Section 11 Direct Memory Access Controller (DMAC)
Rev. 2.00 Mar 09, 2006 page 476 of 906
REJ09B0292-0200
Bit 2—Address Error Flag Bit (AE): This flag indicates that an address error has occurred in the
DMAC. When the AE bit is set to 1, DMA transfer cannot be enabled even if the DE bit in the
DMA channel control register (CHCR) is set to 1. To clear the AE bit, read 1 from it and then
write 0. Operation is performed up to the DMAC transfer being executed when the address error
occurred. AE is initialized to 0 by a reset and in standby mode. It retains its value when the
module standby function is used.
Bit 2: AE
Description
0
No DMAC address error
(Initial value)
To clear the AE bit, read 1 from it and then write 0
1
Address error by DMAC
Bit 1—NMI Flag Bit (NMIF): This flag indicates that an NMI interrupt has occurred. When the
NMIF bit is set to 1, DMA transfer cannot be enabled even if the DE bit in the DMA channel
control register (CHCR) and the DME bit are set to 1. To clear the NMIF bit, read 1 from it and
then write 0. Operation is completed up to the end of the DMAC transfer being executed when
NMI was input. When the NMI interrupt is input while the DMAC is not operating, the NMIF bit
is set to 1. The NMIF bit is initialized to 0 by a reset or in the standby mode. It retains its value
when the module standby function is used.
Bit 1: NMIF
Description
0
No NMIF interrupt
(Initial value)
To clear the NMIF bit, read 1 from it and then write 0
1
NMIF interrupt has occurred
Bit 0—DMA Master Enable Bit (DME): Enables or disables DMA transfers on all channels. A
DMA transfer becomes enabled when the DE bit in the CHCR and the DME bit are set to 1. For
this to be effective, the TE bit in CHCR and the NMIF and AE bits must all be 0. When the DME
bit is cleared, all channel DMA transfers are aborted. DME is initialized to 0 by a reset and in
standby mode. It retains its value when the module standby function is used.
Bit 0: DME
Description
0
DMA transfers disabled on all channels
(Initial value)
1
DMA transfers enabled on all channels
Содержание SH7616
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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 ...