H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 668

• Manufacturer Part Number: H8S-2350
• Description: 16-Bit Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 14 Smart Card Interface
Interrupt Operation
There are three interrupt sources in smart card interface mode: transmit data empty interrupt (TXI)
requests, transfer 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 14.8.
Table 14.8 Smart Card Mode Operating States and Interrupt Sources
Rev. 3.00 Sep 15, 2006 page 634 of 988
REJ09B0330-0300
Operating State
Transmit
Mode
Receive
Mode
SCK
Normal
operation
Error
Normal
operation
Error
Figure 14.8 Timing for Fixing Clock Output Level
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
DMAC
Activation
Possible
Not possible Not possible
Possible
Not possible Not possible
DTC
Activation
Possible
Possible