question re Nanonote specs
Ignacio García Pérez
iggarpe at gmail.com
Thu Aug 13 18:54:35 EDT 2009
> About 'same' SoC like Dingoo or not I'm not entirely sure.
> The wiki page you are linking to says Jz4732, in all my meetings at
> Ingenic headquarters in Beijing I never once heard them talking about
> a Jz4732. It's possible such a model number exists but I doubt it.
> It's a Chinese company, things are changing fast to go with market
The SoC in the Dingoo A320 is marked as JZ4732, but it is identified by the
Ingenic code always as JZ4740 (same chip id). I might have read somewhere
that the JZ4732 was some sort of JZ4740 intended for export. Dunno if that's
> The 4720 has the same die as the 4740, but different packaging (4720 = COB,
> 4740 = BGA). COB packaging means some pins are not connected, so I believe
> the NAND and/or memory bus is not the full width as the 4740.
> The 4740 was produced in two different processes until now (180nm and
> the 160nm can run up to 384 MHz, the 180nm up to 360 MHz. The 4720 (which
> was only produced in 180nm) is specified up to 336 MHz.
Many users have reported stable operation of the A320 SoC at 430MHz, which
seems the maximum PLL output.
> In the end I think we all hope, including Ignacio from Dingux, that there
> is one strong kernel, ideally upstream, to get the most out of all variants
> of the XBurst chips. Like you said we would all benefit, Qi as well as
> Dingux. Then a lot of software could be shared, indeed.
As far as I know, what makes the difference with Ingenic is their released
information, and I believe the one most benefited from good linux support is
going to be Ingenic.
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