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VSC8211 Evaluation Board
User Guide
Revision 1.0
December 2013
Vitesse Proprietary
Page 13 of 13
3.5
Useful Registers
3.5.1
Ethernet Packet Generator
ExtMII 29E is the Ethernet Packet Generator register. Refer to datasheet for
configuration options.
A bad-CRC counter is in ExtMII 23.7:0. This counter will be saturate at 0xFF and is
cleared when read.
3.5.2
Far-End Loopback
When MII Register 23 bit 3 is set to 1, it forces incoming data from a link partner on
the media side to be retransmitted back to the link partner on the media interface.
3.5.3
Near-End Loopback
When MII Register 0 bit 14 is set to 1, the transmit data (TDP/TDN) on the MAC side is
looped back onto the receive data (RDP/RDN pins) to the MAC.
4
Additional Information
For any additional information or questions regarding the devices mentioned in this
document, contact your local sales representative.