Serially Controlled, Clickless

Audio/Video Switches

______________________________________________________________________________________

13

SCL

SDA

START CONDITION

STOP CONDITION

REPEATED START CONDITION

START CONDITION

20%

70%

20%

70%

20%

70%

20%

70%

20%

70%

20%

70%

20%

70%

70%

20%

70%

70%

70%

Figure 3. 2-Wire Serial-Interface Timing Diagram

START CONDITION

STOP CONDITION

FIRST DATA BYTE

SECOND DATA BYTE

COMMAND BYTE

ADDRESS BYTE

SCL

SDA

MSB

MSB

MSB

MSB

LSB

LSB

LSB

LSB

ACK

ACK

ACK

ACK

Figure 4. A Complete 2-Wire Serial-Interface Transmission

Table 4. 3-Wire Serial-Interface Data Format

D15

C1

D14

C0

D12

X

D13

X

D10

SW11

D11

D8

SW9

X

D9

SW10

D6

SW7

D7

D4

SW5

SW8

D5

SW6

D2

SW3

MAX4573 (11 SPST)

D3

D0

SW1

SW4

D1

SW2

COMMAND

SWITCH CONTROL

MSB

LSB

COMMAND

D14

C0

D15

D12

SW5

C1

D13

SW8

D10

SW7A

D11

D8

SW6A

SW7B

SWITCH CONTROL

D9

SW6B

D6

SW4A

D7

D4

SW3A

SW4B

D5

SW3B

D2

SW2A

MAX4574 (6 SPDT + 2 SPST)

D3

D0

SW1A

SW2B

MSB

LSB

D1

SW1B