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resources:tools-software:sigmastudio:toolbox:sources:pulse [22 May 2018 11:12] – created Sanjeeva Reddyresources:tools-software:sigmastudio:toolbox:sources:pulse [02 Jun 2021 15:23] (current) – Rewrite of page; fix errors in frequency formula Joshua Berlin
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-=====     Pulse   =====  +=====     Voltage Controlled Pulse   =====  
  
 [[:resources:tools-software:sigmastudio:toolbox:sources|Click here to return to the Sources section.]] [[:resources:tools-software:sigmastudio:toolbox:sources|Click here to return to the Sources section.]]
  
-The Pulse block typically used for modulation applications, takes the control input from Pin0 and duty cycle input from pin1 and it generates the output pulse from pin2.+The Pulse block generates a pulse train with the values 0 and 1. There are two inputs to this cell: Frequency and Duty Cycle.
  
-The input pin0 value from zero to one vary the output signal time period(frequency) and the input pin1 value from zero to one vary the T-ON(Duty cycle) of the pulse . + 
-  +Frequency is an 8.24 number between 0 and 0.5. An input of 0 will create DC, and 0.5 will create Fs/2. 
-A tiny circle is used to round/unround the no of the samples in T-OFF period of pulse signal).+For example, at Fs = 48 kHz, a frequency input of 0.1 will create a 4.8 kHz pulse train. 
 + 
 +Duty cycle is an 8.24 number between 0 and 1, corresponding to 0% and 100%. 
 +A duty cycle of 0.6 will create a pulse train which has value 1 60% of the time. 
 + 
 + 
 +Note that since the Pulse block runs at a discrete sampling rate, exact frequency generation is not always possible. A mechanism called "Round Coefficients" approximates the requested frequency more closely by following some short pulses with longer pulses at the closest possible frequencies. 
 + 
 +The "Round Coefficients" feature is enabled/disabled with a small circle on the window. When the circle is BLUE, coefficients are rounded. When the circle is ORANGE, the rounding feature is disabled.
 {{ :resources:tools-software:sigmastudio:toolbox:sources:pulse.png?nolink|}} {{ :resources:tools-software:sigmastudio:toolbox:sources:pulse.png?nolink|}}
  
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 ===== Supported IC's===== ===== Supported IC's=====
-1. ADAU145x +ADAU145x and ADAU146x processors are supported.
  
 ===== Example  ====== ===== Example  ======
-The example shown below generates the 5KHz pulse with duty cycle 50% +The schematic below generates a 4.8 kHz pulse with 50% duty cycle. 
-{{ :resources:tools-software:sigmastudio:toolbox:sources:pulseexample1.png?nolink |}}+{{ :resources:tools-software:sigmastudio:toolbox:sources:pulse_sigmastudio_project.png?nolink |}} 
resources/tools-software/sigmastudio/toolbox/sources/pulse.txt · Last modified: 02 Jun 2021 15:23 by Joshua Berlin

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