Jz4750 vs Jz4740
wolfgang at qi-hardware.com
Wed Aug 26 22:43:45 EDT 2009
so far I've heard of the following differences:
2 SD/SDIO (4740 has 1)
4 UART (4740 has 2)
8bit NAND interface (4740 is 4-bit)
better touch-screen interface (4740 is very basic, don't know details)
4750 has some more SIMD instructions (called SIMD2)
and they also improved the video engine part in the CPU (not sure whether
it's openly documented or not)
4750 CPU can boot from SD card
4740 is available in 2 packaging options: BGA & COB (marketed as 4720).
COB version has 16-bit memory bus, BGA is 32-bit.
4750 not sure. I've heard of BGA and COB (marketed as 4750L), but it's
possible for technical or marketing reasons the COB variant will have
the narrower bus again. Maybe there is a QFP version?
Sorry that's all I know. Thanks for asking maybe others know more...
On Wed, Aug 26, 2009 at 09:08:52PM -0500, Carlos Camargo wrote:
> We are planning a new product based on Ingenic chips, our idea is design a
> wall computer. We are evaluating the Jz4750 and jz4740, we have a Sungale
> Photo Frame based on Jz4740, with 800x600 LCD and 64Mb of SDRAM, We write
> some applications using QT 4.5. And we note the process a bit slow.
> We want to evaluate the ingenic chip Jz4750
> Can share with us experiences with this two chips.
> What is the main diffrence between them?
> Best Regards
> Carlos Iván Camargo Bareño
> Profesor Asistente
> Departamento de Ingeniería Eléctrica y Electrónica
> Universidad Nacional de Colombia
> cicamargoba at unal.edu.co
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