3/22/2023 0 Comments Multiclock onlineAny time a HTML report is generated, the Clock Summary Report is also generated. The report also contains a table listing each user output signal and its associated clock enable output signal. In single clock mode, this report contains a table detailing the sample rates for each clock enable output signal. The file comment block in the HDL DUT code contains Clock Summary information. # HDL check for 'hdlcoder_clockdemo' complete with 0 errors, 0 warnings, and 1 messages.Ĭlock Summary Reporting in Single Clock Mode # Generating HTML files for code generation report at hdlcoder_clockdemo_codegen_rpt.html # Code Generation for 'hdlcoder_clockdemo' completed. # Generating package file hdlsrc/hdlcoder_clockdemo/DUT_pkg.vhd. # Working on hdlcoder_clockdemo/DUT as hdlsrc/hdlcoder_clockdemo/DUT.vhd. # Code Generation for 'DUT_tc' completed. # Working on DUT_tc as hdlsrc/hdlcoder_clockdemo/DUT_tc.vhd. # Begin VHDL Code Generation for 'DUT_tc'. # Begin VHDL Code Generation for 'hdlcoder_clockdemo'. # Applying HDL optimizations on the model 'hdlcoder_clockdemo'. # Begin compilation of the model 'hdlcoder_clockdemo'. # Running HDL checks on the model 'hdlcoder_clockdemo'. # Using the config set for model hdlcoder_clockdemo for HDL code generation parameters. # Generating HDL for 'hdlcoder_clockdemo/DUT'. The filter's input is also presented as an output for this example to present a model with output signals running at different rates. The first example uses a multirate CIC Interpolation filter in single clock mode. A multiple clock model may require multiple timing controllers. These out of phase signals are generated with a timing controller. Transitions between rates require clock enables at a given rate that are out of phase with that rate's clock. Each clock port corresponds to a separate rate in the model. In synchronous multiple clock mode, the generated code has a set of clock ports as primary inputs to the DUT. Each output signal rate is associated with a clock enable output signal that indicates the correct timing to sample the output data. Each generated clock enable is an integer multiple slower than the primary clock rate. The timing controller generates a set of clock enables with the necessary rate and phase information to control the clocking for the design. In single clock mode, if multiple rates exist in the Simulink model, a timing controller is created to control the clocking to the portions of the model that run at a slower rate. By default, HDL Coder creates an HDL design that uses a single clock port for the DUT. The other mode generates a synchronous primary clock input for each Simulink® rate in the DUT. One mode generates a single clock input to the Device Under Test (DUT). The J2150A has many uses including EMI, power supply and clock jitter testing, cable testing, EMC chamber characterization (for measurement consistency day‐to‐day, and comparing one chamber to another), a general purpose source for characterizing semi‐anechoic chambers and can work as an AWG substitute for transient step load testing.HDL Coder has two clocking modes. No external software is required for operation and the key is USB powered so its ultraportable. Several of the modes are “dithered” in pulse width and frequency, so as to help fill in the gaps between harmonic combs. The generator has five different frequency modes, from 1kHz to 8MHz. It’s also very useful as an EMC/EMI troubleshooting tool and can also help identify EMI resonances that may cause product compliance failures. The J2150A is a troubleshooting tool to help reveal resonances in power bus and power supply circuitry. Picotest has recently announced their USB multi-clock comb generator, the J2150A, designed to ferret out resonant sensitivities in your power delivery network (PDN).
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