Table 14.5 Ssr Status Flags And Receive Data Handling - Renesas H8 Series Hardware Manual

Section 14 Serial Communication Interface 3 (SCI3)
Table 14.5 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 14.8 shows a sample flowchart
for serial data reception.

Table 14.5 SSR Status Flags and Receive Data Handling

SSR Status Flag
RDRF* OER
1 1
0 0
0 0
1 1
1 1
0 0
1 1
Note: * The RDRF flag retains the state it had before data reception.
Rev. 1.00 Aug. 28, 2006 Page 220 of 400
REJ09B0268-0100
FER PER
0 0
1 0
0 1
1 0
0 1
1 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