Hi, I would like to use the Xilinx Spartan 3 DCI series source termination feature but the SSO guidelines from Pg25 of "DC and Switching Characterisics"(from the datasheet) leaves me thinking DCI is not supported for my IO standard and package.
The IO standard is LVDCI_33. I.e. I want to use series termination for
3.3V LVCMOS signals. The part we are considering is XC3S50 TQ144. The table on pg25 shows a "-" for the number of SSO (simultaneously switching outputs) for LVDCI_33. Does this "-" mean 0 are supported, or it hasn't been characterised yet, or ??Questions:
1) Is LVDCI_33 supported for the TQFP144 package?Also would be interested to know why it isn't supported.(extra pin inductance of the leaded packages??)
Regards Andrew