HD6413008VF25 Datasheet, PDF (369/688 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

12.1.2 Block Diagram
Figure 12.1 shows a block diagram of the SCI.
12. Serial Communication Interface
Module data bus
Internal data bus
RxD
TxD
SCK
RDR
RSR
TDR
SSR
BRR
SCR
TSR
SMR
SCMR
Transmit/receive
control
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
SCMR: Smart card mode register
φ
φ/ 4
φ/16
φ/64
TEI
TXI
RXI
ERI
Figure 12.1 SCI Block Diagram
Rev.4.00 Aug. 20, 2007 Page 323 of 638
REJ09B0395-0400