Datasheet

10
LTC1588/LTC1589/LTC1592
1588992fa
Figure 1a. LTC1592 24-Bit Load Sequence (Minimum Input Word)
LTC1589 SDI Data Word = 14-Bit Input Code + 2 Don’t Care Bits at LSB Positions LTC1588 SDI Data Word = 12-Bit Input Code + 4 Don’t Care Bits at LSB Positions
OPERATIO
U
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
C2 C1 C0 X X X X D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0C3
CS/LD
SCK
SDI
CONTROL WORD DON’T CARE
(RESERVED)
DATA WORD Dn
24-BIT DATA STREAM (CANNOT BE DAISY-CHAINED)
1588992 F01a
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24 25 26 27 28 29 30 31 32
C2 C1 C0 X X X X D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0C3XXXXXXXX
CS/LD
SCK
SDI
CONTROL WORD DON’T CARE DATA WORD Dn
32-BIT DATA STREAM (CAN BE DAISY-CHAINED)
DON’T CARE
C2 C1 C0 X X X X D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0C3XXXXXXXX
SDO
CURRENT
32-BIT INPUT
WORD
1588992 F01b
PREVIOUS 32-BIT INPUT WORD
t
2
t
3
t
4
t
1
t
8
D15
17
SCK
SDI
SDO
PREVIOUS D14PREVIOUS D15
18
D14
Figure 1b. LTC1592 32-Bit Load Sequence (Required for Daisy-Chain Operation)
LTC1589 SDI/SDO Data Word = 14-Bit Input Code + 2 Don’t Care Bits at LSB Positions LTC1588 SDI/SDO Data Word = 12-Bit Input Code + 4 Don’t Care Bits at LSB Positions