ADAU 1761 - Program RAM
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Is it true that the 1761 doesn't have program ROM? Does that mean that I will have to reload code every time I turn the chip on? Are the 1701 and 1442 the only chips with stand-alone capability?
Hi Tyler,
Yes, that's correct. None of the SigmaDSPs have ROM, so all of them have to be booted externally.
The ADAU1701, ADAU1702, ADAU1401, ADAU1401A, ADAU1442, ADAU1445, and ADAU1446 have a self-boot feature that allows them to load their boot data from an external EEPROM, giving them stand-alone capability.
All of the other SigmaDSPs need to be booted from a microcontroller or some other kind of intelligent master device on the I2C or SPI bus.
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