HD64F3670 Datasheet, PDF (178/305 Pages) Renesas Technology Corp – Hitachi Single-Chip Microcomputer

SCK3
External
clock
Baud rate generator
Clock
BRC
Transmit/receive
control circuit
Internal clock (ø/64, ø/16, ø/4, ø)
BRR
SMR
SCR3
SSR
TXD
TSR
TDR
RXD
RSR
RDR
Legend:
RSR: Receive shift register
RDR: Receive data register
TSR: Transmit shift register
TDR: Transmit data register
SMR: Serial mode register
SCR3: Serial control register 3
SSR: Serial status register
BRR: Bit rate register
BRC: Bit rate counter
Figure 13-1 Block Diagram of SCI3
Interrupt request
(TEI, TXI, RXI, ERI)
Rev. 1.0, 03/01, page 154 of 280