HD643303x Hitachi, HD643303x Datasheet - Page 328

• Manufacturer Part Number: HD643303x
• Description: Hitachi Microcomputer
• Manufacturer: Hitachi

11.1.2 Block Diagram
Figure 11-1 shows a block diagram of the SCI.
SCK
RxD
Legend
RSR:
RDR:
TSR:
TDR:
SMR:
SCR:
SSR:
BRR:
TxD
Receive shift register
Receive data register
Transmit shift register
Transmit data register
Serial mode register
Serial control register
Serial status register
Bit rate register
RDR
RSR
Figure 11-1 SCI Block Diagram
Parity generate
Parity check
TDR
TSR
Module data bus
313
receive control
Transmit/
SMR
SSR
SCR
External clock
Clock
Baud rate
generator
BRR
TEI
TXI
RXI
ERI
ø
ø/4
ø/16
ø/64
Internal
data bus