Datasheet

Section 15 Serial Communication Interface (SCI, IrDA)
Rev. 3.00 Mar 17, 2006 page 663 of 926
REJ09B0283-0300
RxD
TxD
SCK
Clock
External clock
φ
φ/4
φ/16
φ/64
TEI
TXI
RXI
ERI
SCMR
SSR
SCR
SMR
SEMR
*
Transmission/
reception control
Baud rate
generator
BRR
Module data bus
RDR
TSRRSR
Parity generation
Parity check
TDR
Bus interface
Internal
data bus
Average transfer
rate generator*
(SCI_2)
10.667-MHz operation
• 115.152 kbps
• 460.606 kbps
16-MHz operation
• 115.196 kbps
• 460.784 kbps
• 720 kbps
32-MHz operation
• 720 kbps
Legend:
RSR : Receive shift register
RDR : Receive data register
TSR : Transmit shift register
TDR : Transmit data register
SMR : Serial mode register
SCR : Serial control register
SSR : Serial status register
SCMR : Smart card mode register
BRR : Bit rate register
SEMR : Serial extension mode register (only in SCI_2)
Note: * Only in H8S/2678R Group.
Figure 15.1 Block Diagram of SCI