Freescale Semiconductor MPC5200B ユーザーズマニュアル
BestComm DMA Registers—MBAR+0x1200
MPC5200B Users Guide, Rev. 1
Freescale Semiconductor
13-23
13.15.26 SDMA task 0 & task Size 1 map
13.15.27 SDMA Reserved Register 1—MBAR + 0x1268
Bit
Name
Description
srcSize[1:0]
Each of the 16 tasks can be programmed to use the source and destination sizes
contained in one of the Task Size Registers. The task size information is used by the SDMA
module to determine the source and destination transfer size of the operands. When the
size contained the task descriptor is set to 2’b11 then the size field from the Task Size
Control register is selected.
contained in one of the Task Size Registers. The task size information is used by the SDMA
module to determine the source and destination transfer size of the operands. When the
size contained the task descriptor is set to 2’b11 then the size field from the Task Size
Control register is selected.
srcSize[1:0] - source size
00 - Word (32 bit)
01 - Byte
10 - Word
11 - Word
destSize[1:0] - destination size
00 - Word (32 bit)
01 - Byte
10 - Word
11 - Word
Table 13-27. SDMA task Size Map
Offset
Register Name
Byte 0
Byte 1
Byte 2
Byte 3
Access
0x1260
task Size 0
TS[0:1]
TS[2:3]
TS[4:5]
TS[5:7]
R/W
0x1264
task Size 1
TS[8:9]
TS[10:11]
TS[12:13]
TS[14:15]
R/W
Bit
Name
Description
See Table 13-26 for details. Each task has 4 bits allocated (2 for source and 2 for
destination Size)
destination Size)
Table 13-28. SDMA Reserved Register 4
msb 0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
res1
W
RESET:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31 lsb
R
res1
W
RESET:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit
Name
Description
0:31
res1
Reserved