73S1215F Maxim, 73S1215F Datasheet - Page 76

• 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

1.7.15 Smart Card Interface Function
The 73S1215F 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. Figure 15 shows the simplified block diagram of the card circuitry (UART +
family of interface devices. Figure 15 shows the simplified block diagram of the card circuitry (UART +
interfaces), with detail of dedicated XRAM registers.
interfaces), with detail of 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
SCPrtcol
STXData
SRXData
SByteCtl
RLength
SParCtl
CWT0/1
SCECtl
SRXCtl
STXCtl
STSTO
FDReg
SCCtl
SCInt
SCIE
7.2MHz
Management
Card Interrupt
Card Clock
Management
SCInt
SCInt
T=0 T=1
Rx FIFO
Tx FIFO
Timers
2-Byte
2-Byte
UART
SCSCLK
SCCLK/
Figure 15: Smart Card Interface Block Diagram
Figure 15: Smart Card Interface Block Diagram
(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
iple smart cards to be connected using the Teridian 8010
I/O ICC#1
RX
TX
SCIE
SCIE
Deactivation
Activation /
Sequencer
(Interrupt Enable to define which
(Interrupt Enable to define which
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
VccCtl/
Rev. 1.4
PRES
SCLK
VCC
RST
CLK
C8
SIO
I/O
C4