I plan to use a Spartan3E device, namely XC3S500E-4PQG208C, in my next project, but there are several questions I would like to ask:
- what is their performance (relatively to the older Spartan 3 stepping 4)
a) maximal clock frequency; b) peak and average power consumption at 250MHz (Vcc, Vaux, Vio); c) average mW/MHz;
- can I use a multiplier and its "neighbour" BRAM simultaneously, i.e. is there enough routing?
- can I clock the device (preferably differential mode) using a 50MHz sine, extremely pure clock? It's Vpp can be adjusted to meet the requirements (what are they?).
Best regards Piotr Wyderski