• Operating mode with maximum clock rate: ° Standard mode (19 MHz) °High-speed mode (50 MHz) °SDR12 (25 MHz) °SDR25 (50 MHz) °SDR50 (100 MHz) ° SDR104 (200 MHz) ° DDR50 mode (50 MHz) • Up to 800 Mb/s data rate using four parallel data lines (SDR104 mode). • Cyclic redundancy check CRC7 for command and CRC16 for data integrity. • Variable-length data transfers. • Performs read wait control, suspend/resume operation SDIO card. • Designed to work with I/O cards, read-only cards, and read/write cards. • Supports read wait control, suspend/resume operation.