HD64F7047F50 Datasheet, PDF (401/766 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Table 12.9 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 12.9 shows a sample flow chart
for serial data reception.
Table 12.9 SSR Status Flags and Receive Data Handling
SSR Status Flag
RDRF* OER FER PER Receive Data
Receive Error Type
1
1
0
0
Lost
Overrun error
0
0
1
0
Transferred to RDR Framing error
0
0
0
1
Transferred to RDR Parity error
1
1
1
0
Lost
Overrun error + framing error
1
1
0
1
Lost
Overrun error + parity error
0
0
1
1
Transferred to RDR Framing error + parity error
1
1
1
1
Lost
Overrun error + framing error +
parity error
Note: * The RDRF flag retains its state before data reception.
Rev. 2.00, 09/04, page 359 of 720