ISL22444 Datasheet, PDF (15/19 Pages) Intersil Corporation – Quad Digitally Controlled Potentiometer XDCP

CS
SCK
MOSI
MISO
µC
DCP0
CS
SCK
SDI
SDO
ISL22444
N DCP IN A CHAIN
DCP1
CS
SCK
SDI
SDO
DCP2
CS
SCK
SDI
SDO
FIGURE 18. DAISY CHAIN CONFIGURATION
DCP(N-1)
CS
SCK
SDI
SDO
CS
SCK
SDI
SDO 0
SDO 1
SDO 2
16 CLKLS
WR D C P2
16 CLKS
WR D C P1
WR D C P2
16 CLKS
WR D C P0
WR D C P1
WR D C P2
FIGURE 19. DAISY CHAIN WRITE SEQUENCE OF N = 3 DCP
CS
SCK
SDI
SDO
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16
INSTRUCTION
ADDR
DATA IN
DATA OUT
FIGURE 20. TWO BYTE OPERATION
15
FN6426.0
May 24, 2007