KSZ8873 Rev.A2 Errata Sheet Dear Customer, The following is the errata for the currently sampling KSZ8873, 3-Port Switch family. The following issues currently exhibited on the Revision-A2 silicon. Item Symptom 1 LinkMD not working in the Port 1 Comment Can not get the right LinkMD status in the register. Solution/Workaround Will be fixed in next revision 2 The rate will be double with tag insertion Will be fixed in next revision 3 MDC/MDIO can’t write MIIM register 0 bit 8, 12, 13 In the egress port rate limiting with tag insertion, the rate will be double Those bits are reserved in current datasheet. 4 RMII transmit timing is out of max delay time specification in the KSZ8873RLL Upon reset or warm reset, the start switch bit in Register 1 is cleared to ‘0’ in I2C master mode. The data delay time is 18ns, it is doesn’t affect to transfer data on RMII As the result, the switch doesn’t work in the I2C master mode. Will be fixed in next revision Port 1 Receiving Flow Control doesn’t take effect when port 1 receives Pause frame. As the result, the port 1 still transmit normal packets when receive pause frame. 5 6 MICREL CONFIDENTIAL Page1 Will be fixed in next revision Workaround solution: Set Register 78 (0x4E) bit 0 = ‘1’ when program the EEPROM. The I2C master mode will work fine. Workaround solution: Set Register 21 Port 1 Control 5 bit [7] = ‘1’ (this is a reserved bit). Port 1 Receiving Flow Control will work fine. 08/02/2013