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Question about addressing power device (TWL4030)

Xi
Prodigy 210 points
Other Parts Discussed in Thread: OMAP3530

Hi,

I am trying to communicate the power module (TWL4030) in OMAP3530 EVM in order to change the operation voltage based on our demand. The way I do is to directly access the configuring register "VDD1_VSEL" through I2C bus and change its value. The thing I want to know is the device address of TWL since I have already known the register address which is 0xB9. Could anyone tell me the address of the device or how exactly do I access the register? Appreciate it!

Thanks!

Xi