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1 Introduction ............................................................................................................ 4
1.1 Key features ......................................................................................................... 4
1.2 Typical applications ..........................................................................5
1.3 Purpose and Organization of Document .............................................................. 5
1.4 Notations and Conventions .................................................................................. 5
2 Overview ................................................................................................................ 7
2.1 Functional description .......................................................................................... 8
3 Bus Interfaces ........................................................................................................ 12
3.1 MultiMediaCard bus interface .............................................................................. 13
3.2 Adapter interface .................................................................................................. 13
3.3 Memory interface ................................................................................................. 18
4 Architecture ............................................................................................................ 20
4.1 MultiMediaCard bus interface ...........................................................21
4.2 Power Management ............................................................................................. 22
4.3 CMD line controller .............................................................................................. 24
4.4 CRC unit .............................................................................................................. 26
4.5 DAT line shift unit ................................................................................................. 26
4.6 CLK controller ...................................................................................................... 27
4.7 Adapter interface .................................................................................................. 28
4.8 Interrupt controller ................................................................................................ 30
4.9 MultiMediaCard stack management .................................................................... 31
4.10 Data buffer .......................................................................................................... 31
5 Macro commands ................................................................................................... 33
5.1 MultiMediaCard bus commands .......................................................................... 33
5.2 Adapter commands ..........................................................................35
6 Configuration .......................................................................................................... 37
6.1 Generics ............................................................................................................... 37
6.2 Registers ..........................................................................................38
7 Electrical Characteristics ........................................................................................ 43
7.1 MultiMediaCard Bus Characteristics .................................................................... 43
7.2 Adapter Interface Bus Timing .............................................................................. 43
Appendix A Applications 45
Appendix B Gate-Count Approximation 52
Appendix C Prototype Pinout 53