r5f71374an80fpv Renesas Electronics Corporation., r5f71374an80fpv Datasheet - Page 664

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

Section 15 Synchronous Serial Communication Unit (SSU)
15.5
The SSU interrupt requests are an overrun error, a conflict error, a receive data register full,
transmit data register empty, and a transmit end interrupts. Of these interrupt sources, a receive
data register full, and a transmit data register empty can activate the DTC for data transfer.
Since both an overrun error and a conflict error interrupts are allocated to the SSERI vector
address, and both a transmit data register empty and a transmit end interrupts are allocated to the
SSTXI vector address, the interrupt source should be decided by their flags. Table 15.8 lists the
interrupt sources.
When an interrupt condition shown in table 15.8 is satisfied, an interrupt is requested. Clear the
interrupt source by CPU or DTC data transfer.
Table 15.8 SSU Interrupt Sources
Rev. 1.00 Sep. 21, 2007 Page 638 of 1124
REJ09B0402-0100
Abbreviation
SSERI
SSRXI
SSTXI
SSU Interrupt Sources and DTC
Interrupt Source
Overrun error
Conflict error
Receive data register full
Transmit data register empty SSTXI
Transmit end
Symbol Interrupt Condition
SSOEI
SSCEI
SSRXI
SSTEI
(RIE = 1) • (ORER = 1) 
(CEIE = 1) • (CE = 1)
(RIE = 1) • (RDRF = 1) Yes
(TIE = 1) • (TDRE = 1)
(TEIE = 1) • (TEND = 1) 
DTC Activation

Yes