HD6417615 Hitachi Semiconductor, HD6417615 Datasheet - Page 606

• Manufacturer Part Number: HD6417615
• Description: Hardware Manual
• Manufacturer: Hitachi Semiconductor

Table 14.11
Receive Error
Overrun error
Framing error
Parity error
5. When modem control is enabled, the RTS signal is output when SCFRDR is empty. When
Serial
data
RDF
FER
Figure 14.9 shows an example of the operation for reception in asynchronous mode.
RTS is 0, reception is possible. When RTS is 1, this indicates that SCFRDR is full and
reception is not possible.
Figure 14.10 shows an example of the operation when modem control is used.
1
(Example with 8-Bit Data, Parity, One Stop Bit, LSB-First Transfer)
Receive Error Conditions
Start
bit
Abbreviation
ORER
FER
PER
0
D0
Figure 14.9 Example of SCIF Receive Operation
D1
One frame
Data
Condition
Next serial receive operation is
completed while there are 16
receive data bytes in SCFRDR
Stop bit is 0
Received data parity differs
from that (even or odd) set in
SCSMR
D7
RXI interrupt
request
Parity
bit
0/1
Stop
bit
1
Start
bit
0
Data read and RDF
flag cleared to 0 by
RXI interrupt handler
D0
D1
Data
Data Transfer
Receive data is not transferred
from SCRSR to SCFRDR
Receive data is transferred from
SCRSR to SCFRDR
Receive data is transferred from
SCRSR to SCFRDR
D7
Parity
bit
0/1
ERI interrupt request
due to framing error
Stop
bit
1
Idle state
(mark state)
1
593