$20 Cellphones Possible with TI's New Chip

swimgeek writes "Texas Instrument's Indian branch has succeeded in developing a single chip which combines the functions usually performed by multiple chips in a GSM cellphone. By doing so, cellphone costs can be dramatically reduced, thus making cellphones more affordable in developing economies. Nokia has been contracted to make the initial sets, with market launch in as soon as 9 months. More coverage here and here."

Comments

How will they keep C and A separate?

[ReformedExCon]

In dual-chip architectures, there are two chips: the (C)ommunications CPU and the (A)pplications CPU. C-CPU and A-CPU respectively. They typically communicate over a bus to pass data back and forth between the two chips, so there is a standard interface between the two.

It is pretty straightforward to program for this type of setup because you don't have to worry about what the other chip is doing. It's over there doing its thing while my program is over here doing its thing. The two don't talk so often. Typically, you'll even have two separate operating systems running on the separate chips, that's how far apart they are.

But what will it be like with only one chip, and presumably one memory block? Will the single OS running the chip have to handle all events and interrupts? How much more difficult will it be to write a multitasking phone operating system when such disparate things as mail applications and radio transmissions are handled on the same chip?

I'd love for cell phone prices to come down a little bit. Hopefully this brings the prices down, but if software gets more expensive, it may be a wash.