8.4.9.2 Over Current Fault

When the current drawn on the VCC pin of any of the card interfaces exceeds the over current limit (see Electrical Characteristics—Fault Condition Detection) the PROT bit (bit[4]) of the card interface status register (Reg 0x00 for user card, Reg 0x10 for SAM1, Reg 0x20 for SAM2 and Reg 0x30 for SAM3) is set. The interrupt bit corresponding to the card interface in the interrupt status register (Reg 0x41) is also set and the INT pin is asserted low. The interrupt bit is cleared and the INT pin is released, when the interrupt status register is read. The PROT bit is cleared only when the corresponding card interface status register is read.