r5f71374an80fpv Renesas Electronics Corporation., r5f71374an80fpv Datasheet - Page 560

• Manufacturer Part Number: r5f71374an80fpv
• Description: 32-bit Risc Microcomputer Superh?? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

Section 14 Serial Communication Interface (SCI)
• Four types of interrupts: There are four interrupt sources, transmit-data-empty, transmit end,
• Module standby mode can be set
Figure 14.1 shows a block diagram of the SCI.
RXD
TXD
SCK
Rev. 1.00 Sep. 21, 2007 Page 534 of 1124
REJ09B0402-0100
[Legend]
SCRSR:
SCRDR:
SCTSR:
SCTDR:
SCSMR:
SCSCR:
SCSSR:
SCBRR:
SCSPTR:
SCSDCR:
receive-data-full, and receive error interrupts, and each interrupt can be requested
independently. The data transfer controller (DTC) can be activated by the transmit-data-empty
interrupt or receive-data-full interrupt to transfer data.
Receive shift register
Receive data register
Transmit shift register
Transmit data register
Serial mode register
Serial control register
Serial status register
Bit rate register
Serial port register
Serial direction control register
SCRSR
SCRDR
Figure 14.1 Block Diagram of SCI
Parity generation
SCTDR
SCTSR
Parity check
Module data bus
Transmission/reception
control
SCSDCR
SCSPTR
SCSMR
SCSSR
SCSCR
External clock
Clock
Baud rate
generator
SCI
SCBRR
TEI
TXI
RXI
ERI
Internal
data bus
P φ
P φ /4
P φ /16
P φ /64