Hello Gentleman,
I would like to designed a simple relax machine by LPC4350.It can diplay 1024 x 768 RGB565 about 25 frame per second like movies.I conceive 32M Byte/32 bitwidth SDRAM to monopolize the EMC quiken data rate.Progam code is storaged in quad flash and access by SPIFI.Picture and audio data is storaged in nand flash and access by GPIO.
Firstly pics data is load to SDRAM from Nand flash.Sencondly movie pics would display on LCD by DMA and EMC from SDRAM .Max ten pics (1024 x 768 RGB565) is played by loop cycle,so all pics data can put into SDRAM. No need load from Nand flash.
Could this be realized?What more comments?
Thinks,
Andrewchen
With the calculator here you can get an idea if there is enough bandwidth:
http://www.lpcware.com/content/nxpfile/lcd-bandwidth-calculator-lpc18xx-and-lpc43xx
Use the EMC on 120MHz (as well as the CPU), then you get the highest throughput. The resolution and refresh rate you want to achieve seems to be feasable.
By the way, for applications like this the LPC1850 is suitable as well (chip & software can be exchanged 1:1), then you won't have the overhead with the second core and the FPU.
Regards,
NXP Support Team
Additionally.I mean that movie pics can be 25 frames per sencond but the LCD scan frequency should be 60Hz.
Thanks again.