D12320VF25V Datasheet, PDF (557/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 13 Smart Card Interface
Specified pulse width
Specified pulse width
SCK
SCR write
(CKE0 = 0)
SCR write
(CKE0 = 1)
Figure 13.8 Timing for Fixing Clock Output
Interrupt Operation (Except Block Transfer Mode): There are three interrupt sources in smart
card interface mode: transmit-data-empty interrupt (TXI) requests, transmit/receive-error interrupt
(ERI) requests, and receive-data-full interrupt (RXI) requests. The transmit-end interrupt (TEI)
request is not used in this mode.
When the TEND flag in SSR is set to 1, a TXI interrupt request is generated.
When the RDRF flag in SSR is set to 1, an RXI interrupt request is generated.
When any of flags ORER, PER, and ERS in SSR is set to 1, an ERI interrupt request is generated.
The relationship between the operating states and interrupt sources is shown in table 13.8.
Note: For details of operation in block transfer mode, see section 12.4, SCI Interrupts.
Table 13.8 Smart Card Mode Operating States and Interrupt Sources
Operating State
Transmit
Mode
Normal
operation
Error
Receive
Mode
Normal
operation
Error
Flag
TEND
Enable Bit
TIE
Interrupt
Source
TXI
ERS
RIE
ERI
RDRF
RIE
RXI
PER, ORER RIE
ERI
DTC
Activation
Possible
Not possible
Possible
Not possible
Rev.7.00 Feb. 14, 2007 page 523 of 1108
REJ09B0089-0700