SH7763 Datasheet, PDF (1351/2026 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 31 Multimedia Card Interface (MMCIF)
Section 31 Multimedia Card Interface (MMCIF)
This LSI supports a multimedia card interface (MMCIF). The MMC mode interface can be
utilized. The MMCIF is a clock-synchronous serial interface that transmits/receives data which is
distinguished in terms of command and response. A number of commands and responses are
predefined in the multimedia card. As the MMCIF specifies a command code and command
type/response type upon the issuance of a command, commands extended by the secure
multimedia card (Secure-MMC) and additional commands can be supported in the future within
the range of combinations of currently defined command types/response types.
31.1 Features
• Interface that complies with the MultiMediaCard System Specification Version 3.1
• MMC mode supported.
Interface via the CLK output (transfer clock output) pin, the CMD input/output (command
output/response input) pin, and the DAT input/output (data input/output) pin
• 16.7-Mbps bit rate (max.) for the card interface (at peripheral clock 1 of 33.3 MHz)
• Incorporates 64 data-transfer FIFOs of 16 bits
• DMA transfer requests issuance supported.
Note that DMA transfer is disabled when the card conforming to the Multimedia Card System
Specification (version 2.2 or lower) is connected.
• Four interrupt sources
FIFO empty/full, command/response/data transfer complete, transfer error, and FIFO ready
• Card identification function
• Stream transfer unsupported
Rev. 1.00 Oct. 01, 2007 Page 1285 of 1956
REJ09B0256-0100