Rev. 1.0, 09/02, page 413 of 568
Bit
Bit Name
Initial Value
R/W
Description
2 TDRE
1
R/W Transmit
Data
Empty
Indicates whether or not SSTDR contains transmit
data.
[Setting conditions]
•
When the TE bit in SSER is 0
•
When data is transferred from SSTDR to
SSTRSR and SSTDR is ready to be written to.
[Clearing conditions]
•
When 0 is written to the TDRE bit after reading
TDRE
=
1
•
When data is written to SSTDR with TE
=
1
•
When data is transferred by the DTC
1
RDRF
0
R/W
Receive Data Register Full
Indicates whether or not SSRDR contains
received data.
[Setting condition]
•
When receive data is transferred from
SSTRSR to SSRDR after successful data
reception
[Clearing conditions]
•
When 0 is written to RDRF after reading RDRF
=
1
•
When received data is read from SSRDR
•
When data is transferred by the DTC
Содержание H8S/2627
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