Maxim Integrated 73S12xxF - Manual (Page 3)

UG_12xxF_018 Using Synchronous Smart Cards with the 73S12xxF
Rev. 1.0 3
Table of Contents
1 Introduction ......................................................................................................................................... 5
2 Synchronous Smart Card Basics ...................................................................................................... 6
2.1 2-Wire Cards ................................................................................................................................. 6
2.1.1 Answer to Reset ................................................................................................................ 6
2.1.2 Command and Response Processing ............................................................................... 7
2.2 3-Wire Cards ................................................................................................................................. 7
2.2.1 Answer to Reset ................................................................................................................ 7
2.2.2 Command and Response Processing ............................................................................... 8
2.3 I
2
C Cards....................................................................................................................................... 8
2.3.1 I
2
C Write Operations .......................................................................................................... 9
2.3.2 I
2
C Read Operations ......................................................................................................... 9
3 Using Synchronous Smart Cards with the 73S12xxF ................................................................... 10
3.1 Special Precautions when Using Synchronous Smart Cards ..................................................... 10
3.1.1 Synchronous Mode Clock ............................................................................................... 10
3.1.2 Proper Use of Interrupts in Synchronous Mode .............................................................. 10
3.2 73S12xxF Operation ................................................................................................................... 10
3.2.1 2-Wire Card Operation .................................................................................................... 11
3.2.2 3-Wire Card Operation .................................................................................................... 14
3.2.3 I 2 C Card Operation .......................................................................................................... 16
4 Related Documentation .................................................................................................................... 19
5 Contact Information .......................................................................................................................... 19
Appendix A ................................................................................................................................................ 20
A.1 2-Wire Card Activation and ATR Retrieval ................................................................................. 21
A.2 2-Wire Send Command to Sync Card with Start and Stop Bits ................................................. 24
A.3 2-Wire Read Data from Sync Card ............................................................................................. 26
A.4 3-Wire Send Command to Sync Card with Start and Stop Bits ................................................. 27
A.5 3-Wire Read Data from Sync Card ............................................................................................. 29
A.6 Activate 1 2 C Type of Smart Card ............................................................................................... 30
A.7 Perform Page Write to 1 2 C Mode Sync Card ............................................................................. 32
A.8 Read Data from 1 2 C Type Sync Card ........................................................................................ 34
Revision History ........................................................................................................................................ 38