h8s-2172 Renesas Electronics Corporation., h8s-2172 Datasheet - Page 343

• Manufacturer Part Number: h8s-2172
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family H8s-2100 Series
• Manufacturer: Renesas Electronics Corporation.

Table 11.6 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 11.8 shows a sample flowchart
for serial data reception.
Table 11.6 SSR Status Flags and Receive Data Handling
Note: The RDRF flag retains its state before data reception.
RDRF*
1
0
0
1
1
0
1
ORER
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
Rev. 2.00, 03/04, page 311 of 534
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