
MAXQ7667
16-Bit, RISC, Microcontroller-Based,
Ultrasonic Distance-Measuring System
______________________________________________________________________________________
31
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
—
A
P
(4
B
it
s
)
AP
0
CL
R
IDS
—
M
O
D2
M
O
D1
M
O
D0
AP
C
0
Z
S
—
G
P
F1
G
P
F0
O
V
C
E
PSF
1
0
—
CG
DS
—
INS
IG
E
IC
0
IMS
—
IM5
IM4
IM3
IM2
IM1
IM0
IMR
0
T
A
P
—
CDA
1
CDA
0
—
R
O
D
P
W
L
—
SC
1
0
s
*
0
IIS
—
II5
II4
II3
II2
II1
II0
IIR
0
XT
R
C
—
R
G
M
D
ST
O
P
SWB
PM
M
E
C
D
1
C
D
0
CK
CN
s
*0
0
P
O
R
E
W
D
I
W
D
1
W
D
0
W
D
IF
W
T
R
F
E
W
T
R
W
T
W
DCN
s
*
s
*0
0
s
*s
*
0
A
[n]
(
16
B
it
s
)
A
[n]
(
0
..15)
0
P
F
X
[n]
(
16
B
its
)
PF
X[n
](0
..
7
)
0
IP
(
16
B
it
s
)
IP
1
0
—
S
P
(4
B
its
)
SP
0
1
IV
(
16
B
it
s
)
IV
0
L
C
[0
](1
6
B
it
s
)
L
C
[0
]
0
L
C
[1
](1
6
B
it
s
)
L
C
[1
]
0
Table
2.
System
Register
Bit
and
Reset
Values
*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.