73S1215F Maxim, 73S1215F Datasheet - Page 86
73S1215F
Manufacturer Part Number
73S1215F
Description
The Teridian 73S1215F is a self-contained SoC smart card reader IC that is an ideal solution for any USB-connected ISO 7816 design
Manufacturer
Maxim
Datasheet
1.73S1215F.pdf
(136 pages)
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Synchronous card operation is broken down into three primary types. These are commonly referred to as
2-wire, 3-wire and I2C synchronous cards. Each card type requires different control and timing and
therefore requires different algorithms to access. Teridian has created an application note to provide
detailed algorithms for each card type. Refer to the 73S12xxF Synchronous Card Design Application
Note application note.
86
Protection Bit Data
RLength Interrupt
TX/RX Mode Bit
RLength Interrupt
CLK Stop Level = 0
TX = '1'
RLength Count
RLength Count
(Bit 9)
RLength = 9
RLength = 9
RX data
CLK Stop
CLK
CLK
IO
when Rlength counter is
1._ Interrupt generated
when Rlength counter is Max
Rlen=8
1._ Interrupt generated
Data from Card
Max
Figure 25: Operation of 9-bit Mode in Sync Mode
Rlen=8
(Bit 8)
Stop CLK after receiving the last byte and protection bit.
Receive data in 9 bit mode
2._ Read and clear
RLength Count MAX
RLength Count MAX
Interrupt
Rlen=9
Rlen=9
Protection Bit
(Bit 9)
(Data from Card is ready for CPU read)
Rlen=0
3._ Reload RLength
Protection Bit is ready for CPU read
2._Stop CLK after the last
byte and protection bit
RX FIFO
counter
Rlen =1
Data from Card
(Bit 1)
Rev. 1.4
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