Block Diagram; Figure 15.1 Block Diagram Of Sci - Hitachi SH7751 Hardware Manual

15.1.2

Block Diagram

Figure 15.1 shows a block diagram of the SCI.
SCRDR1
RxD SCRSR1
TxD
SCK
SCRSR1: Receive shift register
SCRDR1: Receive data register
SCTSR1: Transmit shift register
SCTDR1: Transmit data register
SCSMR1: Serial mode register
SCSCR1: Serial control register
SCSSR1: Serial status register
SCBRR1: Bit rate register
SCSPTR1: Serial port register
Module data bus
SCSSR1
SCTDR1
SCSCR1
SCSMR1
SCTSR1
SCSPTR1
Transmission/
reception
control
Parity generation
Parity check

Figure 15.1 Block Diagram of SCI

SCBRR1
Baud rate
generator
Clock
External clock
SCI
Rev. 3.0, 04/02, page 571 of 1064
Internal
data bus
Pφ
Pφ/4
Pφ/16
Pφ/64
TEI
TXI
RXI
ERI