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Drive Strength of ADV7614 and ADV7612

Question asked by Hodaka on Aug 31, 2011
Latest reply on Sep 2, 2011 by Hodaka

Regarding Drive Strength of ADV7614 and ADV7612, I have some questions.


Please teach me.

 

Q1.
Now I set the following registers in ADV7614 and ADV7612 by same drive strength level 3X.

ADV7614
  DR_STR[1:0] = 10b (Medium high drive strength (3X) for LLC1 from 55 MHz to 105 MHz)
  DR_STR_CLK[1:0] = 10b (Medium high drive strength (3X) for LLC1 from 55 MHz to 105 MHz)
  DR_STR_SYNC[1:0] = 10b (Medium high drive strength (3X) for LLC1 from 55 MHz to 105 MHz)

 

ADV7612
  DR_STR[1:0] = 10b (Medium high (3X))
  DR_STR_CLK[1:0] = 10b (Medium high (3X) for LLC from 44 MHz to 105 MHz)
  DR_STR_SYNC[1:0] = 10b (Medium high (3X))

 

Then,
Does it have differences of performance between Drive Strength in ADV7614 and Drive Strength of ADV7612 ?

In addition,

Does it have differences of performance when other level(2X, 4X)

 

Q2.
If Q1 is yes, please teach me the following values.

 

[Output current of Drive Strength in ADV7614]
Medium low (2X):
  High Level Output Current =
  Low Level Output Current
Medium high (3X):
  High Level Output Current =
  Low Level Output Current
Hight (4X):
  High Level Output Current =
  Low Level Output Current

 

[Output current of Drive Strength in ADV7612]
Medium low (2X):
  High Level Output Current =
  Low Level Output Current
Medium high (3X):
  High Level Output Current =
  Low Level Output Current
Hight (4X):
  High Level Output Current =
  Low Level Output Current

 

Best regards.

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