MAX5842 Maxim, MAX5842 Datasheet - Page 13

• Manufacturer Part Number: MAX5842
• Description: Quad / 12-Bit / Low-Power / 2-Wire / Serial Voltage-Output DAC
• Manufacturer: Maxim

Table 3. Command Byte Definitions (continued)
Figure 8. Example Read Word Data Sequence
C3
1
1
1
1
1
1
C2
1
1
1
1
1
1
S
Sr
MSB
MSB
A6
D7
MSB
C1
A6
1
1
1
1
1
1
A5
D6
______________________________________________________________________________________
A5
SERIAL DATA INPUT
C0
Quad, 12-Bit, Low-Power, 2-Wire, Serial
0
1
1
1
1
1
A4
D5
A4
D11
A3
D4
X
0
0
0
0
1
A3
A2
D3
A2
DATA BYTES GENERATED BY MAX5842
DATA BYTES GENERATED BY MASTER DEVICE
D10
X
0
0
0
1
0
A1
D2
A1
A0
D1
A0
D9
X
0
0
1
0
0
R/W
LSB
LSB
D0
= 0
R/W
LSB
= 1
ACK
ACK
D8
ACK
X
0
1
0
0
0
MSB
C3
P
MSB
Update all DAC outputs simultaneously. Device ignores
D11-D8. Do not send the data byte.
E xtend ed com m and m od e. The next w or d w r i tes to the p ow er -
d ow n r eg i ster s ( E xtend ed C om m and M od e) .
Read DAC A data. The device expects an S
followed by an address word with R/W = 1.
Read DAC B data. The device expects an S
followed by an address word with R/W = 1.
Read DAC C data. The device expects an S
followed by an address word with R/W = 1.
Read DAC D data. The device expects an S
followed by an address word with R/W = 1.
X
C2
Voltage-Output DAC
X
C1
PD1
ACK GENERATED BY
C0
PD0
MASTER DEVICE
D11
D11
FUNCTION
D10
D10
D9
D9
LSB
D8
LSB
D8
r
r
r
r
condition
condition
ACK
condition
condition
ACK
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