AS3524 datasheet(46/124 Pages) AMSCO

номер детали	AS3524

подробное описание детали	Advanced Audio Processor System

PDF	124 Pages

Scroll/Zoom	100%

производитель	AMSCO [ams AG]

домашняя страница	http://www.ams.com

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46 / 124 page

AS3524 C21 / C22

austriamicrosystems

Data Sheet, Confidential

www.austriamicrosystems.com

Revision 1.11

- 124

5.3.5 MCI – SD / MMC Card Interface

Features

•

Conformance to Multimedia Card Specification v2.11

•

Conformance to Secure Digital Memory Card Physical Layer Specification, v0.96

•

uses multimedia card bus or SD card bus.

The PrimeCell™ MCI provides an interface between the APB system bus and multimedia and/or secure digital memory cards. It consists of two

parts:

•

The PrimeCell™ MCI adapter block includes the clock generation unit, the power management control, command and data

transfer

•

the APB interface provides access to the MCI adapter registers, and generates interrupt and DMA request signals.

Figure 19 Multimedia Card Interface Block Diagram

The connections to the Multimedia Card Interface are shared with the General Purpose I/O port-D (GPIO xpd[0:7]). Following diagram shows the

external circuit elements for connection to a SD card adapter. Note that a feedback clock must be routed back to xpd[6]/mci_fbclk.

Figure 20 Connecting SD / MC to GPIO-D

AS3524 датащи(PDF) 46 Page - ams AG