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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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AS3525 Datenblatt(PDF) 56 Page - ams AG |
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AS3525 Datenblatt(HTML) 56 Page - ams AG |
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56 / 194 page  AS3525-A/-B C22O22 Data Sheet, Confidential © 2005-2009, austriamicrosystems AG, 8141 Unterpremstaetten, Austria-Europe. All Rights Reserved. www.austriamicrosystems.com Revision 1.13 56 - 194 7.3.5 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 21 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 22 Connecting SD / MC to GPIO-D |
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