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I believe I am having troubles in setting the right Frequencies / global values for my Project. I am uprgrading to a Cypress - CY8C27443-24SXI and the Previous Chip's cpu clock ranged from 4.2MHz - 6.0MHz.
I am sending hi or low signals from my CY8C27443-24SXI to an analog multiplexer which I believe averaged to be roughly 2.5kHz
Any help with these would be appreciated, please let me know if anyone would like more info.
Thanks
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PSoC 1
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Might be easier to post the project and indicate what clock rates you want
where.
“File” Designer
“Archive Project”
Regards, Dana.
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Normally you start with the requirements you need for each components
clock and then try to, using a combination of Sysclck, VC!, VC2, VC3
dividers to generate what you need. Its a mental trial and error exercise.
Normally one starts with CPU clock at fastest, in this case 24 Mhz.
Your A/D wants (from datasheet)
The max sample rate is 6.25 ksps. So compute that and probably sue VC2 to get
the value needed.
On PSOC 1 Clocks -
http://www.cypress.com/?rID=2773 AN32200 - Clocks and Global Resources
Note the clock for the ADCIN PWM wants to be the same one you use for the Analog
column clock.
Regards, Dana.
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Some useful ref material -
http://www.cypress.com/?rID=2773 AN32200 - Clocks and Global Resources
http://www.cypress.com/?rID=2779 AN2219 - PSoC® 1 Selecting Analog Ground and Reference
http://www.cypress.com/?rID=2843 AN2096 - PSoC® 1 - Using the ADCINC ADC
http://www.cypress.com/?rID=2641 AN2239 - PSoC® 1 - Selecting The Right ADC
Regards, Dana.