HD6417144 RENESAS [Renesas Technology Corp], HD6417144 Datasheet - Page 478

• Manufacturer Part Number: HD6417144
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family/SH7144 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

13. Serial Communication Interface (SCI)
Table 13.11 shows the states of the SSR status flags and receive data handling when a receive
error is detected. If a receive error is detected, the RDRF flag retains its state before receiving
data. Reception cannot be resumed while a receive error flag is set to 1. Accordingly, clear the
OER, FER, PER, and RDRF bits to 0 before resuming reception. Figure 13.9 shows a sample flow
chart for serial data reception.
Table 13.11 SSR Status Flags and Receive Data Handling
Note:
Rev.4.00 Mar. 27, 2008 Page 434 of 882
REJ09B0108-0400
RDRF*
1
0
0
1
1
0
1
*
OER
1
0
0
1
1
0
1
SSR Status Flag
The RDRF flag retains its state before data reception.
FER
0
1
0
1
0
1
1
PER
0
0
1
0
1
1
1
Receive Data
Lost
Transferred to RDR
Transferred to RDR
Lost
Lost
Transferred to RDR
Lost
Receive Error Type
Overrun error
Framing error
Parity error
Overrun error + framing error
Overrun error + parity error
Framing error + parity error
Overrun error + framing error +
parity error