A1
L
L
H
H
L
L
H
H
L
L
H
H
X
X
X
X
A0
L
H
L
H
L
H
L
H
L
H
L
H
X
X
X
X
R/
W
L
L
L
L
L
L
L
L
H
H
H
H
X
X
X
X
CS
L
L
L
L
L
L
L
L
L
L
L
L
H
H
X
H
RS
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
↑
LDAC
L
L
L
L
H
H
H
H
H
H
H
H
L
H
X
X
Input
reg
Write
Write
Write
Write
Write
Write
Write
Write
Read
Read
Read
Read
Hold
Hold
Output
reg
Write
Write
Write
Write
Hold
Hold
Hold
Hold
Hold
Hold
Hold
Hold
Mode
Write
Write
Write
Write
Write input
Write input
Write input
Write input
Read input
Read input
Read input
Read input
DAC
A
B
C
D
A
B
C
D
A
B
C
D
ALL
ALL
ALL
ALL
Update all output registers
Hold
Hold
* All registers reset to mid/zero scale
* All registers latched to mid/zero scale
* Device types 01 and 02 reset to midscale, and device types 03 and 04 reset to zero scale.
L = Low
H = High
X = Don’t care
FIGURE 2. Truth table.
STANDARD
MICROCIRCUIT DRAWING
DLA LAND AND MARITIME
COLUMBUS, OHIO 43218-3990
DSCC FORM 2234
APR 97
SIZE
A
REVISION LEVEL
5962-91764
SHEET
B
9
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