st20-gp6 STMicroelectronics, st20-gp6 Datasheet - Page 15

• Manufacturer Part Number: st20-gp6
• Description: Gps Processor
• Manufacturer: STMicroelectronics

For channels 0 and 1, RTCA-SC159 satellite codes can also be selected. This is achieved by set-
ting the PRNcode0-11 register appropriately and also writing the initial value for the satellite to the
a. Refer to the US DoD document ICD-GPS-200.
b. It is the responsibility of the software to ensure that when this value is selected, a suitable
value has been written into the
standard GPS satellite, the
Satellite ID
WAAS
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
9
-
-
-
-
-
b
Table 3.3 PRNcode0-11 register value
PRNcode0-11
register value
PRNinitialVal0-1
#62
#73
#04
#15
#11
#22
#01
#12
#23
#32
#43
#65
#76
#07
#18
#29
#41
#52
#63
#74
#05
#16
#31
#64
#75
#06
#17
#28
#61
#72
#03
#14
#25
#24
#71
#02
#24
#20
PRNinitialVal0-1
must be set to all ones (#3FF).
Taps selected from G2 shift register
by bits 6 to 4
register. If this channel is later used for a
10
10
10
10
10
10
10
10
6
7
8
9
9
8
9
3
4
6
7
8
9
4
5
6
7
8
9
3
6
7
8
9
6
7
8
9
7
8
by bits 3 to 0
2
3
4
5
1
2
1
2
3
2
3
5
6
7
8
9
1
2
3
4
5
6
1
4
5
6
7
8
1
2
3
4
5
4
1
2
4
0
a
ST20-GP6
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