The PCI1251A GFN/GJG PC CARD CONTROLLER is a PCI interface PC card controller produced by TI. It supports 5V/3.3V PC Card16 cards and 3.3V CardBus cards, supports hot plugging, supports PCI and CardBus burst transfers, supports PCI and ISA interrupts, supports Zoom video, supports 4 general-purpose I/Os, and supports each socket with a separate configuration space.