
154
5. The RDRF flag of the SSR is set to 1 by each completion of a 1-byte data reception by the SCI,
an RxI interrupt is generated, and the DTC is activated. The received data is transferred from
RDR to RAM by the DTC, and the RDRF flag is 0 cleared.
6. After completion of 128 data transfers (DTCRA = 0), the DTER is cleared while the RDRF is
maintained as 1, and an RxI interrupt request is made to the CPU. The interrupt processing
routine clears the RDRF, and performs the other completion processing.
8.4
Cautions on Use
•
DMAC and DTC register access by the DTC is prohibited.
•
DTC register access by the DMAC is prohibited.
•
When setting a bit in DTER, first ensure that all transfers on the DTC channel corresponding to
that DTER have ended, or disable the transfer source for each channel so that DTC transfer
corresponding to that DTER will not occur.
The above restrictions do not apply for A mask
due to change in the access method of DTER. However, take caution when changing LSI to A
mask, since modification of the program is required.
Summary of Contents for SH7041 Series
Page 2: ......
Page 6: ......
Page 38: ...xvi ...
Page 44: ...6 ...
Page 46: ...8 ...
Page 48: ...10 ...
Page 82: ...44 ...
Page 114: ...76 ...
Page 118: ...80 ...
Page 124: ...86 ...
Page 170: ...132 ...
Page 250: ...212 ...
Page 492: ...454 ...
Page 506: ...468 ...
Page 604: ...566 ...
Page 684: ...646 ...
Page 706: ...668 ...
Page 778: ...740 ...
Page 780: ...742 ...
Page 818: ...780 ...
Page 850: ...812 ...
Page 923: ...SH7040 SH7041 SH7042 SH7043 SH7044 SH7045 Group Hardware Manual REJ09B0044 0600O ...