HD6413008F RENESAS [Renesas Technology Corp], HD6413008F Datasheet - Page 452

• Manufacturer Part Number: HD6413008F
• Description: Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series
• Manufacturer: RENESAS [Renesas Technology Corp]

13. Smart Card Interface
• Retransmission when SCI is in Transmit Mode
6. If an error signal is sent back from the receiving device after transmission of one frame is
7. The TEND bit in SSR is not set for the frame for which the error signal was received.
8. If an error signal is not sent back from the receiving device, the ERS flag is not set in SSR.
9. If an error signal is not sent back from the receiving device, transmission of one frame,
Rev.4.00 Aug. 20, 2007 Page 408 of 638
REJ09B0395-0400
Ds
Figure 13.13 illustrates retransmission when the SCI is in transmit mode.
completed, the ERS bit is set to 1 in SSR. If the RIE bit in SCR is set to the enable state, an
ERI interrupt is requested. The ERS bit should be cleared to 0 in SSR before the next parity bit
sampling timing.
including retransmission, is assumed to have been completed, and the TEND bit is set to 1 in
SSR. If the TIE bit in SCR is set to the enable state, a TXI interrupt is requested.
RDRF
PER
TDRE
TEND
ERS
Ds
Transfer from TDR to TSR
D0 D1 D2 D3 D4 D5 D6 D7 Dp DE
D0 D1 D2 D3 D4 D5 D6 D7 Dp DE
Frame n
Frame n
Figure 13.13 Retransmission in SCI Transmit Mode
Figure 13.12 Retransmission in SCI Receive Mode
[6]
[2]
[1]
[7]
Ds D0 D1 D2 D3 D4 D5 D6 D7 Dp
Transfer from TDR to TSR
Ds D0 D1 D2 D3 D4 D5 D6 D7 Dp
Retransmitted frame
Retransmitted frame
(DE)
[8]
[9]
(DE)
Ds D0 D1 D2 D3 D4
Transfer from TDR to TSR
[4]
[3]
Ds D0 D1 D2 D3 D4
Frame n + 1
Frame n + 1