Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

How is the DTMF Generator output setup?

April 26, 2017DTMF generator output Setup

0

Posted

How is the DTMF Generator output setup?

1 Answer

0

Posted

• First place the MCU into the Normal Mode, high frequency mode. • Set the D_PWDN ([20h].0) to 1 to enable the DTMF Generator. The DTMF pins obtain a 1/2 VDD bias voltage. • Write a suitable value to the DTMFD ([21h]) register. • Set the TONE ([20h].2) register to 1 to enable the DTMF pins to transmit a DTMF output. • The output time of the DTMF Tone must be controlled by the program.