The SD 4.1 Device Controller IP core is used to implement SD cards that are connected to a Host processor over a standard SD bus. The SD 4.0 Device IP core is fully compliant with the SD specification. It supports the dual row pin memory cards with D0+/D0- and D1+/D1- pins for differential signaling.
It also supports SPI, SD1, and SD4 bit transfer modes, and multiple functions per card. High-speed and full-speed SD data transfers are also supported to capacities up to 2TB. All version 4.0 features are supported including the UHS-II PHY, SDHS, mini-SD, embedded SD ATA standard function interface code, and extended 2.7-3.6V operating voltages. The SD 4.1 Device Controller includes a bidirectional FIFO that is expandable from 4 x 32-bit to any size required.
The core supports asynchronous interrupts to the Host processor for improved performance. It supports suspend/resume operation for improved performance. The controller integrates a scatter-gather DMA engine automating data transfers between the SD card and system memory.
The SD 4.1 Device Controller IP core is available with several system bus interfaces including AHB, AXI, OCP, Avalon, BVCI, SPI and custom buses.
Diagram
Features
Fully compliant core with proven silicon
Compliant with SD Specification Part E SD Specification 4.0
Transfers up to 300 MB/s (UHS156)
Supports Asynchronous Interrupt to Host controller
Enhanced power management using new Power State Control function
Supports Read Wait Control, Suspend/Resume operations for superior card performance
High-performance UHS-II PHY or UHS-I Host connection
Multiple I/O functions and one memory supported
Host clock rate from 0 to 208 MHz (SDR 104)
Supports SPI, 1-bit, and 4-bit SD modes.
Optional 8-bit mode for embedded SD
Supports all SD form factors including standard, mini and micro SD card
Embedded SD ATA interface code
Bus Master with Scatter Gather DMA
Dual operating voltage range 2.7V – 3.6V and 1.7V – 1.95V
Maximum 104 MB/s read/write with 4-bit data lines in SD4 mode
CRC7 (command), CRC16 (data) integrity
Supports direct R/W (IO52) and extended R/W (IO53)
Deliverables
RMM-compliant synthesizable RTL design in Verilog
Easy-to-use test environment
Synthesis scripts
Technical documents
Benefits
Fully compliant core with proven silicon
Premier direct support from Arasan IP core designers
