Block Diagram - Hitachi F-ZTAT H8/3039 Series Hardware Manual

11.1.2 Block Diagram

Figure 11-1 shows a block diagram of the SCI.
RDR
RxD
RSR
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
BRR: Bit rate register
Module data bus
TDR
TSR
Transmit/
receive control
Parity generation
Parity check
Figure 11-1 SCI Block Diagram
SSR BRR
SCR
SMR
Baud rate
generator
Clock
External clock
Internal
data bus
ø
ø/4
ø/16
ø/64
TEI
TXI
RXI
ERI
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