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Management Registers
R
.
Ethernet
or SGMII LogiCORE
mdc
IOB LOGIC |
| |||
IBUF |
|
| ||
|
| IPAD | mdc | |
O | ||||
I |
|
mdio_tri
mdio_out
mdio_in
IOB LOGIC
IOBUF
T
I IO
O
IOPAD mdio
Figure 9-4: Creating an External MDIO Interface
Management Registers
The contents of the Management Registers can be accessed using the REGAD field of the MDIO frame. Contents will vary depending on the CORE Generator options, and are defined in the following sections in this guide.
•
•
•SGMII Standard Using the Optional
•SGMII Standard without the Optional
•Both
1000BASE-X Standard Using the Optional Auto-Negotiation
More information on the
Table 9-2: MDIO Registers for 1000BASE-X with Auto-Negotiation
Register Address | Register Name |
|
|
0 | Control Register |
|
|
1 | Status Register |
|
|
Ethernet | www.xilinx.com | 119 |