RDR
RxD1
RSR
TxD1
SCK1
[Legend]
RSR: Receive shift register
RDR: Receive data register
TSR: Transmit shift register
TDR: Transmit data register
SMR: Serial mode register
Section 15 Serial Communication Interface (SCI, IrDA)
Module data bus
TDR
TSR
Transmission/
reception control
Parity generation
Parity check
SCR: Serial control register
SSR: Serial status register
SCMR: Smart card mode register
BRR: Bit rate register
Figure 15.1 Block Diagram of SCI
SCMR
BRR
SSR
SCR
Baud rate
generator
SMR
Clock
External clock
Rev. 3.00 Jul. 14, 2005 Page 429 of 986
φ
φ/4
φ/16
φ/64
TEI
TXI
RXI
ERI
REJ09B0098-0300