Figure 13.2 Block Diagram Of Sci_1 And Sci_2 - Hitachi H8S/2215 Series Hardware Manual

RxD
TxD
SCK
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
SCMR : Smart card register
BRR : Bit rate register
Rev. 3.0, 10/02, page 360 of 686
Module data bus
RDR TDR
RSR TSR
Detecting parity
Parity check

Figure 13.2 Block Diagram of SCI_1 and SCI_2

SCMR BRR
SSR
SCR
Baud rate
generator
SMR
control
transmission
and reception
Clock
External clock
/4
/16
/64
TEI
TXI
RXI
ERI