Block Diagram - Renesas Hitachi H8S/2194 Series Hardware Manual

23.1.2

Block Diagram

Figure 23.1 shows a block diagram of the SCI1.
RDR1
SI1
RSR
SO1
SCK1
[Legend]
RSR : Receive shift register
RDR1 : Receive data register1
TSR : Transmit shift register
TDR1 : Transmit data register1
SMR1 : Serial mode register1
SCR1 : Serial control register1
SSR1 : Serial status register1
SCMR1 : Serial interface mode register1
BRR1 : Bit rate register1
Module data bus
TDR1
TSR
Transmission/
reception
control
Parity gfeneration
Parity check
Figure 23.1 Block Diagram of SCI1
SCMR1 BRR1
SSR1
SCR1
Baud rate
generator
SMR1
Clock
External clock
Rev. 2.0, 11/00, page 443 of 1037
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TEI
TXI
RXI
ERI