Datasheet

DS1050
10 of 17
BLOCK DIAGRAM Figure 1
2-WIRE ADDRESSABLE SERIAL PORT OVERVIEW Figure 2
repeated if more bytes
are transferred
acknowledgement
signal from receiver
SCL
SDA
12 678
ACK
slave address
Start
Condition
9
Stop Condition
or repeated
Start Condi ti on
acknowledgement
signal from receiver
9
1
2
8
3-7
ACK
r/w
direction
bit
msb
COMMAND/CONTROL BYTE Figure 3
Serial Port
CONTROL LOGIC
OSCILLATOR
SCL
A2
A1
A0
SDA
DRIVER
v
cc
GND
SHUTDOWN
CONTROL
CIRCUITRY
PWM
O
Device
Identifie
r
Device
A
ddress
Read/Write
Bit
1
A
1
A
0
0 0
A
2r/w 1
msb
lsb