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The second paragraph says:

> Besides the built-in RAM, Allwinner D1s comes with many of the same features as D1 RISC-V SoC, but loses HDMI output and the HiFi 4 audio DSP, and Allwinner made some tweaks to the IOs with one less I2S audio interface, and general-purpose ADC.

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Were the HDMI output and audio DSP licensed IP blocks from another company? On other Allwinner chips, the HDMI phy is from a different company than Allwinner.

Guess this is a super budget respin of this chip, where most licensed IP blocks have been removed.

Or even just that the chip was designed to fuse these blocks off for the low price options. It's not uncommon for those license agreements to allow disabled blocks without the licensing fees.

It saves millions of dollars to not have to do a different mask set, so quite likely. The downside is wasted silicon area and thus per-unit cost, but you've got to make a lot before that bites.

HIFI4 is Cadence IP.

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