Broadcom USB 3380 AB vs AA summary of changes User guide

Broadcom
Brand
Broadcom
Model
USB 3380 AB vs AA summary of changes
Type
User guide
USB 3380 AB vs. AA Changes Summary
© PLX Technology, www.plxtech.com Page 1 of 1 06June12; v1.0
Introduction
USB 3380AB is a metal-only mask revision for USB 3380AA silicon. The AB silicon revision corrects a
number of issues that were found during testing and validation of the USB 3380AA device. These changes
are described below. Refer to the USB 3380 Errata documentation for details,
http://www.plxtech.com/products/usbcontrollers/usb3380.
USB 3380AA Documented Errata Corrected in USB 3380AB Silicon
Erratum #
Description
Risk
Category
Corrected in
AB
Err_1
Enabling ASPM L0s (and L1) on PCI Express ports causes
spurious ERR_CORR messages to be transmitted.
Low
No
Err_2
At the 5.0 GT/s signaling rate, USB 3380 transmitters apply 0
dB de-emphasis when they should apply -6 dB de-emphasis
Med
Yes
Err_3
Problems with SuperSpeed U1/U2 Link Power Management
Functions
Med
Yes
Err_4
Port 0 BAR0 address decode range is larger than requested
Low
Yes
Err_5
DMA channel for USB OUT endpoint may hang under
specific conditions
Med
Yes
Err_6
DMA channel for USB IN endpoint may hang under specific
conditions
Med
Yes
Err_7
PCIOUT endpoint may timeout too soon on PCI Express read
requests
Low
Yes
USB 3380AA Documented Cautions Corrected in USB 3380AB Silicon
Issue #
Description
Risk
Category
Corrected in
AB
Issue_1
USB link may occasionally fail to train at Super-Speed rate in
some cases.
Med
Yes
Issue_2
In Enhanced Adapter mode, Link Status registers for virtual
Port 2 and the USB Controller show incorrect values.
Low
Yes
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Broadcom USB 3380 AB vs AA summary of changes User guide

Broadcom
Brand
Broadcom
Model
USB 3380 AB vs AA summary of changes
Type
User guide
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