Destination Transfer Step Size Register (Dst_Transfer_Step); Source/Destination Wrap Size Register (Src/Dst_Wrap_Size); Destination Transfer Step Size Register (Dst_Transfer_Step) Field Descriptions; Source/Destination Wrap Size Register (Src/Dst_Wrap_Size) Field Descriptions - Texas Instruments Concerto F28M35 Series Technical Reference Manual

Register Descriptions
11.8.15 Destination Transfer Step Size Register (DST_TRANSFER_STEP) — EALLOW
Protected
The destination transfer step size register (DST_TRANSFER_STEP) is shown in
described in Table
Figure 11-22. Destination Transfer Step Size Register (DST_TRANSFER_STEP)
15
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 11-17. Destination Transfer Step Size Register (DST_TRANSFER_STEP) Field Descriptions
Bit Field
15-0 DSTTRANSFERSTEP
11.8.16 Source/Destination Wrap Size Register (SRC/DST_WRAP_SIZE) — EALLOW protected)
The source/destination wrap size register is shown in
Figure 11-23. Source/Destination Wrap Size Register (SRC/DST_WRAP_SIZE)
15
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 11-18. Source/Destination Wrap Size Register (SRC/DST_WRAP_SIZE) Field Descriptions
Bit Field
15-0 WRAPSIZE
940
C28 Direct Memory Access (DMA) Module
11-17.
DSTTRANSFERSTEP
Value Description
These bits specify the destination address pointer post-increment/decrement
step size after processing a burst of data:
0x0FFF Add 4095 to address
... ...
0x0002 Add 2 to address
0x0001 Add 1 to address
0x0000 No address change
0xFFFF Sub 1 from address
0xFFFE Sub 2 from address
... ...
0xF000 Sub 4096 from address
Only values from -4096 to 4095 are valid.
Value Description
These bits specify the number of bursts to transfer before wrapping back to
begin address pointer:
0x0000 Wrap after 1 burst
0x0001 Wrap after 2 bursts
0x0002 Wrap after 3 bursts
... ...
0xFFFF Wrap after 65536 bursts
To disable the wrap function, set the WRAPSIZE bit field to a number larger than
the TRANSFERSIZE bit field.
Copyright © 2012–2019, Texas Instruments Incorporated
R/W-0
Figure 11-23 and described in
WRAPSIZE
R/W-0
SPRUH22I – April 2012 – Revised November 2019
www.ti.com
Figure 11-22 and
0
Table 11-18.
0
Submit Documentation Feedback