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• The scenario is: as a Completer,<br />

− It receives a Unsupported <strong>Request</strong> TLP from the original transaction <strong>Request</strong>er (or<br />

Initiator)<br />

− It can send an ERR_FATAL or ERR_NONFATAL Error Message (depending on severity<br />

setting) toward RC, if error reporting is enabled with either Command Register<br />

[SERR_EN] or Device Control Register [URR and FER or NFER], regardless the TLP<br />

type<br />

− It may return a Completion with UR status if the UR TLP type is Non-Posted<br />

<strong>Request</strong>er Completer<br />

Root<br />

Complex<br />

or<br />

Switch<br />

TM<br />

UR<br />

Completion<br />

TLP<br />

MRd <strong>Request</strong><br />

ERR_x<br />

Message<br />

TLP<br />

PCIe Error Message<br />

39<br />

I am here!<br />

I am going to<br />

treat you as UR!<br />

End<br />

point<br />

Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, ColdFire+, C-Ware, the Energy Efficient Solutions logo, Kinetis,<br />

mobileGT, PowerQUICC, Processor Expert, QorIQ, Qorivva, StarCore, Symphony and VortiQa are trademarks of Freescale Semiconductor, Inc.,<br />

Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, CoreNet, Flexis, MagniV, MXC, Platform in a Package, QorIQ Qonverge, QUICC Engine,<br />

Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, Vybrid and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All<br />

other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc.

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