14.1.2 Block Diagram
Figure 14-1 shows a block diagram of the smart card interface.
Figure 14-1 Smart Card Interface Block Diagram
Module data bus
Internal
data
bus
BRR
SCMR
Baud rate
generator
Transmit/receive
control
RDR
TSR
RSR
Bus interface
SSR
SCR
SMR
TDR
Legend
SCMR:
RSR:
RDR:
TSR:
TDR:
SMR:
SCR:
SSR:
BRR:
Smart card mode register
Receive shift register
Receive data register
Transmit shift register
Transmit data register
Serial mode register
Serial control register
Serial status register
Bit rate register
ø
ø/4
ø/16
ø/64
TXI
Clock
Parity generate
Parity check
RxD
0
TxD
0
SCK
0
RXI
ERI
498
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