D12320VF25IV Datasheet, PDF (724/1304 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 15 Smart Card Interface
Specified pulse width
Specified pulse width
SCK
SCR write
(CKE0 = 0)
SCR write
(CKE0 = 1)
Figure 15.8 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 15.8.
Note: For details of operation in block transfer mode, see section 14.4, SCI Interrupts.
Table 15.8 Smart Card Mode Operating States and Interrupt Sources
Operating State
Flag
Enable Bit
Transmit Normal
TEND
TIE
Mode
operation
Error
ERS
RIE
Receive Normal
RDRF
RIE
Mode
operation
Error
PER, ORER RIE
Note: * The DMAC is not supported in the H8S/2321.
Interrupt DTC
Source Activation
TXI
Possible
DMAC^*
Activation
Possible
ERI
Not possible Not possible
RXI
Possible
Possible
ERI
Not possible Not possible
Rev.6.00 Sep. 27, 2007 Page 692 of 1268
REJ09B0220-0600