
MAXQ7667
16-Bit, RISC, Microcontroller-Based,
Ultrasonic Distance-Measuring System
32
______________________________________________________________________________________
R
E
G
IST
ER
B
IT
R
E
G
IST
ER
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
OF
F
S
(8
B
it
s
)
O
FFS
0
—
W
B
S
2
W
B
S
1
W
B
S
0
S
D
P
S
1
S
D
P
S
0
DP
C
0
1
0
G
R
15
G
R
14
G
R
13
G
R
12
G
R
11
G
R
10
G
R
9
G
R
8
G
R
7
G
R
6
G
R
5
G
R
4
G
R
3
G
R
2
G
R
1
G
R
0
GR
0
G
R
L7
G
R
L6
G
R
L5
G
R
L4
G
R
L3
G
R
L2
G
R
L1
G
R
L0
GR
L
0
B
P
(
16
B
its
)
BP
0
GR
S
1
5
GR
S
1
4
GR
S
1
3
GR
S
1
2
GR
S
1
GR
S
1
0
GR
S
9
GR
S
8
GR
S
7
GR
S
6
GR
S
5
GR
S
4
GR
S
3
GR
S
2
GR
S
1
GR
S
0
GR
S
0
G
R
15
G
R
14
G
R
13
G
R
12
G
R
11
G
R
10
G
R
9
G
R
8
GR
H
0
G
R
X
L15
G
R
X
L14
G
R
X
L13
G
R
X
L12
G
R
X
L11
G
R
X
L10
G
R
X
L9
G
R
X
L8
G
R
X
L7
G
R
X
L6
G
R
X
L5
G
R
X
L4
G
R
X
L3
G
R
X
L2
G
R
X
L1
G
R
X
L0
GR
X
L
0
FP
(
16
B
it
s
)
FP
0
D
P
[0
](1
6
B
it
s
)
D
P
[0
]
0
D
P
[1
](1
6
B
it
s
)
D
P
[1
]
0
Table
2.
System
Register
Bit
and
Reset
Values
(continued)
*Bits
indicated
by
an
“s”
are
only
affected
by
a
POR
and
not
by
other
forms
of
reset.
These
bits
are
set
to
0
after
a
POR.
Refer
to
the
MAXQ7667
User’s
Guide
for
more
information.