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Port D Pin | Alternate Function | Alternate Function is Selected By... | Alternate Function is Described in... |
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PD[7:0] | FD[15:8] | IFCFG1 = 1 and any WORDWIIDE bit = 1 | Slave FIFOs chapter 9 on page 99 |
Table from EZ-USB(R) Technical Reference Manual (EZ-USB_TRM.pdf).
Power-rail 3.3V is not controlled by signal PS_EN and is unconditionally enabled.
Figure 37: Power rails 3.3V could not be enabled/disabled by signal PS_EN.
According to the corresponding assembly option, power rail VCCCIO0 can depend or not on the power rail 2.5V.
Figure 37: example of VCCIO0 assembly not dependent on 2.5V power rail. The other way is also possible.
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