HD6417706 RENESAS [Renesas Technology Corp], HD6417706 Datasheet - Page 394

• Manufacturer Part Number: HD6417706
• Description: Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Figure 14.1 shows a SCI block diagram.
Rev. 4.00, 03/04, page 348 of 660
Four types of interrupts
Transmit-data-empty, transmit-end, receive-data-full, and receive-error interrupts are requested
independently.
Saving power
When the SCI is not in use, it can be stopped by halting the clock supply for the saving power.
SCK0
RxD0
TxD0
SCSMR:
SCRDR:
Legend
SCRSR:
SCTDR:
SCTSR:
SCRDR
SCRSR
Receive shift register
Receive data register
Transmit shift register
Transmit data register
Serial mode register
Figure 14.1 SCI Block Diagram
Parity generation
SCTDR
SCTSR
Parity check
Module data bus
Transmit/
receive
control
SCSMR
SCSCR:
SCBRR:
SCPDR:
SCPCR:
SCPCR
SCPDR
SCSSR
SCSCR
SCSSR:
External clock
Serial control register
Serial status register
Bit rate register
SC port data register
SC port control register
Clock
Baud rate
generator
SCI
SCBRR
Internal
data bus
P
P /4
P /16
P /64
TEI
TXI
RXI
ERI