MOTOROLA
Multimedia Card/Secure Digital Host Controller Module (MMC/SD)
20-1
Chapter 20
Multimedia Card/Secure Digital Host Controller
Module (MMC/SD)
20.1 Introduction
The Multimedia Card (MMC) is a universal low cost data storage and communication medium
implemented as a hardware card with a simple control unit and a compact, easy-to-implement interface
that is designed to cover a wide variety of applications such as electronic toys, organizers, PDAs, and
smart phones. MMC communication is based on an advanced 7-pin serial bus designed to operate in a low
voltage range at medium speed (20 Mbps).
The Secure Digital Card (SD) is an evolution of the MMC with an additional 2 pins in the form factor that
is specifically designed to meet the security, capacity, performance, and environmental requirements
inherent in new audio and video consumer electronic devices. The physical form factor, pin assignment,
and data transfer protocol are compatible with the MMC. The SD is composed of a memory card and an
I/O card. The memory card includes a copyright protection mechanism that complies with the security
requirements of the Secure Digital Music Initiative (SDMI) standard, and is faster and has a higher
memory capacity. The I/O card combines high-speed data I/O with low-power consumption for mobile
electronic devices.
The Multimedia Card/Secure Digital Host Controller module (MMC/SD module) integrates MMC support
with SD memory and I/O functions. The copyright protection mechanism employs mutual authentication
and a new cipher algorithm, and is handled in software post-processing.
20.2 Features
The MMC/SD module includes the following features:
•
Full compatibility with
The MultiMediaCard System Specification,
version 3.0
•
Full compatibility with
SD Memory Card Specification
, version 1.0 and
SDIO Card Specification,
version 1.0 with 1 command channel and 4 data channels
•
20–100 Mbps maximum data rate supports up to 10 cards (including one SD card)
•
Password protection for cards
•
Built-in programmable frequency counter for MMC/SD bus
•
Maskable hardware interrupt for card detection (insertion/removal), SD I/O interrupt, internal
status, and FIFO status
•
Contains an integrated 32
×
16-bit FIFO
•
Supports plug-and-play (PnP)
•
Supports many SD functions including multiple I/O and combined I/O and memory
Содержание DragonBall MC9328MX1
Страница 68: ...1 12 MC9328MX1 Reference Manual MOTOROLA Introduction ...
Страница 86: ...2 18 MC9328MX1 Reference Manual MOTOROLA Signal Descriptions and Pin Assignments ...
Страница 116: ...3 30 MC9328MX1 Reference Manual MOTOROLA Memory Map ...
Страница 126: ...4 10 MC9328MX1 Reference Manual MOTOROLA ARM920T Processor ...
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Страница 281: ...Programming Model MOTOROLA Watchdog Timer Module 14 9 ...
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Страница 300: ...15 18 MC9328MX1 Reference Manual MOTOROLA Analog Signal Processor ASP ...
Страница 438: ...18 16 MC9328MX1 Reference Manual MOTOROLA Serial Peripheral Interface Modules SPI 1 and SPI 2 ...
Страница 478: ...19 40 MC9328MX1 Reference Manual MOTOROLA LCD Controller ...
Страница 542: ...20 64 MC9328MX1 Reference Manual MOTOROLA Multimedia Card Secure Digital Host Controller Module MMC SD ...
Страница 574: ...21 32 MC9328MX1 Reference Manual MOTOROLA Memory Stick Host Controller MSHC Module ...
Страница 598: ...23 16 MC9328MX1 Reference Manual MOTOROLA Real Time Clock RTC ...
Страница 670: ...24 72 MC9328MX1 Reference Manual MOTOROLA SDRAM Memory Controller ...
Страница 726: ...25 56 MC9328MX1 Reference Manual MOTOROLA SmartCard Interface Module SIM ...
Страница 736: ...26 10 MC9328MX1 Reference Manual MOTOROLA General Purpose Timers ...
Страница 854: ...29 18 MC9328MX1 Reference Manual MOTOROLA I2C Module ...
Страница 900: ...30 46 MC9328MX1 Reference Manual MOTOROLA Synchronous Serial Interface SSI ...
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