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Altera_Forum
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11 years ago

Arrow SoCKit: HSMC_REF_CLK (100MHz) Not Working

@moderator: I found one other thread in this former that mentioned the HSMC_REF_CLK on the Arrow SoCKit and managed to post my question there, but (1) that was somewhat rude to hijack this persons th...
Altera_Forum's avatar
Altera_Forum
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11 years ago

Definitely sounds like a problem with the Si5338. I'm using that part on a current project (custom board design, not the SoCKit). If the part is not programmed with a default configuration before being soldered to the board then it comes up with all outputs disabled and needs to be initialized via I2C. The I2C interface is controlled by the SoC on SoCKit, so at least you have the ability to fix this. The thing has a ton of registers but the ClockBuilder software from Silicon Labs is pretty easy to use and generates the register values for you.