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about HDMI register definition "Override" bit

Question asked by Wally Yeh on Jan 14, 2014
Latest reply on Feb 4, 2014 by Wally Yeh

Good day, every one:

    I want to change the register value about Clock Symbol and Transmitter Control(HDMI_PHY_CKSYTXCTRL).

and have been read these:

pdf A : "i.MX 6Dual 6Quad Applications Processor Reference Manual" rev. 1

pdf B : "i.MX 6 Series HDMI Test Method for Eye Pattern and Electrical Characteristics"

(download form http://www.google.com.tw/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0CDkQFjAA&url=http%3A%2F%2Fcache.freescale.com%2Ff…)

 

and I can not understand the meaning about 15th bit (Override) at pdf A, page 1821.

 

the description is all blank, I think this bit may just the same as pdf A, page 1811:

"If the Override bit is set to 1, the working value is the Override bit value, not the registered value."

 

* so if I set override bit to "1", all other bits will force to "1"? *

 

a example in pdf B, page 6. teach me how to set register HDMI_PHY_CKSYTXCTRL(register 0x09) for value 0x800Dh.

 

why I need set the override bit to "1"? does it also work if I set register 0x09 to 0x000Dh?

 

any hint or explanation wolud be appreciated, thanks.

Outcomes