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How the I2C Bus Works - EEWeb

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Totem Pole Output I 2 C I/O Expanders - Example<br />

Input<br />

Reg#<br />

1<br />

1<br />

0<br />

0<br />

0<br />

1<br />

0<br />

1<br />

Polarity<br />

Reg#<br />

0<br />

0<br />

0<br />

1<br />

1<br />

1<br />

0<br />

0<br />

Read Read/<br />

Write<br />

Config<br />

Reg#<br />

Output<br />

Reg#<br />

Semiconductors 39<br />

1<br />

0<br />

0<br />

0<br />

1<br />

1<br />

1<br />

0<br />

Read/<br />

Write<br />

X<br />

1<br />

0<br />

1<br />

X<br />

X<br />

X<br />

1<br />

Read/<br />

Write<br />

I/O’s<br />

1<br />

1<br />

0<br />

1<br />

1<br />

0<br />

0<br />

1

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