SPEAR300 datasheet(24/83 Pages) STMICROELECTRONICS

24 / 83 page

Architecture overview

SPEAr300

24/83

Doc ID 16324 Rev 2

2.23

SDIO controller/MMC card interface

The SDIO host controller has an AMBA compatible interface and conforms to the SD host

controller standard specification version 2.0. It handles SD/SDIO protocol at transmission

level, packing data, adding cyclic redundancy check (CRC), start/end bit, and checking for

transaction format correctness.

Main features:

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Meets the following standard specifications:

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SD host controller standard specification version 2.0

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SDIO card specification version 2.0

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SD memory card specification draft version 2.0

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SD memory card security specification version 1.01

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MMC specification version 3.31 and 4.2

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Supports both DMA and non-DMA mode of operation

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Supports MMC plus and MMC mobile

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Card detection (insertion/removal)

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Password protection of cards

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Host clock rate variable between 0 and 48 MHz

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Supports 1-bit, 4-bit and 8-bit SD modes and SPI mode

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Supports Multi Media Card interrupt mode

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Allows card to interrupt host in 1-bit, 4-bit, 8-bit SD modes and SPI mode.

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Up to 100 Mbit/s data rate using 4 parallel data lines (sd4-bit mode)

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Up to 416 Mbit/s data rate using 8-bit parallel data lines (sd8-bit mode)

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Cyclic redundancy check CRC7 for command and CRC16 for data integrity

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Designed to work with I/O cards, read-only cards and read/write cards

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Error correction code (ECC) support for MMC4.2 cards

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Supports read wait control, suspend/resume operation

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Supports FIFO overrun and underrun condition by stopping the SD clock

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Conforms to AMBA specification AHB (2.0)

SPEAR300 Datenblatt(PDF) 24 Page - STMicroelectronics

SPEAR300 Datenblatt(HTML) 24 Page - STMicroelectronics

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