660
17.1.2
Block Diagram
Figure 17-1 shows a block diagram of the Smart Card interface.
Bus interface
TDR
RSR
RDR
Module data bus
TSR
SCMR
SSR
SCR
Transmission/
reception control
BRR
Baud rate
generator
Internal
data bus
RxD
TxD
SCK
Parity generation
Parity check
Clock
ø
ø/4
ø/16
ø/64
TXI
RXI
ERI
SMR
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
Figure 17-1 Block Diagram of Smart Card Interface