Altera UG-01080 Betriebsanweisung Seite 108

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Chapter 5: 1G/10 Gbps Ethernet PHY IP Core 5–20
Editing a MIF File
November 2012 Altera CorporationAltera Transceiver PHY IP Core
User Guide
8. Generate a fractional PLL to create the 156.25 MHz XGMII clock from the 10G
reference clock.
9. Instantiate the PHY in your design to determine the required number of channels.
10. To complete the system, connect all the blocks.
Editing a MIF File
The MIF format contains all bit settings for the transceiver PMA and PCS. Because the
1G/10GbE PHY IP Core only requires PCS reconfiguration for a rate change, the PMA
settings should not change. Removing the PMA settings from the MIF file also
prevents an unintended overwrite of PMA parameters set through other assignments.
A few simple edits to the MIF file removes the PMA settings.
Complete the following steps to edit the MIF file:
1. Replace line 17 with
“13: 0001000000010110; -- PMA - RX changed to removed
CTLE”
.
2. Replace line 20 with
“16: 0010100000011001; -- PMA - RX continued”
.
3. Replace line 4 with “
4: 0001000000000000; -- PMA - TX
.
4. Remove lines 7-10. These lines contain the TX settings (VOD, post-tap, pre-tap).
5. Renumber the lines starting with the old line 11.
6. Change the depth at the top of the file from 168 to 164.
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