Rainbow Electronics DS1086L - Manual (Page 14)

DS1086
DS1086 Spread-Spectrum EconOscillator
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Chip Topology
TRANSISTOR COUNT: 10,000
SUBSTRATE CONNECTED TO GROUND
Package Information
For the latest package outline information, go to
www.maxim-ic.com/packages.
SLAVE
ACK
1 0 1 1 R/W A0* A1*
SLAVE
ACK
A2*
MSB LSB
DEVICE IDENTIFIER DEVICE
ADDRESS
READ/
WRITE
MSB LSB
COMMAND/REGISTER ADDRESS
SLAVE
ACK
MSB LSB
b7 b6 b5 b4 b3 b2 b1 b0
SLAVE
ACK
STOP
*THE ADDRESS DETERMINED BY A0, A1, AND A2 MUST
MATCH THE ADDRESS SET IN THE ADDR REGISTER.
DATA
TYPICAL 2-WIRE WRITE TRANSACTION
EXAMPLE 2-WIRE TRANSACTIONS (WHEN A0, A1, AND A2 ARE ZERO)
A) SINGLE BYTE WRITE
-WRITE OFFSET REGISTER
B) SINGLE BYTE READ
-READ OFFSET REGISTER
C) TWO BYTE WRITE
-WRITE DAC REGISTER
D) TWO BYTE READ
-READ DAC REGISTER
START
START
START
START
START
B0h
B0h
B0h
B0h
SLAVE
ACK
SLAVE
ACK
SLAVE
ACK
SLAVE
ACK
0Eh
0Eh
08h
08h
SLAVE
ACK
SLAVE
ACK
SLAVE
ACK
SLAVE
ACK
DATA
SLAVE
ACK
STOP OFFSET 1 0 1 1 0 0 0 0
1 0 1 1 0 0 0 0
1 0 1 1 0 0 0 0
1 0 1 1 0 0 0 0 1 0 1 1 0 0 0 1
REPEATED
START
SLAVE
ACK
DAC MSB
MASTER
ACK
DAC LSB
DATA
MASTER
NACK
STOP
DATA B1h
b7 b6 b5 b4 b3 b2 b1 b0
0 0 0 0 1 1 1 0
0 0 0 0 1 1 1 0
0 0 0 0 1 0 0 0
0 0 0 0 1 0 0 0
REPEATED
START
DATA
OFFSET
MASTER
NACK
STOP
SLAVE
ACK
1 0 1 1 0 0 0 1
B1h
STOP
SLAVE
ACK
DAC LSB
DATA
SLAVE
ACK
DAC MSB
DATA
Figure 7. 2-Wire Transactions