HD6417618 RENESAS [Renesas Technology Corp], HD6417618 Datasheet - Page 412

• Manufacturer Part Number: HD6417618
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7618 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 14 Serial Communication Interface with FIFO (SCIF)
Receiving Serial Data (Synchronous Mode): Figure 14.15 shows a sample flowchart for
receiving serial data. When switching from asynchronous mode to synchronous mode without
SCIF initialization, make sure that ORER, PER, and FER are cleared to 0.
Rev. 6.00 Jun. 12, 2007 Page 380 of 610
REJ09B0131-0600
No
No
Read ORER flag in SCLSR
Clear RE bit in SCSCR to 0
Figure 14.15 Sample Flowchart for Receiving Serial Data (1)
Figure 14.16 Sample Flowchart for Receiving Serial Data (2)
Read RDF flag in SCFSR
SCFRDR, and clear RDF
Read receive data in
flag in SCFSR to 0
All data received?
Start of reception
End of reception
ORER = 1?
RDF = 1?
No
Yes
Yes
No
Clear ORER flag in SCLSR to 0
Error handling
[2]
[3]
Yes
Overrun error handling
Error handling
[1]
ORER = 1?
End
Yes
[1] Receive error handling:
[2] SCIF status check and receive data read:
[3] Serial reception continuation procedure:
identify any error, perform the appropriate
error handling, then clear the ORER flag
to 0. Transmission/reception cannot be
resumed while the ORER flag is set to 1.
then read the receive data in SCFRDR,
and clear the RDF flag to 0. The transition
of the RDF flag from 0 to 1 can also be
identified by an RXI interrupt.
the receive trigger set number of receive
data bytes from SCFRDR, read 1 from the
RDF flag, then clear the RDF flag to 0.
The number of receive data bytes in
SCFRDR can be ascertained by reading
SCFRDR.
Read the ORER flag in SCLSR to
Read SCFSR and check that RDF = 1,
To continue serial reception, read at least