SPEAR1340 datasheet(18/200 Pages) STMICROELECTRONICS

18 / 200 page

Device functions

SPEAr1340

18/200

Doc ID 023063 Rev 4

2.13

Memory card interfaces (MCIF)

MCIF is a hardware IP that interfaces with the most common memory cards on the market:

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SD/SDIO 2.0

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SDHC

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CF/CF+ Rev 4.1

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MMC 4.2/4.3

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The device interface multiplexes different memory cards on the same IOs; only one memory

card is accessible at a given time. At the board level, discrete elements are required to

handle host-swap management.

Main features:

SD/SDIO/MMC controller

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Compliant with:

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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, 4.2 and 4.3

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AMBA specification AHB (version 2.0)

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Data transfer with the system core through:

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PIO mode on the Host AHB slave interface

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DMA mode on the Host AHB master interface

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Host clock rate variable from 0 to 50 MHz

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Maximum data rate achievable:

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200 Mbps (sd4 bit mode)

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400 Mbps (mmc8 bit mode)

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Data transfer:

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SD mode: 1 bit, 4 bit, and SPI mode

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MMC mode: 1 bit, 4 bit, 8 bit, and SPI mode

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Cyclic redundancy check for commands (CRC7) and for data integrity (CRC16)

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Variable length data transfer

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Read wait control and suspend/resume operations supported

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Works with IO cards, read-only cards and read/write cards

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Supports MMC Plus and MMC Mobile

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Error correction code support for MMC 4.3 cards

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Card detection (insertion/removal)

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Card password protection

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Two 4K FIFO to aid data transfer between the CPU and the controller

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FIFO overrun and underrun handled by stopping the SD clock

SPEAR1340 Datasheet(PDF) 18 Page - STMicroelectronics

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