LSB
0000
x
MSB
0000
0001
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
rdata
x
rdatac
x
x
x
x
x
x
x
x
x
x
x
stopc
rreg
0
rreg
1
rreg
2
rreg
3
rreg
4
rreg
5
rreg
6
rreg
7
rreg
8
rreg
9
rreg
A
rreg
B
rreg
C
rreg
D
rreg
E
rreg
F
0010
rram
0
rram
1
rram
2
rram
3
rram
4
rram
5
rram
6
rram
7
x
x
x
x
x
x
x
x
0011
0100
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
creg
0
creg
1
creg
2
creg
3
creg
4
creg
5
creg
6
creg
7
crega
0101
0110
wreg
0
wreg
1
wreg
2
wreg
3
wreg
4
wreg
5
wreg
6
wreg
7
wreg
8
wreg
9
wreg
A
wreg
B
wreg
C
wreg
D
wreg
E
wreg
F
wram
0
wram
1
wram
2
wram
3
wram
4
wram
5
wram
6
wram
7
x
x
x
x
x
x
x
x
0111
1000
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
rf2r
0
rf2r
1
rf2r
2
rf2r
3
rf2r
4
rf2r
5
rf2r
6
rf2r
7
rf2r
8
rf2r
9
rf2r
A
rf2r
B
rf2r
C
rf2r
D
rf2r
E
rf2r
F
1001
1010
1011
rf2r
10
rf2r
11
rf2r
12
rf2r
13
rf2r
14
rf2r
15
rf2r
16
rf2r
17
rf2r
18
rf2r
19
rf2r
1A
rf2r
1B
rf2r
1C
rf2r
1D
rf2r
1E
rf2r
1F
wr2f
0
wr2f
1
wr2f
2
wr2f
3
wr2f
4
wr2f
5
wr2f
6
wr2f
7
wr2f
8
wr2f
9
wr2f
A
wr2f
B
wr2f
C
wr2f
D
wr2f
E
wr2f
F
wr2f
10
wr2f
11
wr2f
12
wr2f
13
wr2f
14
wr2f
15
wr2f
16
wr2f
17
wr2f
18
wr2f
19
wr2f
1A
wr2f
1B
wr2f
1C
wr2f
1D
wr2f
1E
wr2f
1F
1100 cram 0 cram 1 cram 2 cram 3 cram 4 cram 5 cram 6 cram 7
x
x
x
x
x
x
x
x
x
x
x
x
x
x
1101
csreg
csramx csramx csramx csramx csramx csramx csramx csramx csramx
0
1
2
3
4
5
6
7
1110
1111
x
x
x
x
x
x
csfl
x
x
x
x
csram 0 csram 1 csram2 csram 3 csram 4 csram 5 csram 6 csram 7 csram
self
cal
self
ocal
self
gcal
sys
ocal
sys
gcal
x
x
x
x
dsync
sleep
reset
x = Reserved
TABLE IV. ADS1218 Command Map.
ADS1218
24
SBAS187