HD64F3670 RENESAS [Renesas Technology Corp], HD64F3670 Datasheet - Page 198

• Manufacturer Part Number: HD64F3670
• Description: Hitachi Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Table 13.5 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 13.8 shows a sample flowchart
for serial data reception.
Table 13.5 SSR Status Flags and Receive Data Handling
RDRF*
1
0
0
1
1
0
1
Note: * The RDRF flag retains the state it had before data reception.
Rev. 2.0, 03/02, page 174 of 298
OER
1
0
0
1
1
0
1
SSR Status Flag
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