Datasheet

Section 13 Serial Communication Interface 3 (SCI3)
Rev.4.00 Nov. 02, 2005 Page 164 of 304
REJ09B0143-0400
Clock
TXD
RXD
SCK3
BRR
SMR
SCR3
SSR
TDR
RDR
TSR
RSR
Transmit/receive
control circuit
Internal data bus
[Legend]
RSR:
RDR:
TSR:
TDR:
SMR:
SCR3:
SSR:
BRR:
BRC:
Receive shift register
Receive data register
Transmit shift register
Transmit data register
Serial mode register
Serial control register 3
Serial status register
Bit rate register
Bit rate counter
Interrupt request
(TEI, TXI, RXI, ERI)
Internal clock (φ/64, φ/16, φ/4, φ)
External
clock
BRC
Baud rate generator
Figure 13.1 Block Diagram of SCI3