
R
Chapter 9: Configuration and Status
Table 9-10: Auto-Negotiation Next Page Receive (Register 8) (Continued)
Bit(s) | Name |
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8.12 | Acknowledge 2 | 1 | = Comply with message | read only | 0 |
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| 0 | = Cannot comply with message |
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8.11 | Toggle | Value toggles between subsequent | read only | 0 | |
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8.10:0 | Message / | Message Code Field or Unformatted | read only | 00000000000 | |
| Unformatted | Page Encoding as dictated by 8.13 |
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| Code Field |
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Register 15: Extended Status
MDIO Register 15: Extended Status Register
15 | 14 | 13 | 12 | 11 | 0 | |
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Reg 15 |
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| RESERVED | ||||
| FULL DUPLEX | HALF DUPLEX | FULL DUPLEX | HALF DUPLEX |
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Table 9-11: Extended Status Register (Register 15)
Bit(s) | Name | Description | Attributes | Default Value |
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15.15 | Always returns a ‘1’ for this bit since | returns 1 | 1 | |
| Full Duplex |
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| supported |
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15.14 | Always returns a ‘0’ for this bit since | returns 0 | 0 | |
| Half Duplex |
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| supported |
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15.13 | Always returns a ‘0’ for this bit since | returns 0 | 0 | |
| Full Duplex |
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| supported |
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15.12 | Always returns a ‘0’ for this bit since | returns 0 | 0 | |
| Half Duplex |
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| supported |
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15:11:0 | Reserved | Always return 0s | returns 0s | 000000000000 |
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128 | www.xilinx.com | Ethernet |
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| UG155 March 24, 2008 |