| XC3000 | XC4000E | XC4000X | XC5200 | XC9000 | Spartan | SpartanXL | Virtex |
|---|---|---|---|---|---|---|---|
| N/A | N/A | N/A | Primitive | N/A | N/A | N/A | N/A |
BYPOSC provides for definition of a user clock for the charge pump via its I pin. When the BYPOSC symbol is not used or its I pin is not connected, the charge pump uses an internal clock.
