Hi, on page 25 of DS099-3 Spartan3 DC and Switching Characteristics, there's a a formula for the maximum number of SSOs allowed within an I/O bank. I have a XC3S200FT256 working in LVCMOS33 standard (fast,
2mA), its table 22 value is 3, while its table 23 value is 44. Do I really have a limit of 3x44=132 SSOs for each bank? This value excedes by far the number of pin per bank in this package... It is "reasonable" for output currents of 24mA or 16mA, where it limits the SSOs to 9 and 21 respectively. This post is only to check if what I found is correct or if I'm wrong. Thanks, Marco- posted
18 years ago