D12320VF25IV Datasheet, PDF (631/1304 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 14 Serial Communication Interface (SCI)
14.1.2 Block Diagram
Figure 14.1 shows a block diagram of the SCI.
Module data bus
RxD
TxD
SCK
RDR
RSR
TDR
SCMR
BRR
SSR
TSR
SCR
SMR
Transmission/
reception control
Baud rate
generator
Parity generation
Clock
Parity check
External clock
Legend:
SCMR: Smart card mode register
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
BRR: Bit rate register
Figure 14.1 Block Diagram of SCI
φ
φ/4
φ/16
φ/64
TEI
TXI
RXI
ERI
Internal
data bus
Rev.6.00 Sep. 27, 2007 Page 599 of 1268
REJ09B0220-0600