interfacing three adau1701
in [DSP]
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From: rammya.tv on 15 Feb 2010 23:32 hi.. i have some doubts regarding interfacing of three adau1701. -whether same clock(crystal circuit) can be applied to three of them. -we know for operating in self boot mode EEPROM is needed. do we need to use three EEPROM for three ic. In my project i want to save last settings, ie when i switch ON my device it should work with previous values for that i need an EEPROM. -please give a detail idea regarding the addressing of three adau and EEPROM three ic's. with regards Rammya
From: Vladimir Vassilevsky on 16 Feb 2010 10:22 rammya.tv wrote: > hi.. > > i have some doubts regarding interfacing of three adau1701. > > -whether same clock(crystal circuit) can be applied to three of them. Yes. > -we know for operating in self boot mode EEPROM is needed. > do we need to use three EEPROM for three ic. Don't use EEPROMs. Use microcontroller. > In my project i want to save last settings, ie when i switch ON my device > it > should work with previous values for that i need an EEPROM. Same microcontroller would do that. > -please give a detail idea regarding the addressing of three adau and > EEPROM three ic's. I am consultant and I provide solutions for money. Vladimir Vassilevsky DSP and Mixed Signal Design Consultant http://www.abvolt.com
From: Richard Owlett on 16 Feb 2010 14:03 Vladimir Vassilevsky wrote: > > > rammya.tv wrote: > >> hi.. >> >> i have some doubts regarding interfacing of three adau1701. >> >> -whether same clock(crystal circuit) can be applied to three of them. > > Yes. > >> -we know for operating in self boot mode EEPROM is needed. >> do we need to use three EEPROM for three ic. > > Don't use EEPROMs. Use microcontroller. And just how does a microcontroller know/save previous settings without a memory, be it EEPROM/flash/"Jacquard's cards" ????? > >> In my project i want to save last settings, ie when i switch ON my device >> it >> should work with previous values for that i need an EEPROM. > > Same microcontroller would do that. See above. > >> -please give a detail idea regarding the addressing of three adau and >> EEPROM three ic's. > > I am consultant and I provide solutions for money. You do disservice to ALL consultants. I suspect OP has misread data sheet and does not appreciate that the referenced EEPROM is internal to the chip. Much more basic question. *WHY* does OP think in terms of *3* chips? I think it obvious that OP will need a consultant. But why not lead him to ask the _RIGHT_ questions!!!!! P.S. my real life experience is more towards instrumentation than anything related to this > > > Vladimir Vassilevsky > DSP and Mixed Signal Design Consultant > http://www.abvolt.com > >
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