignment
TMC-20024: Synchronous Data Delay Assignment
TMC-20025: Ignored or Overridden Constraints
TMC-20026: Empty Collection Due To Unmatched Filter
TMC-20027: Collection Filter Matching Multiple Types
TMC-20050: RAM Control Signals Driven by LUTs or ALMs instead of DFFs
TMC-20051: RAM Control Signals Driven by High Fan-Out Net
TMC-20052: Paths with Post Synthesis Inferred Latches
TMC-20053: DSP Inputs Driven by High Fan-Out Net
TMC-20100: Latch Loops Detected
TMC-20200: Paths Failing Setup Analysis with Impossible Requirements
TMC-20201: Paths Failing Setup Analysis with High Clock Skew
TMC-20202: Paths Failing Setup Analysis with High Logic Delay
TMC-20203: Paths Failing Setup Analysis with High Fabric Interconnect Delay
TMC-20204: Endpoints of Paths Failing Setup Analysis with Retiming Restrictions
TMC-20205: Endpoints of Paths Failing Setup Analysis with Explicit Power-Up States that Restrict Retiming
TMC-20206: DSP Blocks with Unregistered Outputs that are the Source of Paths Failing Setup Analysis
TMC-20207: DSP Blocks with Unregistered Inputs that are the Destination of Paths Failing Setup Analysis
TMC-20208: RAM Blocks with Unregistered Outputs that are the Source of Paths Failing Setup Analysis
TMC-20209: Paths Failing Setup Analysis with High Routing Delay due to Congestion
TMC-20210: Paths Failing Setup Analysis with High Routing Delay Added for Hold
TMC-20212: Paths Failing Setup Analysis with Global Routing in Data Path
TMC-20213: Paths Failing Setup Analysis with Locally Routed Clock
TMC-20214: Buses with Incoming Paths Failing Setup Analysis with Multiple Sequential Adder Chains
TMC-20215: Buses with Incoming Paths Failing Setup Analysis with Multipliers Implemented in Logic
TMC-20216: Paths Failing Setup Analysis with Inferred-RAM Shift Register Endpoints
TMC-20217: Paths Failing Setup Analysis with Clock-As-Data
TMC-20219: DSP Blocks with Restricted Fmax below Required Fmax
TMC-20220: RAM Blocks with Restricted Fmax below Required Fmax
TMC-20221: Nodes Failing Minimum Pulse Width Due to Clock Pulse Collapse
TMC-20250: Paths Failing Setup Analysis within Platform Designer Interconnect
TMC-20251: Paths Failing Setup Analysis within Platform Designer Interconnect Burst Adapter
TMC-20312: Paths Failing Hold Analysis with Global Routing in Data Path
TMC-20313: Paths Failing Hold Analysis with Locally Routed Clock
TMC-20500: Hierarchical Tree Duplication was Shallower than Possible
TMC-20501: Hierarchical Tree Duplication was Shallower than Requested
TMC-20550: Automatically Selected Duplication Candidate Rejected for Placement Constraint
TMC-20551: Automatically Selected Duplication Candidate Likely Requires More Duplication
TMC-20552: User Selected Duplication Candidate was Rejected
TMC-20601: Registers with High Immediate Fan-Out Tension
TMC-20602: Registers with High Timing Path Endpoint Tension
TMC-20603: Registers with High Immediate Fan-Out Span
TMC-20604: Registers with High Timing Path Endpoint Span
TMC-20605: Register Wirelut FO Check
TMC-20712: Paths Failing Recovery Analysis with Global Routing in Data Path
TMC-20713: Paths Failing Recovery Analysis with Locally Routed Clock
TMC-20812: Paths Failing Removal Analysis with Global Routing in Data Path
TMC-20813: Paths Failing Removal Analysis with Locally Routed Clock
TMC-30041: Constraint with Invalid Clock Reference

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