Tcp/ip & sx

gHoST INFERNO

Hi,

does anybody know anything about a TCP/IP-Stack for the sx-chips? Google didn't help [noparse]:([/noparse]
Or UDP/IP? Or isn't it possible due to the speed and capabilities of the chip?

Thanks for your answers!
Thomas


PS: An other thing: I'm not really an electronics engineer so could you tell me if it is hard to somehow transform ~5V up to 12V? I'd like a SX-chip programming an other SX-chip...
Or do I need to supply the 12V? TIA!

PJMonty

Thomas,

Go to:

www.sxlist.com/techref/scenix/virtperf.htm

...for info and source code for the TCP/IP stack that Scenix wrote for the SX48/52 chips.

Thanks, PeterM

Paul Baker

Yeah it should be possible, at least the 10MBit 10-BaseT·especially if you use·a fast parallel to serial and serial to parallel·chip. Assuming 8bit w/ 2 control bits is a 1MByte transfer rate meaning 50 cycles per byte transfer. But you won't be able to do much else with the chip while your transferring data. Start by looking here: http://www.sics.se/~adam/uip/·(though Peter's would likely be easier since it was written specifically for the SX)

Your looking for a DC-DC converter, since you only need to provide enough to program the chip it shouldn't be too difficult, I can't give you exact·guidance on which type to use because there are many (boost, buck, charge pump, flyback, PWM, switched capacitor). But the criteria your looking for is step-up, non-inverting 5V in, 12V out. But a quick check of the type "Flash Memory Converter" yeilds the LTC1262 and the MAX662. They are between $5 and $7 depending if you need 30mA or 60mA of programming current. Both are availible in 8-dip and 8-soic.

Paul

gHoST INFERNO

Cool, thanks to both of you for your fast answers! I'll see what I can do...


Thomas