A complete, easy to integrate and cost-effective IP core featuring SD/SDIO/MMC Host Controller Interface, for SoC/PDA applications that connect to SD/MMC memory cards and SDIO/combo devices such as Bluetooth device.
Features:
- Compliant with SD Host Controller Spec V1.01/1.10
- Supports SD 1bit and 4bit modes, as well as SPI mode
- Compatible to MultiMediaCard spec V4.0 and older
- Provides memory-mapped and i/o access to SD/MMC cards through a Wishbone slave adapter
- Read cache with variable physical size and configurable page size to boost-up card read access performance.
- Interrupt-on-completion handshake eliminates host resources utilization during read operations
- Write FIFO with variable size and configurable thresholds to enable non-blocking operations and prevent back-pressure propagation from card to host
- Supports posted write operations
- Supports SDIO IRQ signaling
- Implements multi-block read and write commands with internal STOP command generation (CMD12) for enhanced throughput
- Supports any data block length
- Supports fast and slow SD cards. SD clock frequency: 0-50+MHz
- Supports hot card insertion and removal
- SD/SDIO/MMC/SPI identification flow implemented by hardware
- Provides command port interface for direct access to the SD/MMC devices and for I/O access to SDIO devices
- Features zero-wait-states on SD bus
- Wide range of configuration options to fine-tune the core according to the system specifications and demands
- Wide range of mask able interrupt events, such as card detection, block transfer termination, command completion, error detection end many more
- No dedicated local memory required
