MAX4571 Maxim, MAX4571 Datasheet - Page 12

• Manufacturer Part Number: MAX4571
• Description: The MAX4571–MAX4574 serial-interface controlled switches are ideal for multimedia applications
• Manufacturer: Maxim

Serially Controlled, Clickless
Audio/Video Switches
Table 3. 2-Wire Serial-Interface Data Format
12
______________________________________________________________________________________
R
R
R
RESET
S
T
SWITCHSET
S
T
MODESET
S
T
X = Don't Care
SRT = Start Condition
ACK = Acknowledge Condition
Address Byte
MSB
Address Byte
MSB
MSB
MSB
MSB
Address Byte
MSB
MSB
MSB
MSB
MSB
MSB
MSB
MSB
MAX4571
MAX4572
MAX4571
MAX4572
0
0
0
Command
X
X
X
X
Command
1
Command
1
1
X
X
X
X
1
1
1
SW
SW
X
X
8
8
0
0
0
SW
SW
X
5
X
5
First Data Byte
First Data Byte
First Data Byte
First Data Byte
1
1
1
SW
SW
7B
7B
A
1
X
X
A
1
A
1
A
0
SW
SW
SW
SW
11
7A
11
7A
A
0
A
0
LSB
LSB
0
0
SW
SW
0
SW
SW
10
6B
10
6B
A
C
K
A
C
K
A
C
K
SW
SW
SW
SW
6A
6A
LSB
LSB
LSB
LSB
9
9
Command Byte (RESET)
MSB
0
Command Byte (SWITCHSET)
Command Byte (MODESET)
MSB
1
MSB
0
A
C
K
A
C
K
A
C
K
A
C
K
0
1
1
STP = Stop Condition
Logic "0" in any data bit location places the associated switch open or in soft (clickless) switching mode.
Logic "1" in any data bit location places the associated switch closed or in hard switching mode.
For command bit configuration see Table 1.
MSB
MSB
MSB
MSB
SW
SW
4B
SW
SW
4B
8
8
X
X
X
X
SW
SW
SW
SW
4A
4A
7
7
X
X
X
X
X
SW
SW
SW
SW
3B
3B
6
6
X
X
X
SW
SW
SW
SW
3A
3A
5
5
X
X
X
Second Data Byte
Second Data Byte
Second Data Byte
Second Data Byte
SW
SW
SW
SW
LSB
2B
2B
4
4
X
LSB
LSB
X
X
SW
SW
SW
SW
A
C
K
2A
2A
3
3
A
C
K
A
C
K
S
T
P
SW
SW
SW
SW
1B
1B
2
2
SW
SW
SW
SW
1A
1A
1
1
LSB
LSB
LSB
LSB
A
C
K
A
C
K
A
C
K
A
C
K
S
T
P
S
T
P
S
T
P
S
T
P