KSZ8041

DS80000700A-page 2

 2016 Microchip Technology Inc.

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.

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