Section 14 Direct Memory Access Controller (DMAC)
Rev.1.00 Dec. 13, 2005 Page 608 of 1286
REJ09B0158-0100
14.5 Usage
Notes
Pay attentions to the following notes when the DMAC is used.
14.5.1 Module
Stop
While the DMAC is in operation, modules should not be stopped by setting MSTPCR (transition
to the module standby state) .When modules are stopped, transfer contents cannot be guaranteed.
14.5.2 Address
Error
When a DMA address error is occurred, after execute the following procedure, and then start a
transfer.
1. Dummy read for the below listed registers.
BCR (LBSC)
PCIECR (PCIC)
MIM (DDRIF)
INTC2B3 (INTC)
2. Issue the SYNCO instruction.
3. Set registers of all channels again.
If the AE bit in DMAOR0 is set to 1, channels 0 to 5 should be set again.
If the AE bit in DMAOR1 is set to 1, channels 6 to 11 should be set again.
14.5.3
Notes on Burst Mode Transfer
During a burst mode transfer, following operation should not be executed until the transfer of
corresponding channel has completed.
•
Frequency should not be changed.
•
Transition to sleep mode should not be made.
Содержание SH7780 Series
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Страница 1104: ...Section 27 NAND Flash Memory Controller FLCTL Rev 1 00 Dec 13 2005 Page 1054 of 1286 REJ09B0158 0100 ...
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