HD6413002 Datasheet, PDF (435/700 Pages) Renesas Technology Corp – High-performance single-chip microcontroller

13.1.2 Block Diagram
Figure 13-1 shows a block diagram of the SCI.
Module data bus
Internal
data bus
RxD
TxD
SCK
RDR
RSR
TDR
TSR
SSR
SCR
SMR
Transmit/
receive control
BRR
Baud rate
generator
Parity generate
Parity check
Clock
External clock
Legend
RSR: Receive shift register
RDR: Receive data register
TSR: Transmit shift register
TDR: Transmit data register
SMR: Serial mode register
SCR: Serial control register
SSR: Serial status register
BRR: Bit rate register
ø
ø/4
ø/16
ø/64
TEI
TXI
RXI
ERI
Figure 13-1 SCI Block Diagram
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