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> The defacto industry standard for audio ICs is I²S, an I²C-based bus optimised for audio data. Nit: I²S has nothing to do with I²C. (Most I²S chips also hav
by eqvinox 3mo ago
> The defacto industry standard for audio ICs is I²S, an I²C-based bus optimised for audio data.
Nit: I²S has nothing to do with I²C.
(Most I²S chips also have an I²C interface since I²S only carries raw audio data, no sideband like volume control or clock configuration. But that's a separate interface and can also be SPI rather than I²C. In fact, SPI is more closely related to I²S than I²C is.)
- a1o 3mo agoThanks for this comment, it lead me to look into I2S and I learned something new!
- phire 3mo agoYeah, it's much closer to SPI. The reason why they both follow the same naming scheme is that Philips Semiconductor (now NXP) made both.
- jessienark 3mo ago[flagged]
- TazeTSchnitzel 3mo agoI²S is a remarkably simple design. There's no protocol handshakes, it's just raw PCM. I like how it's designed so sender and receiver can use totally different sample bit-depths (in either direction) without any incompatibility. https://web.archive.org/web/20070102004400/http://www.nxp.com/acrobat_download/various/I2SBUS.pdf https://web.archive.org/web/20070102004400/http://www.nxp.co...