Any word on whether or not the 200 chip will be among the first ones available? I'm hoping the availability of that one will prevent people from using the smaller Artices, sort of like how nobody uses Spartan6-LX75's. The Artix-100 is really funny-shaped. Somebody beat that chip with the ugly stick.
No word on that.
I agree that Artix-200 will be the FPGA of choice for mining, and the $64,000 question is whether anyone (hint, hint) can fit all 125 stages of a miner into the Artix-200's 156 columns, from left to right (or from right to left), without
the dreaded U-turn.
Or, to be more precise, whether anyone (hint, hint) can get all 2 x 125 stages of TWO miners into it.
The two "parks" (Central Park and Golden Gate Park) for the ADC and the PCIe controller in the left half of Artix-200 certainly don't help with such an endeavor...
My experience has been that sequencing doesn't matter if you program via JTAG -- just don't start the JTAG sequence until all supplies are stable. Is there reason to believe Artix-7 will be any different?
Yes, there is! There was a talk just on designing power supplies for -7 chips (Artix, Kintex, Virtex) and this point was stressed. However, most DC-DC controllers have an enable pin, thus enforcing a well-defined power-up sequence is actually quite easy.
Not so easy for power-down, but while the power-down sequence is NOMINALLY the reverse power-up sequence, it isn't critical in practice (because the "wrong" condition will only last for a short period of time, not long enough to cause damage).
There is a datasheet note that states: "On power-down, voltage w may only be higher than voltage x by y volts for z milliseconds, otherwise the long-term reliability of the chip will be affected", but the lecturer said, this is almost implicitly guaranteed in most designs and should not be of concern to most people.
They're probably having to adjust the prices upwards due to the 28nm yield trainwreck at TSMC.
I sure hope not!
But I agree with you: While Intel is now shipping 22 nm CPUs in volume, TSMC still hasn't solved the problems with the 28 nm process. Sigh.