AVR-Chat

Hi Salam,

On 2 Jan 2004 at 12:00, Salam wrote:

> How can an AVR encode and decode DTMF tones  ??

You can encode DTMF in hardware or software. See Atmel application 
note 314 a software method. There are several chips you can use to 
decode DTMF including the MT3270 family from Zarlink (used to be 
Mitel).

Regards,
Les.


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Les Grant. VK2KYJ.      Phone: 02 9896 7150 Fax: 02 9896 7153
Grantronics Pty Ltd     Int'l: +612 9896 7150, +612 9896 7153
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PO Box 275, Wentworthville. NSW. 2145. Australia.            
http://www.grantronics.com.au  mailto:info@grantronics.com.au
Microcontroller Hardware and Software development:  Atmel AVR
8051 derivatives, 80C196 family, C, ASM, Digital and analogue 
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