The SD 4.1/SDIO 4.1 IP from Arasan Chip Systems is a highly integrated host controller IP solution that supports three key memory card I/O technologies:
SD 4.1
SDIO 4.1
eMMC 4.51
SD 4.1 Host Controller IP handles all of the timing and interface protocol requirements to access these media as well as processing the commands in hardware thereby scaling in both performance and access speeds. The IP supports connection to a single slot and performs multi-block writes and erases that lower access overhead. In addition, a host can utilize this IP to boot directly from an attached eMMC memory, thereby simplifying system initialization during power-up. The SD 4.1 Host interface is based on a standard 32-bit AXI bus which is used to transfer data and configure the IP.
The Arasan SD 4.1 Host is bundled with the eMMC 4.51 Host Controller.
Diagram
Features
Compliance
Compliant with Part A2 SD Host controller Version 4.1v
Compliant with Part 1 Physical Layer specification Version 4.1
Compliant with Part 1 SD specifications UHS-II addendum Ver1.00
Compliant with Part A2 SD Host controller Version 3.01v
Compliant with Part 1 Physical Layer Specification Version 3.01
Compliant with Part E1 SDIO specification Version 4.1
Compliant with eMMC Specification Version 5.0
AMBA AXI Specification Version 3.00 (Standard)
AMBA AHB Specification Version 2.00 (Optional)
OCP specification Version 2.2 (Optional)
Core Features
Supports one of the following System/Host Interfaces: AHB, AXI or OCP
Data transfer using PIO mode on the Host Bus Slave interface, using DMA mode on the Host Bus Master interface. Here the Host Bus is AHB or AXI or OCP Interface
Supports eMMC4.5 Security Protocol Commands
Supports 32-bit and 64-bit system bus
Configurable FIFO size to support different block sizes
Supports Interrupts and wake up functionality
Supports Internal Clock divider for various card operational modes
UHS-II Features
Supports UHS-II data transfer rates between 390Mb/s to 1.56Gb/s
Supports Full duplex & Half duplex modes
Supports peak interface speed of 3.12 Gb/s in Half-duplex; 1.56 Gb/s in Full-duplex mode
Multiple power saving modes: Dormant, Line standby
Interface speed is continuously variable
Interfaces to Arasan’s UHS-II PHY Analog Front End
Implements UHS-II Digital PHY Interface, Link Layer, Transaction Layer and Legacy SD3.0 functionality
Supports Point to Point for Single UHS-II device and Ring topology for supporting Multiple UHS-II devices
Card Detection (Insertion / Removal)
Auto detects UHS-II and UHS-I card
UHS- I Features (SD3.0/SDIO3.0)
Host clock rate variable between 0 and 208 MHz
Up to 832Mbits per second data rate using 4 parallel data lines (SDR104 mode)
Transfers the data in 1-bit and 4-bit SD modes and SPI mode
Transfers the data in SDR104, DDR50, SDR50, SDR25, SDR12, DS & HS modes
Supports 1.8V voltage Switch operation
Supports Tuning for SDR104 and SDR50
Cyclic Redundancy Check CRC7 for command and CRC16 for data integrity
