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Rev. 2.0, 11/00, page 443 of 1037
23.1.2
Block Diagram
Figure 23.1 shows a block diagram of the SCI1.
SI1
SO1
SCK1
Clock
External clock
/4
/16
/64
TEI
TXI
RXI
ERI
RSR
RDR1
TSR
TDR1
SMR1
SCR1
SSR1
SCMR1
BRR1
: Receive shift register
: Receive data register1
: Transmit shift register
: Transmit data register1
: Serial mode register1
: Serial control register1
: Serial status register1
: Serial interface mode register1
: Bit rate register1
SCMR1
SSR1
SCR1
SMR1
Transmission/
reception
control
Baud rate
generator
BRR1
Module data bus
Bus interface
Internal data bus
RDR1
TSR
RSR
Parity gfeneration
Parity check
[Legend]
TDR1
Figure 23.1 Block Diagram of SCI1
Summary of Contents for Hitachi H8S/2191
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