Maxim Integrated 73S12xxF - Manual (Page 4)

Using Synchronous Smart Cards with the 73S12xxF UG_12xxF_018
4 Rev. 1.0
Figures
Figure 1: ATR Sequence ............................................................................................................................... 6
Figure 2: Command Packet Format .............................................................................................................. 7
Figure 3: Read Command Operation ............................................................................................................ 7
Figure 4: Write and Security Command Operation ....................................................................................... 7
Figure 5: Read Command Operations .......................................................................................................... 8
Figure 6: Write and Security Command Operations ..................................................................................... 8
Figure 7: I
2
C Data Structure .......................................................................................................................... 8
Figure 8: Device Address .............................................................................................................................. 9
Figure 9: I
2
C Write Operation ........................................................................................................................ 9
Figure 10: I
2
C Read Operation ...................................................................................................................... 9
Figure 11: ATR Scope Capture ................................................................................................................... 11
Figure 12: Command Frame ....................................................................................................................... 11
Figure 13: Start Bit Zoom ............................................................................................................................ 12
Figure 14: Stop Bit Zoom ............................................................................................................................ 12
Figure 15: Start Bit and WAITTO ................................................................................................................ 13
Figure 16: ATR Interrupt Timing ................................................................................................................. 13
Figure 17: 3-Wire Command Frame ........................................................................................................... 14
Figure 18: WAITTO Interrupt Timing on the Command Byte ...................................................................... 15
Figure 19: Zoom in on the Start of the Command Frame ........................................................................... 15
Figure 20: Zoom in on the End of the Command Frame ............................................................................ 15
Figure 21: I
2
C Transaction Start with Start Bit, Device Address and Memory Address ............................. 16
Figure 22: I
2
C Transaction End with Stop Bit .............................................................................................. 17
Figure 23: I
2
C Data Read ............................................................................................................................ 18
Figure 24 : I
2
C Read Operation Termination .............................................................................................. 18
Figure 25: 2-Wire Card Activation and ATR Retrieval Flowchart ................................................................ 23
Figure 26: 2-Wire Send Command Flowchart ............................................................................................. 25
Figure 27: 2-Wire Read Data Flowchart ..................................................................................................... 26
Figure 28: 3-Wire Send Command Flowchart ............................................................................................. 28
Figure 29: 3-Wire Read Data Flowchart ..................................................................................................... 29
Figure 30: I 2 C Card Activation Flowchart .................................................................................................... 31
Figure 31: I
2
C Write Data Flowchart ........................................................................................................... 33
Figure 32: I
2
C Read Data Flowchart ........................................................................................................... 37