Datasheet

AD5372/AD5373
Rev. C | Page 22 of 28
CHANNEL ADDRESSING AND SPECIAL MODES
If the mode bits are not 00, the data-word D15 to D0 (AD5372)
or D13 to D0 (AD5373) is written to the device. Address Bit A5
to Address Bit A0 determine which channels are written to, and
the mode bits determine to which register (X1A, X1B, C, or M)
the data is written, as shown in Tabl e 13 and Table 14. D
ata is to
be wr
itten to the X1A register when the
A
/B bit in the control
register is 0, or to the X1B register when the
A
/B bit is 1.
The AD5372/AD5373 have very flexible addressing that allows
the writing of data to a single channel, all channels in a group,
the same channel in Group 0 to Group 3, the same channel in
Group 1 to Group 3, or all channels in the device. Table 14 shows
which groups and which channels are addressed for every
combination of Address Bit A5 to Address Bit A0.
Table 13. Mode Bits
M1 M0 Action
1 1 Write to DAC data (X) register
1 0 Write to DAC offset (C) register
0 1 Write to DAC gain (M) register
0 0
Special function, used in combination with other
bits of the data-word
Table 14. Group and Channel Addressing
Address Bit A5 to Address Bit A3
Address Bit A2
to Address Bit A0
000 001 010 011 100 101 110 111
000 All groups,
all channels
Group 0,
Channel 0
Group 1,
Channel 0
Group 2,
Channel 0
Group 3,
Channel 0
Reserved Group 0,
Group 1,
Group 2,
Group 3;
Channel 0
Group 1,
Group 2,
Group 3;
Channel 0
001 Group 0, all
channels
Group 0,
Channel 1
Group 1,
Channel 1
Group 2,
Channel 1
Group 3,
Channel 1
Reserved Group 0,
Group 1,
Group 2,
Group 3;
Channel 1
Group 1,
Group 2,
Group 3;
Channel 1
010 Group 1, all
channels
Group 0,
Channel 2
Group 1,
Channel 2
Group 2,
Channel 2
Group 3,
Channel 2
Reserved Group 0,
Group 1,
Group 2,
Group 3;
Channel 2
Group 1,
Group 2,
Group 3;
Channel 2
011 Group 2, all
channels
Group 0,
Channel 3
Group 1,
Channel 3
Group 2,
Channel 3
Group 3,
Channel 3
Reserved Group 0,
Group 1,
Group 2,
Group 3;
Channel 3
Group 1,
Group 2,
Group 3;
Channel 3
100 Group 3, all
channels
Group 0,
Channel 4
Group 1,
Channel 4
Group 2,
Channel 4
Group 3,
Channel 4
Reserved Group 0,
Group 1,
Group 2,
Group 3;
Channel 4
Group 1,
Group 2,
Group 3;
Channel 4
101 Reserved Group 0,
Channel 5
Group 1,
Channel 5
Group 2,
Channel 5
Group 3,
Channel 5
Reserved Group 0,
Group 1,
Group 2,
Group 3;
Channel 5
Group 1,
Group 2,
Group 3;
Channel 5
110 Reserved Group 0,
Channel 6
Group 1,
Channel 6
Group 2,
Channel 6
Group 3,
Channel 6
Reserved Group 0,
Group 1,
Group 2,
Group 3;
Channel 6
Group 1,
Group 2,
Group 3;
Channel 6
111 Reserved Group 0,
Channel 7
Group 1,
Channel 7
Group 2,
Channel 7
Group 3,
Channel 7
Reserved Group 0,
Group 1,
Group 2,
Group 3;
Channel 7
Group 1,
Group 2,
Group 3;
Channel 7