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PCM2706C: HOST PIN

GARETH OU
Guru 10055 points
Part Number: PCM2706C
Other Parts Discussed in Thread: PCM2704C

Hi

Just curious is HOST pin only for more internal LDO current provide to external ROM or some other function?

Thanks

  • +1
    TI__Mastermind 18966 points

    Hi,

    HOST pin along with PSEL pin is dedicated to selecting the power source.This selection affects the configuration descriptor. While in bus-powered operation, the maximum power consumption from VBUS is determined by the HOST pin (pin21 for the PCM2704C/5C, pin 3 for thePCM2706C/7C). For self-powered operation, the HOST pin must be connected to VBUS of the USB bus with a pull-down resistor to detect attach and detach. (To avoid excessive, suspend current, the pull down should be a high-value resistor.) Table1 summarizes the power configuration select options

    Regards,

    AK