Cyclone® V Hard Processor System Technical Reference Manual

ID 683126
Date 8/28/2023
Public
Document Table of Contents

2.2.6.3. SD/MMC Controller

The Secure Digital (SD), Multimedia Card (MMC), (SD/MMC) and CE-ATA host controller is based on the Synopsys* DesignWare* Mobile Storage Host controller and offers the following features:

  • Integrated descriptor-based DMA
  • Supports CE-ATA digital protocol commands
  • Supports single card
  • Single data rate (SDR) mode only
  • Programmable card width: 1-, 4-, and 8-bit
  • Programmable card types: SD, SDIO, or MMC
  • Up to 64 KB programmable block size
  • Supports the following standards and card types:
    • SD, including eSD—version 3.02
    • SDIO, including embedded SDIO (eSDIO)—version 3.03
    • CE‑ATA—version 1.1
  • Supports various types of multimedia cards, MMC version 4.414
    • MMC: 1-bit data bus
    • Reduced-size MMC (RSMMC): 1-bit and 4-bit data bus
    • MMCMobile: 1-bit data bus
    • MMCPlus: 1-bit, 4-bit, and 8-bit data bus
    • Default speed and high speed
  • Supports embedded MMC (eMMC) version 4.415
    • 1-bit, 4-bit and 8-bit data bus
Note: For an inclusive list of the programmable card types and versions supported, refer to the SD/MMC Controller chapter.
2 Does not support SDR50, SDR104, and DDR50 modes.
3 Does not support SDR50, SDR104, and DDR50 modes.
4 Does not support DDR mode.
5 Does not support DDR mode.