KSZ8041 Datasheet, PDF (2/4 Pages) Microchip Technology – KSZ8041 Silicon Errata and Data Sheet Clarification

KSZ8041
TABLE 2: SILICON ISSUE SUMMARY
Item
Number
Silicon Issue Summary
1.
Receiver error in 100BASE-TX mode following software power down
2.
Pin Strapping failures due to 1.8V core power slow ramp-up
Silicon Errata Issues
Module 1: Receiver error in 100BASE-TX mode following software power down
DESCRIPTION
Some KSZ8041 devices may exhibit receiver errors after the software power down bit (register 0h, bit 11), is set and
then cleared. The problem only occurs following software power down. There is no issue following power up or hardware
reset.
END USER IMPLICATIONS
When the failure occurs:
• The RXER pin is asserted randomly
• The RXER counter (register 15h) increments
• The RXER interrupt bit (register 1Bh, bit 6) is set
• 100BASE-TX receive side exhibits errors (transmit side functions properly)
• 10BASE-T transmit and receive function properly
The only ways to exit the failure condition are:
• Cycle power off and on
• Set and clear the software power down bit (this method may resolve the issue, but is not guaranteed)
Work around
It is recommended to not use the software power-down feature.
PLAN
This errata will not be covered in a future revision.
DS80000700A-page 2
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