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SDMA Functional Description
Table 11-9. Type 1
3
3
2
2
2
2
2
2
2
2
2
2
1
1
1
1
1
1
1
1
1
1
9
8
7
6
5
4
3
2
1
0
1
0
9
8
7
6
5
4
3
2
1
0
9
8
7
6
5
4
3
2
1
0
Ptr+
CCR
0x2C
Ptr+
CLNK_CTRL
0x28
Ptr+
CSDP
0x24
Ptr+
COLOR
0x20
Ptr+
Src_Frame_index/Src_Packet_size
0x1C
Ptr+
Dst_Frame_index/Dst_Packet_size
0x18
Ptr+
Src_Element_index
Dst_Element_index
0x14
Ptr+
CICR (interrupt events Mask)
CFN Frame Number
0x10
Ptr+
Destination_Start_Address
0xC
Ptr+
Source_Start_Address
0x8
Ptr+
N_type
B
Dv
Sv
Element_number
0x4
Ptr
Next_descriptor_address_pointer
R
P
sv
11.4.19.3.2 Type 2
A type 2 descriptor includes the overall logical channel transfer address register and transfer format
register to be loaded. This descriptor enables 2D addressing linked-list transfer (for example, a multimedia
application where 2D objects are moved in a link).
shows a type 2 descriptor with source and
destination address updates.
shows a type 2 descriptor with one source or destination
address update.
Table 11-10. Type 2 With Source and Destination Address Updates
3
3
2
2
2
2
2
2
2
2
2
2
1
1
1
1
1
1
1
1
1
1
9
8
7
6
5
4
3
2
1
0
1
0
9
8
7
6
5
4
3
2
1
0
9
8
7
6
5
4
3
2
1
0
Ptr+
Src_Frame_index/Src_Packet_size
0x1C
Ptr+
Dst_Frame_index/Dst_Packet_size
0x18
Ptr+
Src_Element_index
Dst_Element_index
0x14
Ptr+
CICR (interrupt events Mask)
CFN Frame Number
0x10
Ptr+
Destination_Start_Address
0xC
Ptr+
Source_Start_Address
0x8
Ptr+
N_type
B
Dv
Sv
Element_number
0x4
Ptr
Next_descriptor_address_pointer
R
P
sv
2363
SWPU177N – December 2009 – Revised November 2010
SDMA
Copyright © 2009–2010, Texas Instruments Incorporated