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DDC line frequency

Question asked by wallman16 on Oct 24, 2012
Latest reply on Dec 18, 2012 by GuenterL

Hi ,

 

Device :ADV7511

 

We see that the DDC line frequency is 43kHz how is this frequency set is there way to change this frequency

 

With regards VIL and VIH for I2C ,

VIH = 1.19 - 5.5[V] High level

VIL =  -0.3 - 0.8[V] Low level

 

According to I2C-bus Specification, version2.1, Section 15

VIH  = 0.7VDD - (VDD+0.5)[V]

VIL  =  -0.5 - 0.3VDD[V]

 

And if Low signal with 1.5[V] then it is considered as H .

 

Is ADV7511 up with the specification of I2C .

 

Thanking you

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