Datasheet

LTC2634
24
2634fc
operation
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 A3 A2 A1 A0 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 X X X XC3
CS/LD
SCK
SDI
COMMAND WORD ADDRESS DATA WORD
24-BIT INPUT WORD
2634 F03a
Figure 3a. LTC2634-12 24-Bit Load Sequence (Minimum Input Word) LTC2634-10 SDI Data Word: 10-Bit Input Code + 6 Don’t Care Bits LTC2634-8 SDI Data Word: 8-Bit Input Code + 8 Don’t Care Bits
Figure 3b. LTC2634-12 32-Bit Load Sequence (Required for Daisy-Chain Operation) LTC2634-10 SDI Data Word: 10-Bit Input Code + 6 Don’t Care Bits LTC2634-8 SDI Data Word: 8-Bit Input Code + 8 Don’t Care Bits
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 A3 A2 A1 A0 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 X X X XC3XXXXXXXX
CS/LD
SCK
SDI
COMMAND WORD ADDRESS WORD DATA WORD
DON’T CARE
C2 C1 C0 A3 A2 A1 A0 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 X X X XC3XXXXXXXX
SDO
CURRENT
32-BIT
INPUT WORD
2634 F03b
PREVIOUS 32-BIT INPUT WORD
t
2
t
3
t
4
t
1
t
12
D11
17
SCK
SDI
SDO
PREVIOUS D10PREVIOUS D11
18
D10