K60P100M100SF2RM Datasheet, PDF (1567/1809 Pages) Freescale Semiconductor, Inc – K60 Sub-Family Reference Manual

Chapter 52
Secured digital host controller (SDHC)
52.1 Introduction
NOTE
For the chip-specific implementation details of this module's
instances see the chip configuration chapter.
The chapter is intended for a module driver software developer. It describes module-level
operation and programming.
52.2 Overview
52.2.1 Supported types of cards
Different types of cards supported by the SDHC are described briefly as follows:
The multi-media card (MMC) is a universal low cost data storage and communication
media that is designed to cover a wide area of applications including mobile video and
gaming. Old MMC cards are based on a 7-pin serial bus with a single data pin, while the
new high speed MMC communication is based on an advanced 11-pin serial bus
designed to operate in the low voltage range.
The secure digital card (SD) is an evolution of the old MMC technology. It is specifically
designed to meet the security, capacity, performance, and environment requirements
inherent in newly emerging audio and video consumer electronic devices. The physical
form factor, pin assignment and data transfer protocol are forward compatible with the
old MMC (with some additions).
Under the SD protocol, it can be categorized into memory card, I/O card and combo card,
which has both memory and I/O functions. The memory card invokes a copyright
protection mechanism that complies with the security of the SDMI standard. The I/O
K60 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc.
1567