SH7729R Datasheet, PDF (615/855 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series

Bit 3—Framing Error (FER): Indicates a framing error in the data read from the receive FIFO
data register (SCFRDR).
Bit 3: FER
0
1
Description
No receive framing error occurred in the data read from SCFRDR (Initial value)
FER is cleared to 0 when the chip undergoes a power-on reset or enters standby
mode, or when no framing error is present in the data read from SCFRDR
A receive framing error occurred in the data read from SCFRDR
FER is set to 1 when a framing error is present in the data read from SCFRDR
Bit 2—Parity Error (PER): Indicates a parity error in the data read from the receive FIFO data
register (SCFRDR).
Bit 2: PER
0
1
Description
No receive parity error occurred in the data read from SCFRDR (Initial value)
PER is cleared to 0 when the chip undergoes a power-on reset or enters standby
mode, or when no parity error is present in the data read from SCFRDR
A receive framing error occurred in the data read from SCFRDR
PER is set to 1 when a parity error is present in the data read from SCFRDR
Bit 1—Receive FIFO Data Full (RDF): Indicates that receive data has been transferred to the
receive FIFO data register (SCFRDR), and the quantity of data in SCFRDR has become equal or
greater than the receive trigger number specified by the RTRG1 and RTRG0 bits in the FIFO
control register (SCFCR).
Bit 1: RDF
Description
0
The quantity of transmit data written to SCFRDR is less than the specified
receive trigger number
(Initial value)
When, after a power-on reset or in the standby mode, the quantity of receive
data in SCFRDR is less than the specified receive trigger value and 1 is read
from RDF, which is then cleared to 0
1
The quantity of receive data in SCFRDR is equal or greater than the specified
receive trigger number
RDF is set to 1 when a quantity of receive data equal or greater than the
specified receive trigger number is stored in SCFRDR*
Note: * Since SCFTDR is a 16-byte FIFO register, the maximum quantity of data that can be read
when RDF is 1 is the specified receive trigger number. If an attempt is made to read after
all the data in SCFRDR has been read, the data is undefined. The quantity of receive data
in SCFRDR is indicated by the lower 8 bits of SCFTDR.
Rev. 5.0, 09/03, page 569 of 806