HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 722

• Manufacturer Part Number: HD6412320
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 15 Smart Card Interface
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
Transmit
Mode
Receive
Mode
Note: * The DMAC is not supported in the H8S/2321.
Rev.6.00 Sep. 27, 2007 Page 692 of 1268
REJ09B0220-0600
SCK
Normal
operation
Error
Normal
operation
Error
Figure 15.8 Timing for Fixing Clock Output
Flag
TEND
ERS
RDRF
PER, ORER
Specified pulse width
SCR write
(CKE0 = 0)
Enable Bit
TIE
RIE
RIE
RIE
SCR write
(CKE0 = 1)
Interrupt
Source
TXI
ERI
RXI
ERI
Specified pulse width
DTC
Activation
Possible
Not possible Not possible
Possible
Not possible Not possible
DMAC *
Activation
Possible
Possible