st20-gp1 STMicroelectronics, st20-gp1 Datasheet - Page 55
st20-gp1
Manufacturer Part Number
st20-gp1
Description
Gps Processor
Manufacturer
STMicroelectronics
Datasheet
1.ST20-GP1.pdf
(116 pages)
- Current page: 55 of 116
- Download datasheet (734Kb)
Key:
The EMI buffers subsequent transactions which may occur, without intervening dead cycles except
Bus
width
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
L = low for whole access
H = high for whole access
A = active on write accesses
I = inactive for whole access
Table 9.3 Transaction composition for valid bytes on internal memory bus
Valid
bytes
<3:0>
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Number of
accesses
required
1
1
2
1
2
2
3
1
2
2
3
2
3
3
4
1
1
1
1
2
2
2
1
2
2
2
1
2
2
2
1
L
L
L
H
L
L
L
H
L
L
L
H
L
L
L
L
L
L
H
L
L
L
H
L
L
L
H
L
L
L
MemAddr1
2
-
-
L
-
H
H
L
-
H
H
L
H
H
H
L
-
-
-
-
H
H
H
-
H
H
H
-
H
H
H
3
-
-
-
-
-
-
H
-
-
-
H
-
H
H
H
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
4
-
-
-
-
-
-
-
-
-
-
-
-
-
-
H
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1
L
H
L
L
L
H
L
H
L
H
L
L
L
H
L
I
A
A
I
I
A
A
A
I
A
A
A
I
A
A
notMemWB1
2
-
-
H
-
L
L
H
-
H
H
H
H
L
L
H
-
-
-
-
I
I
I
-
A
A
A
-
A
A
A
3
-
-
-
-
-
-
L
-
-
-
H
-
H
H
L
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
4
-
-
-
-
-
-
-
-
-
-
-
-
-
-
H
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
I
A
A
A
I
A
I
A
I
A
A
A
I
A
notMemWB0
2
-
-
A
-
A
A
A
-
A
A
A
A
A
A
A
-
-
-
-
A
A
A
-
I
I
I
-
A
A
A
3
-
-
-
-
-
-
A
-
-
-
A
-
A
A
A
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
ST20-GP1
4
-
-
-
-
-
-
-
-
-
-
-
-
-
-
A
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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