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Altera_Forum
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11 years ago

Some of my PWM signals fed into CPLD chip are MISSING?

Hello, I connected my TI DSP TMS320LF2810's PWM signals output pins to the pins in Bank3 of my CPLD chip EPM1270F256. There are overall 6 PWM signals from DSP to CPLD chip. However, ther...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

No....those pins are not connected to Vcc or GND. Could be my CPLD chip's pin settings are not correct? Should that be " 3.3V schmitt trigger input", not the "3.3V-LVTTL" input?

I found that if I load no code to CPLD while loading my C code into DSP only, there are no active PWM signals from DSP to CPLD at all although my DSP is running and supposingly there should be PWM signals...