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SDMA Register Manual
Bits
Field Name
Description
Type
Reset
6:4
NEXT_DESCRIPTOR_TYPE
Next Descriptor Type
RW
0x0
0x0: Undefined
0x1: Next descriptor is of type 1.
0x2: Next descriptor is of type 2.
0x3: Next descriptor is of type 3.
0x4: Undefined
0x5: Undefined
0x6: Undefined
0x7: Undefined
3:2
SRC_VALID
Source address valid
RW
0x0
0x0: The source address is not present in the next
descriptor and continuous incrementing is enabled.
0x1: The source address must be reloaded in the next
descriptor transfer.
0x2: The source start address is not present in the next
descriptor. But will reload the one from configuration
memory which belongs to the previous descriptor.
0x3: Undefined addressing mode
1:0
DEST_VALID
Destination address valid
RW
0x0
0x0: The destination address is not present in the next
descriptor and continuous incrementing is enabled.
0x1: The destination address must be reloaded in the
next descriptor transfer.
0x2: The destination start address is not present in the
next descriptor. But will reload the one from configuration
memory which belongs to the previous descriptor.
0x3: Undefined addressing mode
Table 11-73. Register Call Summary for Register DMA4_CDPi
SDMA Functional Description
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•
:
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Linked-List Control and Monitoring
[3] [4] [5] [6] [7] [8] [9] [10] [11]
SDMA Register Manual
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:
Table 11-74. DMA4_CNDPi
Address Offset
0x0000 00D4 + (i* 0x60)
index:
i = 0 to 31
Physical Address
Instance
SDMA
0x4805 60D4 + (i* 0x60)
Description
This register contains the next descriptor address pointer for the link list Mechanism
Type
RW
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
NEXT_DESCRIPTOR_POINTER
RESERVED
Bits
Field Name
Description
Type
Reset
31:2
NEXT_DESCRIPTOR_POINTER
Next descriptor address pointer for the link list
RW
0x--------
mechanism
1:0
RESERVED
Write 0's for future compatibility. Reads return 0
RW
0x0
2401
SWPU177N – December 2009 – Revised November 2010
SDMA
Copyright © 2009–2010, Texas Instruments Incorporated