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PRELIMINARY
S3C6400X RISC MICROPROCESSOR
HSMMC CONTROLLER
27-1
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
27
HIGH-SPEED MMC CONTROLLER
This chapter describes the MultiMediaCard controller and related registers supported by S3C6400X RISC
microprocessor.
OVERVIEW
The HSMMC (High-speed MMC) SDMMC is a combo host for Secure Digital card and MultiMediaCard. This host
is compatible for SD Association’s (SDA) Host Standard Specification.
You can interface your system with SD card and MMC card. The performance of this host is very powerful, you
would get 50Mhz clock rate and access 8-bit data pin simultaneously.
FEATURES
The High-Speed MMC controller supports:
z
SD Standard Host Specification (ver 1.0) compatible
z
SD Memory Card Specification (ver 2.0) / HSMMC Specification (4.0) compatible
z
SDIO Card Specification (Ver 1.0) compatible
z
512 bytes FIFO for data Tx/Rx
z
48-bit Command Register
z
136-bit Response Register
z
CPU Interface and DMA data transfer mode
z
1bit / 4bit / 8bit mode switch support
z
Auto CMD12 support
z
Suspend / Resume support
z
Read Wait operation support
z
Card Interrupt support
z
CE-ATA mode support