73s1209f68im Maxim Integrated Products, Inc., 73s1209f68im Datasheet - Page 68

• Manufacturer Part Number: 73s1209f68im
• Description: Self-contained Pinpad, Smart Card Reader Ic Uart To Iso7816 / Emv Bridge Ic
• Manufacturer: Maxim Integrated Products, Inc.

1.7.13 Smart Card Interface Function
The 73S1209F integrates one ISO-7816 (T=0, T=1) UART, one complete ICC electrical interface as well as an
external smart card interface to allow multiple smart cards to be connected using the Teridian 8010 family of interface
devices.
dedicated XRAM registers.
dedicated XRAM registers.
Card interrupts are managed through two dedicated registers
Card interrupts are managed through two dedicated registers
interrupt is enabled) and
interrupt is enabled) and
interrupt, that can be a card insertion / removal, card power fault, or a transmission (TX) or reception (RX)
interrupt, that can be a card insertion / removal, card power fault, or a transmission (TX) or reception (RX)
event / fault. It should be noted that even when card clock is disabled, an ICC interrupt can be generated
event / fault. It should be noted that even when card clock is disabled, an ICC interrupt can be generated
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ATRMsB/LsB
BGT0/1/2/3/
XRAM Registers
BGT/EGT
SByteCtl
SCPrtcol
STXData
SRXData
RLength
SParCtl
CWT0/1
SCECtl
SRXCtl
FDReg
STXCtl
STSTO
SCCtl
SCInt
SCIE
Figure 13 shows the simplified block diagram of the card circuitry (UART + interfaces), with detail of
7.2MHz
SCInt
SCInt
Management
Card Interrupt
Card Clock
Management
T=0 T=1
Rx FIFO
Tx FIFO
Figure 13: Smart Card Interface Block Diagram
Figure 13: Smart Card Interface Block Diagram
Timers
2-Byte
2-Byte
UART
SCSCLK
SCCLK/
(Interrupt status). They allow the firmware to determine the source of an
(Interrupt status). They allow the firmware to determine the source of an
CLK ICC
CLKExt. ICC
Direct
Mode
Selection
Card and
SCCLK/SCSCLK
Serial
UART
Mode
ICC Event
ICC Pwr_event
SCSel
I/O ICC#1
RX
TX
SCIE
SCIE
circuitry (UART + interfaces), with detail of
(Interrupt Enable to define which
(Interrupt Enable to define which
Deactivation
Activation /
Sequencer
SCDir
Internal ICC Interface
External ICC Interface
Generation
Buffer / Level
Buffer / Level
Buffer / Level
Buffer / Level
Buffer / Level
VCC Card
Insertion
Shifter
Shifter
Shifter
Shifter
Shifter
Card
SCSCLK
SCCLK
VccTMR
Rev. 1.2
VccCtl/
PRES
SCLK
VCC
RST
CLK
C8
SIO
I/O
C4