Rev. 2.00, 09/03, page 392 of 690
Bit
Bit
Name
Initial
Value
R/W
Description
6
TEND
1
R
Transmit End
Indicates that there is no valid data in SCFTDR when the
last bit of the transmit character is sent, and transmission
has been ended.
0: Transmission is in progress
[Clearing condition]
When data is written to SCFTDR
1: Transmission has been ended
[Setting condition]
When there is no transmit data in SCFTDR on transmission
of a 1-byte serial transmit character
5
TDFE
1
R/(W)
*
Transmit FIFO Data Empty
Indicates that data has been transferred from SCFTDR to
SCTSR, the number of data bytes in SCFTDR has fallen to
or below the transmit trigger data number set by bits
TTRG1 and TTRG0 in the FIFO control register (SCFCR),
and new transmit data can be written to SCFTDR.
0: A number of transmit data bytes exceeding the transmit
trigger set number have been written to SCFTDR
[Clearing condition]
When transmit data exceeding the transmit trigger set
number is written to SCFTDR, and 0 is written to TDFE
after reading TDFE = 1
1: The number of transmit data bytes in SCFTDR does not
exceed the transmit trigger set number
[Setting conditions]
•
Power-on reset or manual reset
•
When the number of SCFTDR transmit data bytes falls
to or below the transmit trigger set number as the result
of a transmit operation
*
1
Note: 1. As SCFTDR is a 64-byte FIFO register, the
maximum number of bytes that can be written
when TDFE = 1 is 64 – (transmit trigger set
number). Data written in excess of this will be
ignored. The number of data bytes in SCFTDR is
indicated by SCFDR.
Содержание SH7705
Страница 2: ......
Страница 46: ...Rev 2 00 09 03 page xlvi of xlvi Appendix Table A 1 I O Port States in Each Processing State 679 ...
Страница 70: ...Rev 2 00 09 03 page 24 of 690 ...
Страница 194: ...Rev 2 00 09 03 page 148 of 690 ...
Страница 284: ...Rev 2 00 09 03 page 238 of 690 ...
Страница 338: ...Rev 2 00 09 03 page 292 of 690 ...
Страница 354: ...Rev 2 00 09 03 page 308 of 690 ...
Страница 374: ...Rev 2 00 09 03 page 328 of 690 ...
Страница 420: ...Rev 2 00 09 03 page 374 of 690 ...
Страница 476: ...Rev 2 00 09 03 page 430 of 690 ...
Страница 482: ...Rev 2 00 09 03 page 436 of 690 ...
Страница 552: ...Rev 2 00 09 03 page 506 of 690 ...
Страница 630: ...Rev 2 00 09 03 page 584 of 690 ...
Страница 739: ...SH7705 Group Hardware Manual REJ09B0082 0200O ...