Section 15 Serial I/O with FIFO (SIOF)
Rev. 2.00 Mar 09, 2006 page 646 of 906
REJ09B0292-0200
Bit 9—Transmit Control Data Register Empty (TCD): This flag indicates when SITCDR is empty
and can be written to.
Bit 9: TCD
Description
0
SITCDR transmit data is valid
TCD is cleared to 0 in the following cases:
•
When 0 is written to TCD after reading TCD = 1
1
SITCDR transmit data is invalid
(Initial value)
TCD is set to 1 in the following cases:
•
After data is transferred from SITCDR to SITSR
•
When the processor is reset
Bit 8—Receive Control Data Register Full (RCD): This flag indicates when SIRCDR is in wait
status.
Bit 8: RCD
Description
0
SIRCDR receive data is invalid
(Initial value)
RCD is cleared to 0 in the following cases:
•
When 0 is written to RCD after reading RCD = 1
•
When the processor is reset
1
SIRCDR transmit data is valid
RCD is set to 1 in the following cases:
•
After control data has been received normally and data has been
transferred from SIRSR to SIRCDR
Bit 7 to 4—Reserved: This bit is always read as 0. The write value should always be 0.
Bit 3—Transmit Underrun Error (TERR): Flag that indicates the occurrence of a transmit
underrun.
Bit 3: TERR
Description
0
Transmission is in progress, or has ended normally
(Initial value)
[Clearing conditions]
•
When 0 is written to the TERR bit after reading TERR = 1
•
When the TFRST bit in SIFCR is set to 1
•
When the processor enters the reset state
1
A transmit underrun error has occurred
•
When the amount of primary transmit data in SITDR is 0 and data is
transferred from SITDR to SITSR using a transmit operation
Содержание SH7616
Страница 10: ...Rev 2 00 Mar 09 2006 page x of xxvi ...
Страница 132: ...Section 2 CPU Rev 2 00 Mar 09 2006 page 106 of 906 REJ09B0292 0200 ...
Страница 568: ...Section 12 16 Bit Free Running Timer FRT Rev 2 00 Mar 09 2006 page 542 of 906 REJ09B0292 0200 ...
Страница 582: ...Section 13 Watchdog Timer WDT Rev 2 00 Mar 09 2006 page 556 of 906 REJ09B0292 0200 ...
Страница 662: ...Section 14 Serial Communication Interface with FIFO SCIF Rev 2 00 Mar 09 2006 page 636 of 906 REJ09B0292 0200 ...
Страница 706: ...Section 16 Serial I O SIO Rev 2 00 Mar 09 2006 page 680 of 906 REJ09B0292 0200 ...
Страница 820: ...Section 19 Pin Function Controller PFC Rev 2 00 Mar 09 2006 page 794 of 906 REJ09B0292 0200 ...
Страница 932: ...Appendix D Package Dimensions Rev 2 00 Mar 09 2006 page 906 of 906 REJ09B0292 0200 ...
Страница 935: ...SH7616 Hardware Manual ...