T1042NXE7MQB - when configured w/ four PCIe ports, do all need to use the same PLL input, i.e. PLL1?

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T1042NXE7MQB - when configured w/ four PCIe ports, do all need to use the same PLL input, i.e. PLL1?

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bradfordsmith
Contributor I

Using the T1042, I must communicate w/ 4 PCIe endpoints. All four are x1 PCIe ports, but 2 of them use a 125MHz REFCLK and the other 2 use a 100MHz REFCLK. It appears that this cannot be done with this device, that is, it appears that PCIe ports always use PLL1.

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ufedor
NXP Employee
NXP Employee

> it appears that PCIe ports always use PLL1.

Correct.

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