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Table 4-3 EMI Memory Accesses and Locations Per Word (Continued)
Addressing
Bus Width
Relative
Relative
Relative
Relative
Relative
Relative
Absolute
Absolute
Absolute
Absolute
Absolute
Absolute
Absolute
Absolute
Absolute
Absolute
Absolute
Absolute
4.2.7.2
EMI Word Length (EWL[2:0])—Bits 16,2, and 1
The read/write control bits EMI Word Length (EWL[2:0]) select the length of the data
word to be transferred. The encoding of EWL[2:0] is shown in Table 4-4 .
Note: EWL[2:0] are cleared by hardware reset and software reset.
EWL2
EWL1
0
0
MOTOROLA
Word Length
8
8
8
8
8
8
16 Data/24 Address
4
4
4
4
4
4
16 Data/24 Address
8
8
8
8
8
8
16 Data/24 Address
Table 4-4 EMI Word Length
EWL0
0
0
0
1
DSP56009 User's Manual
External Memory Interface
EMI Programming Model
Memory
locations/
word
8
12
16
20
24
8
12
16
20
24
8
12
16
20
24
Word Length
8-bit data word
16-bit data word
Memory
accesses/
word
1
1
2
2
2
2
4
3
4
3
4
2
2
2
3
3
4
4
5
5
6
6
4
4
1
1
2
2
2
2
3
3
3
3
2
2
4-11
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