Table 14.11 Ssr Status Flags And Receive Data Handling - Renesas H8S Series Hardware Manual

Section 14 Serial Communication Interface (SCI)
Table 14.11 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
ORER, FER, PER, and RDRF bits to 0 before resuming reception. Figure 14.9 shows a sample
flowchart for serial data reception.

Table 14.11 SSR Status Flags and Receive Data Handling

SSR Status Flag
RDRF *
ORER FER
1 1 0
0 0 1
0 0 0
1 1 1
1 1 0
0 0 1
1 1 1
Note: * The RDRF flag retains the state it had before data reception.
Rev. 6.00 Mar 15, 2006 page 346 of 570
REJ09B0211-0600
PER Receive Data
0 Lost
0 Transferred to RDR
1 Transferred to RDR
0 Lost
1 Lost
1 Transferred to RDR
1 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