Manual

315
6264A–CAP–21-May-07
AT91CAP9S500A/AT91CAP9S250A
26.5.4 DMAC Software Chunk Transfer Request Register
Name: DMAC_CREQ
Access: Read/Write
Reset Value: 0x00000000
• DCREQ[i]
Request a destination chunk transfer on channel i.
•SCREQ[i]
Request a source chunk transfer on channel i.
26.5.5 DMAC Software Last Transfer Flag Register
Name: DMAC_LAST
Access: Read/Write
Reset Value: 0x00000000
•DLAST[i]
Writing one to DLAST[i] prior to writing one to DSREQ[i] or DCREQ[i] indicates that this destination request is the last trans-
fer of the buffer.
•SLAST[i]
Writing one to SLAST[i] prior to writing one to SSREQ[i] or SCREQ[i] indicates that this source request is the last transfer of
the buffer.
31 30 29 28 27 26 25 24
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23 22 21 20 19 18 17 16
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15 14 13 12 11 10 9 8
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76543210
DCREQ3 SCREQ3 DCREQ2 SCREQ2 DCREQ1 SCREQ1 DCREQ0 SCREQ0
31 30 29 28 27 26 25 24
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23 22 21 20 19 18 17 16
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15 14 13 12 11 10 9 8
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76543210
DLAST3 SLAST3 DLAST2 SLAST2 DLAST1 SLAST1 DLAST0 SLAST0