HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 492

• Manufacturer Part Number: HD6417660
• Description: Renesas 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Rev. 1.00, 02/04, page 454 of 804
Bit
2
1
Bit Name
PER
RDF
Initial
Value R/W
0
0
R
R/(W)* Receive FIFO Data Full
Description
Parity Error
Indicates a parity error in the data read from SCFRDR in
asynchronous mode.
0: There is no parity error in the receive data read from
[Clearing conditions]
•
•
1: There is a parity error in the receive data read from
[Setting condition]
When there is a parity error in SCFRDR read data
Indicates that the received data has been transferred from
SCRSR to SCFRDR, and the number of receive data bytes in
SCFRDR is equal to or greater than the receive trigger
number set by bits RTRG1 and RTRG0 in the FIFO control
register (SCFCR).
0: The number of receive data bytes in SCFRDR is less than
[Clearing conditions]
•
•
1: The number of receive data bytes in SCFRDR is equal to or
[Setting condition]
When SCFRDR contains at least the receive trigger set
number of receive data bytes*
Note:1. SCFRDR is a 64-byte FIFO register. When RDF = 1,
SCFRDR
SCFRDR
the receive trigger set number
greater than the receive trigger set number
Power-on reset or manual reset
When there is no parity error in SCFRDR read data
Power-on reset or manual reset
When SCFRDR is read until the number of receive data
bytes in SCFRDR falls below the receive trigger set
number, and 0 is written to RDF after reading RDF = 1
at least the receive trigger set number of data bytes
can be read. If data is read when SCFRDR is empty,
an undefined value will be returned. The number of
receive data bytes in SCFRDR is indicated by the
lower bits of SCFDR.
1