SH7730 Datasheet, PDF (896/1188 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7780 Series

Section 25 SIM Card Module (SIM)
(5) Interrupt Operations
The smart card interface has four types of interrupt requests: transmit data empty interrupt (TXI)
requests, transmit/receive error interrupt (ERI) requests, receive data full interrupt (RXI) requests,
and transmit end interrupt (TEI) requests.
• When the TDRE flag in SCSSR is set to 1, a TXI request is issued.
• When the RDRF flag in SCSSR is set to 1, an RXI request is issued.
• When the ERS, ORER, PER, or WAIT_ER flag in SCSSR is set to 1, an ERI request is issued.
• When the TEND flag in SCSSR is set, a TEI request is issued.
Table 25.6 lists the interrupt sources for the smart card interface. Each of the interrupt requests can
be enabled or disabled using the TIE, RIE, TEIE, and WAIT_IE bits in SCSCR and the EIO bit in
SCSC2R. In addition, each interrupt request can be sent independently to the interrupt controller.
Table 25.6 Interrupt Sources of Smart Card Interface
Operating State
Transmit mode
Normal operation
Receive mode
Error
Normal operation
Error
Flags
TDRE
TEND
ERS
RDRF
ORER, PER
WAIT_ER
Mask Bits
TIE
TEIE
RIE
RIE, EIO
RIE
WAIT_IE
Interrupt Sources
TXI
TEI
ERI
RXI
ERI
ERI
Rev. 1.00 Sep. 19, 2007 Page 848 of 1136
REJ09B0359-0100