73s1210f68im Maxim Integrated Products, Inc., 73s1210f68im Datasheet - Page 79
73s1210f68im
Manufacturer Part Number
73s1210f68im
Description
Self-contained Smart Card Reader With Pinpad And Power Management
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.73S1210F68IM.pdf
(126 pages)
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DS_1210F_001
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 application note titled “73S12xxF Synchronous Card
Design Application Note”.
Rev. 1.4
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
Figure 24: Operation of 9-bit Mode in Sync Mode
when Rlength counter is Max
Rlen=8
1._ Interrupt generated
Data from Card
Max
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
73S1210F Data Sheet
(Bit 1)
79
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