ISL22414 Datasheet, PDF (14/16 Pages) Intersil Corporation – Single Digitally Controlled Potentiometer

CS
SCK
MOSI
MISO
µC
DCP0
CS
SCK
SDI
SDO
ISL22414
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
CS
SCK
SDI
SDO
FIGURE 19. DAISY CHAIN WRITE SEQUENCE OF N = 3 DCP
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
14
FN6424.1
December 16, 2010