MCF5xxx USB EHCI USBINR Reg Ref Manual bug

[TomE]

There may be a minor problem in the current Revision 3 MCF5329 Reference Manual. A quick check shows the same problem in the MCF5329, MCF5373, and MCF52277 manuals at least, so it looks like the manuals for all Coldfire chips with USB EHCI controllers might be affected.

For the MCF5329, the problem can be seen by comparing the following sections and tables:

1 - 21.3.3.2 USB Status Register (USBSTS) Figure 21-16. USB Status Register (USBSTS)

2 - 21.3.3.3 USB Interrupt Enable Register (USBINTR) Figure 21-17. USB Interrupt Enable Register (USBINTR)

Figure 21-17 looks to have been copy/pasted from Figure 21-16. The "SLI SRI URI AAI SEI FRI PCI UEI UI" bits in USBSTS are "write one to clear" bits and are marked "w1c". This is correct.

The "SLE SRE URE AAE SEE FRE PCE UEE UE" bits in the USBINTR register are ALSO marked as "w!c" (cut & paste?). These bits are all read-write and not "write one to clear". Checking the Intel EHCI specification confirms this:

- http://www.intel.com/technology/usb/download/ehci-r10.pdf

[J2MEJediMaster]

As usual, we appreciate your reports on possible documention problems. I've talked with the docs folk, and the best course of action is for you to submit an Service Request (SR) on these problems as you find them. This way, the issue gets logged into the tracking system and should not get lost in transition from the docs people and engineers. They can also come back to you for follow-up information, although your reports are quite detailed.

For the category on the SR page, I would choose Hardware Productr Support, as the Documentation category is more about finding lost documents and not reporting problems.

To file a SR, click here.

---Tom