AMC7812SPAPR Datasheet, PDF (59/92 Pages) Texas Instruments – 12-Bit Analog Monitoring and Control Solution with Multichannel ADC, DACs, and Temperature Sensors

AMC7812
www.ti.com
SBAS513E – JANUARY 2011 – REVISED SEPTEMBER 2013
CS
SDI-C
SDO-C
SDI-B
SDO-B
SDI-A
SDO-A
Cycle 0
RA0 WB0 RC0
XX RA0 WB0
XX RA0 WB0
XX XX RA0
XX XX RA0
XX XX XX
Cycle 1
RA1
CD0
CD0
XX
XX
AD0
WB1
RA1
RA1
CD0
CD0
XX
WC1
WB1
WB1
RA1
RA1
CD0
Cycle 2
RA2
XX
XX
XX
XX
AD1
RB2
RA2
RA2
XX
XX
XX
RC2
RB2
RB2
RA2
RA2
XX
Cycle 3
RA3
CD2
CD2
BD2
BD2
AD2
RB3
RA3
RA3
CD2
CD2
BD2
RC3
RB3
RB3
RA3
RA3
CD2
WBn (WCn) = Write Command for Register N of device A (B,C)
RAn (RBn, RCn) = Read Command for Register N of device A (B, C)
ADn (BDn, CDn) = Data from Register N of device A (B, C)
XX = Don’t care, undefined
Figure 110. Mixed Operation: Reading Devices A and C, and Writing to Device B; then Reading A, and
Writing to B and C; then Reading A, B, and C Twice
CS
SDI-C
SDO-C
SDI-B
SDO-B
SDI-A
SDO-A
Cycle 0
Cycle 1
Cycle 2
Cycle 3
WA0 WB0 RC0
XX WA0 WB0
XX WA0 WB0
XX XX WA0
XX XX WA0
WA1 WB1 RC1
CD0 WA1 WB1
CD0 WA1 WB1
XX CD0 WA1
XX CD0 WA1
WA2 WB2 RC2
CD1 WA2 WB2
CD1 WA2 WB2
XX CD1 WA2
XX CD1 WA2
WA3 WB3 RC3
CD2 WA3 WB3
CD2 WA3 WB3
XX CD2 WA3
XX CD2 WA3
XX XX XX
XX XX CD0
XX XX CD1
XX XX CD2
Figure 111. Writing to Devices A and B, and Reading Device C
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