HD6432646 Hitachi, HD6432646 Datasheet - Page 505

• Manufacturer Part Number: HD6432646
• Description: (HD64F264x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

Table 13-11 Receive Errors and Conditions for Occurrence
Receive Error
Overrun error
Framing error
Parity error
Figure 13-8 shows an example of the operation for reception in asynchronous mode.
RDRF
FER
1
Start
bit
0
D0
Abbreviation
ORER
FER
PER
Figure 13-8 Example of SCI Operation in Reception
D1
(Example with 8-Bit Data, Parity, One Stop Bit)
1 frame
Data
D7
Occurrence Condition
When the next data reception is
completed while the RDRF flag
in SSR is set to 1
When the stop bit is 0
When the received data differs
from the parity (even or odd) set
in SMR
Parity
bit
RXI interrupt
request
generated
0/1
Stop
bit
1
Start
bit
0
RDR data read and RDRF
flag cleared to 0 in RXI
interrupt service routine
D0
D1
Data
Data Transfer
Receive data is not
transferred from RSR to
RDR.
Receive data is transferred
from RSR to RDR.
Receive data is transferred
from RSR to RDR.
D7
Parity
bit
ERI interrupt request
generated by framing
error
0/1
Stop
bit
0
Idle state
(mark state)
1
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