Section 19 Multimedia Card Interface (Mcif); Features - Renesas H8S/2158 User Manual

Section 19 Multimedia Card Interface (MCIF)

This LSI supports a multimedia card (MultiMediaCard™ *
interface (MCIF) *
2
. The MCIF has two operating modes: MultiMediaCard mode (hereafter
referred to as MMC mode) and SPI mode. The MCIF is a clocked-synchronous serial interface
that transmits/receives data that is distinguished in terms of command and response.
A number of command/responses are predefined in the MMC. As the MCIF specifies a command
code and command type/response type upon the issuance of a command, additional commands can
be supported in future within the range of combinations of currently defined command
types/response types. The command system of the MMC supports a command extension function
specific for the application. The MCIF also supports commands extended by the secure
multimedia card (Secure-MultiMediaCard™ *
Notes: 1. MultiMediaCard™ is a trademark of Infineon Technologies AG.
Secure-MultiMediaCard™ is a multimedia card with a content protection function.
2. Supports a multimedia card that conforms to the MultiMediaCard System Specification
Version 2.11.
SPI mode is not supported in a multimedia card that conforms to the MultiMediaCard
System Specification Version 3.1.
19.1

Features

• Two operating modes: MMC mode and SPI mode
• Two MMCs can be inserted in SPI mode (two chip select outputs)
• 20-Mbps bit rate (max) (system clock of 20 MHz)
• Supports MMC commands including the Secure-MMC
• RAM-FIFO by the RFU can be used
• Three interrupt sources: FIFO empty/full, command/response/data transfer complete, and
transfer error
MMC mode:
• Interface via the MCCLK pin (transfer clock output) pin, MCCMD pin (command
transmission/response reception) , and MCDAT pin (data transmission/reception)
• Monitor output function of the MCCMD and MCDAT pin input/output status
Section 19 Multimedia Card Interface (MCIF)
1
, hereafter referred to as MMC)
1
, hereafter referred to as Secure-MMC).
Rev. 3.00 Jan 25, 2006 page 627 of 872
REJ09B0286-0300